LTC2358-18
Buffered Octal, 18-Bit, 200ksps/Ch Differential
?10.24V ADC with 30V Common Mode Range
P-P
FEATURES DESCRIPTION
?
n
Simultaneous Sampling of 8 Buffered Channels The LTC 2358-18 is an 18-bit, low noise 8-channel simul-
n
200ksps per Channel Throughput taneous sampling successive approximation register (SAR)
n
500pA/12nA Max Input Leakage at 85?C/125?C ADC with buffered differential, wide common mode range
n
?3.5LSB INL (Maximum, ?10.24V Range) picoamp inputs. Operating from a 5V low voltage supply,
n
Guaranteed 18-Bit, No Missing Codes flexible high voltage supplies, and using the internal refer-
TM
n
Differential, Wide Common Mode Range Inputs ence and buffer, each channel of this SoftSpan ADC can be
n
Per-Channel SoftSpan Input Ranges: independently configured on a conversion-by-conversion
n
?10.24V, 0V to 10.24V, ?5.12V, 0V to 5.12V basis to accept ?10.24V, 0V to 10.24V, ?5.12V, or 0V to
n
?12.5V, 0V to 12.5V, ?6.25V, 0V to 6.25V 5.12V signals. Individual channels may also be disabled
n
96.4dB Single-Conversion SNR (Typical) to increase throughput on the remaining channels.
n
?111dB THD (Typical) at f = 2kHz
IN
The integrated picoamp-input analog buffers, wide input
n
128dB CMRR (Typical) at f = 200Hz
IN
common mode range and 128dB CMRR of the LTC2358-18
n
Rail-to-Rail Input Overdrive Tolerance
allow the ADC to directly digitize a variety of signals us-
n
Integrated Reference and Buffer (4.096V)
ing minimal board space and power. This input signal
n
SPI CMOS (1.8V to 5V) and LVDS Serial I/O
flexibility, combined with ?3.5LSB INL, no missing codes
n
Internal Conversion Clock, No Cycle Latency
at 18 bits, and 96.4dB SNR, makes the LTC2358-18 an
n
219mW Power Dissipation (27mW/Ch Typical)
ideal choice for many high voltage applications requiring
n
48-Lead (7mm x 7mm) LQFP Package
wide dynamic range.
The LTC2358-18 supports pin-selectable SPI CMOS (1.8V
APPLICATIONS
to 5V) and LVDS serial interfaces. Between one and eight
lanes of data output may be employed in CMOS mode,
n
Programmable Logic Controllers
allowing the user to optimize bus width and throughput.
n
Industrial Process Control
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
n
Power Line Monitoring
SoftSpan is a trademark of Analog Devices Inc. All other trademarks are the property of their
respective owners. Protected by U.S. Patents, including 7705765, 7961132, 8319673, 9197235.
n
Test and Measurement
TYPICAL APPLICATION
15V 5V 1.8V TO 5V
0.1?F 0.1?F 2.2?F 0.1?F
Integral Nonlinearity vs
CMOS OR LVDS
Output Code and Channel
I/O INTERFACE vs Output Code and Channel
2.0
BUFFERS V V V OV
FULLY CC DD DDLBYP DD LVDS/CMOS
?10.24V RANGE
+
ARBITRARY DIFFERENTIAL
PD ?
IN0
S/H TRUE BIPOLAR DRIVE (IN = 0V)
1.5
?
+10V +5V
IN0
ALL CHANNELS
LTC2358-18
S/H
1.0
0V
0V
SDO0
S/H
?10V ?5V 0.5
S/H
18-BIT
MUX 0
SDO7
SAR ADC
TRUE BIPOLAR UNIPOLAR S/H
SCKO
+10V +10V
?0.5
SCKI
S/H
SDI
0V 0V
CS ?1.0
S/H
BUSY
?10V SAMPLE
?10V +
IN7
S/H CNV ?1.5
CLOCK
?
IN7
+ ?
V REFBUF REFIN GND
DIFFERENTIAL INPUTS IN /IN WITH EE
?2.0
WIDE INPUT COMMON MODE RANGE 235818 TA01a
?131072 ?65536 0 65536 131072
47?F 0.1?F
EIGHT BUFFERED
0.1?F
OUTPUT CODE
SIMULTANEOUS
235818 TA01b
SAMPLING CHANNELS ?15V
235818f
1
For more information www.linear.com/LTC2358-18
INL ERROR (LSB)
LTC2358-18
Buffered Octal, 18-Bit, 200ksps/Ch Differential
?10.24V ADC with 30V Common Mode Range
P-P
FEATURES DESCRIPTION
?
n
Simultaneous Sampling of 8 Buffered Channels The LTC 2358-18 is an 18-bit, low noise 8-channel simul-
n
200ksps per Channel Throughput taneous sampling successive approximation register (SAR)
n
500pA/12nA Max Input Leakage at 85?C/125?C ADC with buffered differential, wide common mode range
n
?3.5LSB INL (Maximum, ?10.24V Range) picoamp inputs. Operating from a 5V low voltage supply,
n
Guaranteed 18-Bit, No Missing Codes flexible high voltage supplies, and using the internal refer-
TM
n
Differential, Wide Common Mode Range Inputs ence and buffer, each channel of this SoftSpan ADC can be
n
Per-Channel SoftSpan Input Ranges: independently configured on a conversion-by-conversion
n
?10.24V, 0V to 10.24V, ?5.12V, 0V to 5.12V basis to accept ?10.24V, 0V to 10.24V, ?5.12V, or 0V to
n
?12.5V, 0V to 12.5V, ?6.25V, 0V to 6.25V 5.12V signals. Individual channels may also be disabled
n
96.4dB Single-Conversion SNR (Typical) to increase throughput on the remaining channels.
n
-111dB THD (Typical) at f = 2kHz
IN
The integrated picoamp-input analog buffers, wide input
n
128dB CMRR (Typical) at f = 200Hz
IN
common mode range and 128dB CMRR of the LTC2358-18
n
Rail-to-Rail Input Overdrive Tolerance
allow the ADC to directly digitize a variety of signals us-
n
Integrated Reference and Buffer (4.096V)
ing minimal board space and power. This input signal
n
SPI CMOS (1.8V to 5V) and LVDS Serial I/O
flexibility, combined with ?3.5LSB INL, no missing codes
n
Internal Conversion Clock, No Cycle Latency
at 18 bits, and 96.4dB SNR, makes the LTC2358-18 an
n
219mW Power Dissipation (27mW/Ch Typical)
ideal choice for many high voltage applications requiring
n
48-Lead (7mm x 7mm) LQFP Package
wide dynamic range.
The LTC2358-18 supports pin-selectable SPI CMOS (1.8V
APPLICATIONS
to 5V) and LVDS serial interfaces. Between one and eight
lanes of data output may be employed in CMOS mode,
n
Programmable Logic Controllers
allowing the user to optimize bus width and throughput.
n
Industrial Process Control
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
n
Power Line Monitoring
SoftSpan is a trademark of Analog Devices Inc. All other trademarks are the property of their
respective owners. Protected by U.S. Patents, including 7705765, 7961132, 8319673, 9197235.
n
Test and Measurement
TYPICAL APPLICATION
15V 5V 1.8V TO 5V
0.1?F 0.1?F 2.2?F 0.1?F
Integral Nonlinearity vs
CMOS OR LVDS
Output Code and Channel
I/O INTERFACE vs Output Code and Channel
2.0
BUFFERS V V V OV
FULLY CC DD DDLBYP DD LVDS/CMOS
?10.24V RANGE
+
ARBITRARY DIFFERENTIAL
PD ?
IN0
S/H TRUE BIPOLAR DRIVE (IN = 0V)
1.5
?
+10V +5V
IN0
ALL CHANNELS
LTC2358-18
S/H
1.0
0V
0V
SDO0
S/H
?10V ?5V 0.5
S/H
18-BIT
MUX 0
SDO7
SAR ADC
TRUE BIPOLAR UNIPOLAR S/H
SCKO
+10V +10V
?0.5
SCKI
S/H
SDI
0V 0V
CS ?1.0
S/H
BUSY
?10V SAMPLE
?10V +
IN7
S/H CNV ?1.5
CLOCK
?
IN7
+ ?
V REFBUF REFIN GND
DIFFERENTIAL INPUTS IN /IN WITH EE
?2.0
WIDE INPUT COMMON MODE RANGE 235818 TA01a
?131072 ?65536 0 65536 131072
47?F 0.1?F
EIGHT BUFFERED
0.1?F
OUTPUT CODE
SIMULTANEOUS
235818 TA01b
SAMPLING CHANNELS ?15V
235818f
1
For more information www.linear.com/LTC2358-18
INL ERROR (LSB)LTC2358-18
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION
(Notes 1, 2)
TOP VIEW
Supply Voltage (V ) .....................?0.3V to (V + 40V)
CC EE
Supply Voltage (V ) ................................ ?17.4V to 0.3V
EE
Supply Voltage Difference (V ? V ) ......................40V
CC EE
Supply Voltage (V ) ..................................................6V
DD
Supply Voltage (OV ) ................................................6V
DD
?
IN6 1 36 SDO7
Internal Regulated Supply Bypass (V ) ... (Note 3)
+ ?
DDLBYP
IN6 2 35 SDO /SDO6
? +
IN5 3 34 SDO /SDO5
Analog Input Voltage
+ ?
IN5 4 33 SCKO /SDO4
+ +
? +
IN0 to IN7 , IN4 5 32 SCKO /SCKO
+
IN4 6 31 OV
? ?
DD
?
IN0 to IN7 (Note 4) .........(V ? 0.3V) to (V + 0.3V)
EE CC IN3 7 30 GND
+ ?
IN3 8 29 SCKI /SCKI
REFIN .................................................... ?0.3V to 2.8V
? +
IN2 9 28 SCKI /SDO3
+ ?
IN2 10 27 SDI /SDO2
REFBUF, CNV (Note 5) ............. ?0.3V to (V + 0.3V)
DD
? +
IN1 11 26 SDI /SDO1
+
Digital Input Voltage (Note 5) ..... ?0.3V to (OV + 0.3V) IN1 12 25 SDO0
DD
Digital Output Voltage (Note 5) .. ?0.3V to (OV + 0.3V)
DD
Power Dissipation .............................................. 500mW
Operating Temperature Range
LTC2358C ................................................ 0?C to 70?C
LTC2358I .............................................?40?C to 85?C
LX PACKAGE
LTC2358H .......................................... ?40?C to 125?C
48-LEAD (7mm ? 7mm) PLASTIC LQFP
Storage Temperature Range .................. ?65?C to 150?C
T = 150?C, ? = 53?C/W
JMAX JA
http://www.linear.com/product/LTC2358-18#orderinfo
ORDER INFORMATION
TRAY PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2358CLX-18#PBF LTC2358LX-18 48-Lead (7mm ? 7mm) Plastic LQFP 0?C to 70?C
LTC2358ILX-18#PBF LTC2358LX-18 48-Lead (7mm ? 7mm) Plastic LQFP ?40?C to 85?C
LTC2358HLX-18#PBF LTC2358LX-18 48-Lead (7mm ? 7mm) Plastic LQFP ?40?C to 125?C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
235818f
2
For more information www.linear.com/LTC2358-18
+
?
48 IN7
IN0 13
?
+
47 IN7
IN0 14
46 GND
GND 15
45 V
V 16
CC EE
44 GND
V 17
EE
43 V
GND 18
DD
42 V
REFIN 19
DD
41 GND
GND 20
40 V
REFBUF 21
DDLBYP
39 CS
PD 22
38 BUSY
LVDS/CMOS 23
37 SDI
CNV 24
LTC2358-18
Buffered Octal, 18-Bit, 200ksps/Ch Differential
?10.24V ADC with 30V Common Mode Range
P-P
FEATURES DESCRIPTION
?
n
Simultaneous Sampling of 8 Buffered Channels The LTC 2358-18 is an 18-bit, low noise 8-channel simul-
n
200ksps per Channel Throughput taneous sampling successive approximation register (SAR)
n
500pA/12nA Max Input Leakage at 85?C/125?C ADC with buffered differential, wide common mode range
n
?3.5LSB INL (Maximum, ?10.24V Range) picoamp inputs. Operating from a 5V low voltage supply,
n
Guaranteed 18-Bit, No Missing Codes flexible high voltage supplies, and using the internal refer-
TM
n
Differential, Wide Common Mode Range Inputs ence and buffer, each channel of this SoftSpan ADC can be
n
Per-Channel SoftSpan Input Ranges: independently configured on a conversion-by-conversion
n
?10.24V, 0V to 10.24V, ?5.12V, 0V to 5.12V basis to accept ?10.24V, 0V to 10.24V, ?5.12V, or 0V to
n
?12.5V, 0V to 12.5V, ?6.25V, 0V to 6.25V 5.12V signals. Individual channels may also be disabled
n
96.4dB Single-Conversion SNR (Typical) to increase throughput on the remaining channels.
n
-111dB THD (Typical) at f = 2kHz
IN
The integrated picoamp-input analog buffers, wide input
n
128dB CMRR (Typical) at f = 200Hz
IN
common mode range and 128dB CMRR of the LTC2358-18
n
Rail-to-Rail Input Overdrive Tolerance
allow the ADC to directly digitize a variety of signals us-
n
Integrated Reference and Buffer (4.096V)
ing minimal board space and power. This input signal
n
SPI CMOS (1.8V to 5V) and LVDS Serial I/O
flexibility, combined with ?3.5LSB INL, no missing codes
n
Internal Conversion Clock, No Cycle Latency
at 18 bits, and 96.4dB SNR, makes the LTC2358-18 an
n
219mW Power Dissipation (27mW/Ch Typical)
ideal choice for many high voltage applications requiring
n
48-Lead (7mm x 7mm) LQFP Package
wide dynamic range.
The LTC2358-18 supports pin-selectable SPI CMOS (1.8V
APPLICATIONS
to 5V) and LVDS serial interfaces. Between one and eight
lanes of data output may be employed in CMOS mode,
n
Programmable Logic Controllers
allowing the user to optimize bus width and throughput.
n
Industrial Process Control
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
n
Power Line Monitoring
SoftSpan is a trademark of Analog Devices Inc. All other trademarks are the property of their
respective owners. Protected by U.S. Patents, including 7705765, 7961132, 8319673, 9197235.
n
Test and Measurement
TYPICAL APPLICATION
15V 5V 1.8V TO 5V
0.1?F 0.1?F 2.2?F 0.1?F
Integral Nonlinearity vs
CMOS OR LVDS
Output Code and Channel
I/O INTERFACE vs Output Code and Channel
2.0
BUFFERS V V V OV
FULLY CC DD DDLBYP DD LVDS/CMOS
?10.24V RANGE
+
ARBITRARY DIFFERENTIAL
PD ?
IN0
S/H TRUE BIPOLAR DRIVE (IN = 0V)
1.5
?
+10V +5V
IN0
ALL CHANNELS
LTC2358-18
S/H
1.0
0V
0V
SDO0
S/H
?10V ?5V 0.5
S/H
18-BIT
MUX 0
SDO7
SAR ADC
TRUE BIPOLAR UNIPOLAR S/H
SCKO
+10V +10V
?0.5
SCKI
S/H
SDI
0V 0V
CS ?1.0
S/H
BUSY
?10V SAMPLE
?10V +
IN7
S/H CNV ?1.5
CLOCK
?
IN7
+ ?
V REFBUF REFIN GND
DIFFERENTIAL INPUTS IN /IN WITH EE
?2.0
WIDE INPUT COMMON MODE RANGE 235818 TA01a
?131072 ?65536 0 65536 131072
47?F 0.1?F
EIGHT BUFFERED
0.1?F
OUTPUT CODE
SIMULTANEOUS
235818 TA01b
SAMPLING CHANNELS ?15V
235818f
1
For more information www.linear.com/LTC2358-18
INL ERROR (LSB)
LTC2358-18
Buffered Octal, 18-Bit, 200ksps/Ch Differential
?10.24V ADC with 30V Common Mode Range
P-P
FEATURES DESCRIPTION
?
n
Simultaneous Sampling of 8 Buffered Channels The LTC 2358-18 is an 18-bit, low noise 8-channel simul-
n
200ksps per Channel Throughput taneous sampling successive approximation register (SAR)
n
500pA/12nA Max Input Leakage at 85?C/125?C ADC with buffered differential, wide common mode range
n
?3.5LSB INL (Maximum, ?10.24V Range) picoamp inputs. Operating from a 5V low voltage supply,
n
Guaranteed 18-Bit, No Missing Codes flexible high voltage supplies, and using the internal refer-
TM
n
Differential, Wide Common Mode Range Inputs ence and buffer, each channel of this SoftSpan ADC can be
n
Per-Channel SoftSpan Input Ranges: independently configured on a conversion-by-conversion
n
?10.24V, 0V to 10.24V, ?5.12V, 0V to 5.12V basis to accept ?10.24V, 0V to 10.24V, ?5.12V, or 0V to
n
?12.5V, 0V to 12.5V, ?6.25V, 0V to 6.25V 5.12V signals. Individual channels may also be disabled
n
96.4dB Single-Conversion SNR (Typical) to increase throughput on the remaining channels.
n
-111dB THD (Typical) at f = 2kHz
IN
The integrated picoamp-input analog buffers, wide input
n
128dB CMRR (Typical) at f = 200Hz
IN
common mode range and 128dB CMRR of the LTC2358-18
n
Rail-to-Rail Input Overdrive Tolerance
allow the ADC to directly digitize a variety of signals us-
n
Integrated Reference and Buffer (4.096V)
ing minimal board space and power. This input signal
n
SPI CMOS (1.8V to 5V) and LVDS Serial I/O
flexibility, combined with ?3.5LSB INL, no missing codes
n
Internal Conversion Clock, No Cycle Latency
at 18 bits, and 96.4dB SNR, makes the LTC2358-18 an
n
219mW Power Dissipation (27mW/Ch Typical)
ideal choice for many high voltage applications requiring
n
48-Lead (7mm x 7mm) LQFP Package
wide dynamic range.
The LTC2358-18 supports pin-selectable SPI CMOS (1.8V
APPLICATIONS
to 5V) and LVDS serial interfaces. Between one and eight
lanes of data output may be employed in CMOS mode,
n
Programmable Logic Controllers
allowing the user to optimize bus width and throughput.
n
Industrial Process Control
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
n
Power Line Monitoring
SoftSpan is a trademark of Analog Devices Inc. All other trademarks are the property of their
respective owners. Protected by U.S. Patents, including 7705765, 7961132, 8319673, 9197235.
n
Test and Measurement
TYPICAL APPLICATION
15V 5V 1.8V TO 5V
0.1?F 0.1?F 2.2?F 0.1?F
Integral Nonlinearity vs
CMOS OR LVDS
Output Code and Channel
I/O INTERFACE vs Output Code and Channel
2.0
BUFFERS V V V OV
FULLY CC DD DDLBYP DD LVDS/CMOS
?10.24V RANGE
+
ARBITRARY DIFFERENTIAL
PD ?
IN0
S/H TRUE BIPOLAR DRIVE (IN = 0V)
1.5
?
+10V +5V
IN0
ALL CHANNELS
LTC2358-18
S/H
1.0
0V
0V
SDO0
S/H
?10V ?5V 0.5
S/H
18-BIT
MUX 0
SDO7
SAR ADC
TRUE BIPOLAR UNIPOLAR S/H
SCKO
+10V +10V
?0.5
SCKI
S/H
SDI
0V 0V
CS ?1.0
S/H
BUSY
?10V SAMPLE
?10V +
IN7
S/H CNV ?1.5
CLOCK
?
IN7
+ ?
V REFBUF REFIN GND
DIFFERENTIAL INPUTS IN /IN WITH EE
?2.0
WIDE INPUT COMMON MODE RANGE 235818 TA01a
?131072 ?65536 0 65536 131072
47?F 0.1?F
EIGHT BUFFERED
0.1?F
OUTPUT CODE
SIMULTANEOUS
235818 TA01b
SAMPLING CHANNELS ?15V
235818f
1
For more information www.linear.com/LTC2358-18
INL ERROR (LSB)LTC2358-18
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION
(Notes 1, 2)
TOP VIEW
Supply Voltage (V ) .....................?0.3V to (V + 40V)
CC EE
Supply Voltage (V ) ................................ ?17.4V to 0.3V
EE
Supply Voltage Difference (V ? V ) ......................40V
CC EE
Supply Voltage (V ) ..................................................6V
DD
Supply Voltage (OV ) ................................................6V
DD
?
IN6 1 36 SDO7
Internal Regulated Supply Bypass (V ) ... (Note 3)
+ ?
DDLBYP
IN6 2 35 SDO /SDO6
? +
IN5 3 34 SDO /SDO5
Analog Input Voltage
+ ?
IN5 4 33 SCKO /SDO4
+ +
? +
IN0 to IN7 , IN4 5 32 SCKO /SCKO
+
IN4 6 31 OV
? ?
DD
?
IN0 to IN7 (Note 4) .........(V ? 0.3V) to (V + 0.3V)
EE CC IN3 7 30 GND
+ ?
IN3 8 29 SCKI /SCKI
REFIN .................................................... ?0.3V to 2.8V
? +
IN2 9 28 SCKI /SDO3
+ ?
IN2 10 27 SDI /SDO2
REFBUF, CNV (Note 5) ............. ?0.3V to (V + 0.3V)
DD
? +
IN1 11 26 SDI /SDO1
+
Digital Input Voltage (Note 5) ..... ?0.3V to (OV + 0.3V) IN1 12 25 SDO0
DD
Digital Output Voltage (Note 5) .. ?0.3V to (OV + 0.3V)
DD
Power Dissipation .............................................. 500mW
Operating Temperature Range
LTC2358C ................................................ 0?C to 70?C
LTC2358I .............................................?40?C to 85?C
LX PACKAGE
LTC2358H .......................................... ?40?C to 125?C
48-LEAD (7mm ? 7mm) PLASTIC LQFP
Storage Temperature Range .................. ?65?C to 150?C
T = 150?C, ? = 53?C/W
JMAX JA
http://www.linear.com/product/LTC2358-18#orderinfo
ORDER INFORMATION
TRAY PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2358CLX-18#PBF LTC2358LX-18 48-Lead (7mm ? 7mm) Plastic LQFP 0?C to 70?C
LTC2358ILX-18#PBF LTC2358LX-18 48-Lead (7mm ? 7mm) Plastic LQFP ?40?C to 85?C
LTC2358HLX-18#PBF LTC2358LX-18 48-Lead (7mm ? 7mm) Plastic LQFP ?40?C to 125?C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
235818f
2
For more information www.linear.com/LTC2358-18
+
?
48 IN7
IN0 13
?
+
47 IN7
IN0 14
46 GND
GND 15
45 V
V 16
CC EE
44 GND
V 17
EE
43 V
GND 18
DD
42 V
REFIN 19
DD
41 GND
GND 20
40 V
REFBUF 21
DDLBYP
39 CS
PD 22
38 BUSY
LVDS/CMOS 23
37 SDI
CNV 24LTC2358-18
ELECTRICAL CHARACTERISTICSThe l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T = 25?C. (Note 6)
A
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
l
V + Absolute Input Range (Note 7) V + 4 V ? 4 V
IN EE CC
+ +
(IN0 to IN7 )
V ? Absolute Input Range (Note 7) l V + 4 V ? 4 V
IN EE CC
? ?
(IN0 to IN7 )
l
V + ? V ? Input Differential Voltage SoftSpan 7: ?2.5 ? V Range (Note 7) ?2.5 ? V 2.5 ? V V
IN IN REFBUF REFBUF REFBUF
l
Range SoftSpan 6: ?2.5 ? V /1.024 Range (Note 7) ?2.5 ? V /1.024 2.5 ? V /1.024 V
REFBUF REFBUF REFBUF
l
SoftSpan 5: 0V to 2.5 ? V Range (Note 7) 0 2.5 ? V V
REFBUF REFBUF
l
SoftSpan 4: 0V to 2.5 ? V /1.024 Range (Note 7) 0 2.5 ? V /1.024 V
REFBUF REFBUF
l
SoftSpan 3: ?1.25 ? V Range (Note 7) ?1.25 ? V 1.25 ? V V
REFBUF REFBUF REFBUF
l
SoftSpan 2: ?1.25 ? V /1.024 Range (Note 7) ?1.25 ? V /1.024 1.25 ? V /1.024 V
REFBUF REFBUF REFBUF
l
SoftSpan 1: 0V to 1.25 ? V Range (Note 7) 0 1.25 ? V V
REFBUF REFBUF
V Input Common Mode Voltage (Note 7) l V + 4 V ? 4 V
CM EE CC
Range
V + ? V ? Input Differential Overdrive (Note 8) l ?(V ? V ) (V ? V ) V
IN IN CC EE CC EE
Tolerance
l
I Input Overdrive V + > V , V ? > V (Note 8) 10 mA
OVERDRIVE IN CC IN CC
l
Current Tolerance V + < V , V ? < V (Note 8) 0 mA
IN EE IN EE
I Analog Input Leakage Current 5 pA
IN
C-Grade and I-Grade l 500 pA
H-Grade l 12 nA
R Analog Input Resistance For Each Pin >1000 G?
IN
C Analog Input Capacitance 3 pF
IN
l
CMRR Input Common Mode V + = V ? = 18V 200Hz Sine 100 128 dB
IN IN P-P
Rejection Ratio
V CNV High Level Input Voltage l 1.3 V
IHCNV
l
V CNV Low Level Input Voltage 0.5 V
ILCNV
I CNV Input Current V = 0V to V l ?10 10 ?A
INCNV IN DD
CONVERTER CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T = 25?C. (Note 9)
A
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
l
Resolution 18 Bits
No Missing Codes l 18 Bits
Transition Noise SoftSpans 7 and 6: ?10.24V and ?10V Ranges 1.4 LSB
RMS
SoftSpans 5 and 4: 0V to 10.24V and 0V to 10V Ranges 2.8 LSB
RMS
SoftSpans 3 and 2: ?5.12V and ?5V Ranges 2.1 LSB
RMS
SoftSpan 1: 0V to 5.12V Range 4.2 LSB
RMS
l
INL Integral Linearity Error SoftSpans 7 and 6: ?10.24V and ?10V Ranges (Note 10) ?3.5 ?1 3.5 LSB
l
SoftSpans 5 and 4: 0V to 10.24V and 0V to 10V Ranges (Note 10) ?4 ?1.5 4 LSB
l
SoftSpans 3 and 2: ?5.12V and ?5V Ranges (Note 10) ?4 ?0.75 4 LSB
l
SoftSpan 1: 0V to 5.12V Range (Note 10) ?6 ?0.75 6 LSB
DNL Differential Linearity Error (Note 11) l ?0.9 ?0.2 0.9 LSB
l
ZSE Zero-Scale Error (Note 12) ?700 ?160 700 ?V
Zero-Scale Error Drift ?4 ?V/?C
l
FSE Full-Scale Error V = 4.096V (REFBUF Overdriven) (Note 12) ?0.1 ?0.025 0.1 %FS
REFBUF
Full-Scale Error Drift V = 4.096V (REFBUF Overdriven) (Note 12) ?2.5 ppm/?C
REFBUF
235818f
3
For more information www.linear.com/LTC2358-18
LTC2358-18
Buffered Octal, 18-Bit, 200ksps/Ch Differential
?10.24V ADC with 30V Common Mode Range
P-P
FEATURES DESCRIPTION
?
n
Simultaneous Sampling of 8 Buffered Channels The LTC 2358-18 is an 18-bit, low noise 8-channel simul-
n
200ksps per Channel Throughput taneous sampling successive approximation register (SAR)
n
500pA/12nA Max Input Leakage at 85?C/125?C ADC with buffered differential, wide common mode range
n
?3.5LSB INL (Maximum, ?10.24V Range) picoamp inputs. Operating from a 5V low voltage supply,
n
Guaranteed 18-Bit, No Missing Codes flexible high voltage supplies, and using the internal refer-
TM
n
Differential, Wide Common Mode Range Inputs ence and buffer, each channel of this SoftSpan ADC can be
n
Per-Channel SoftSpan Input Ranges: independently configured on a conversion-by-conversion
n
?10.24V, 0V to 10.24V, ?5.12V, 0V to 5.12V basis to accept ?10.24V, 0V to 10.24V, ?5.12V, or 0V to
n
?12.5V, 0V to 12.5V, ?6.25V, 0V to 6.25V 5.12V signals. Individual channels may also be disabled
n
96.4dB Single-Conversion SNR (Typical) to increase throughput on the remaining channels.
n
-111dB THD (Typical) at f = 2kHz
IN
The integrated picoamp-input analog buffers, wide input
n
128dB CMRR (Typical) at f = 200Hz
IN
common mode range and 128dB CMRR of the LTC2358-18
n
Rail-to-Rail Input Overdrive Tolerance
allow the ADC to directly digitize a variety of signals us-
n
Integrated Reference and Buffer (4.096V)
ing minimal board space and power. This input signal
n
SPI CMOS (1.8V to 5V) and LVDS Serial I/O
flexibility, combined with ?3.5LSB INL, no missing codes
n
Internal Conversion Clock, No Cycle Latency
at 18 bits, and 96.4dB SNR, makes the LTC2358-18 an
n
219mW Power Dissipation (27mW/Ch Typical)
ideal choice for many high voltage applications requiring
n
48-Lead (7mm x 7mm) LQFP Package
wide dynamic range.
The LTC2358-18 supports pin-selectable SPI CMOS (1.8V
APPLICATIONS
to 5V) and LVDS serial interfaces. Between one and eight
lanes of data output may be employed in CMOS mode,
n
Programmable Logic Controllers
allowing the user to optimize bus width and throughput.
n
Industrial Process Control
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
n
Power Line Monitoring
SoftSpan is a trademark of Analog Devices Inc. All other trademarks are the property of their
respective owners. Protected by U.S. Patents, including 7705765, 7961132, 8319673, 9197235.
n
Test and Measurement
TYPICAL APPLICATION
15V 5V 1.8V TO 5V
0.1?F 0.1?F 2.2?F 0.1?F
Integral Nonlinearity vs
CMOS OR LVDS
Output Code and Channel
I/O INTERFACE vs Output Code and Channel
2.0
BUFFERS V V V OV
FULLY CC DD DDLBYP DD LVDS/CMOS
?10.24V RANGE
+
ARBITRARY DIFFERENTIAL
PD ?
IN0
S/H TRUE BIPOLAR DRIVE (IN = 0V)
1.5
?
+10V +5V
IN0
ALL CHANNELS
LTC2358-18
S/H
1.0
0V
0V
SDO0
S/H
?10V ?5V 0.5
S/H
18-BIT
MUX 0
SDO7
SAR ADC
TRUE BIPOLAR UNIPOLAR S/H
SCKO
+10V +10V
?0.5
SCKI
S/H
SDI
0V 0V
CS ?1.0
S/H
BUSY
?10V SAMPLE
?10V +
IN7
S/H CNV ?1.5
CLOCK
?
IN7
+ ?
V REFBUF REFIN GND
DIFFERENTIAL INPUTS IN /IN WITH EE
?2.0
WIDE INPUT COMMON MODE RANGE 235818 TA01a
?131072 ?65536 0 65536 131072
47?F 0.1?F
EIGHT BUFFERED
0.1?F
OUTPUT CODE
SIMULTANEOUS
235818 TA01b
SAMPLING CHANNELS ?15V
235818f
1
For more information www.linear.com/LTC2358-18
INL ERROR (LSB)
LTC2358-18
Buffered Octal, 18-Bit, 200ksps/Ch Differential
?10.24V ADC with 30V Common Mode Range
P-P
FEATURES DESCRIPTION
?
n
Simultaneous Sampling of 8 Buffered Channels The LTC 2358-18 is an 18-bit, low noise 8-channel simul-
n
200ksps per Channel Throughput taneous sampling successive approximation register (SAR)
n
500pA/12nA Max Input Leakage at 85?C/125?C ADC with buffered differential, wide common mode range
n
?3.5LSB INL (Maximum, ?10.24V Range) picoamp inputs. Operating from a 5V low voltage supply,
n
Guaranteed 18-Bit, No Missing Codes flexible high voltage supplies, and using the internal refer-
TM
n
Differential, Wide Common Mode Range Inputs ence and buffer, each channel of this SoftSpan ADC can be
n
Per-Channel SoftSpan Input Ranges: independently configured on a conversion-by-conversion
n
?10.24V, 0V to 10.24V, ?5.12V, 0V to 5.12V basis to accept ?10.24V, 0V to 10.24V, ?5.12V, or 0V to
n
?12.5V, 0V to 12.5V, ?6.25V, 0V to 6.25V 5.12V signals. Individual channels may also be disabled
n
96.4dB Single-Conversion SNR (Typical) to increase throughput on the remaining channels.
n
-111dB THD (Typical) at f = 2kHz
IN
The integrated picoamp-input analog buffers, wide input
n
128dB CMRR (Typical) at f = 200Hz
IN
common mode range and 128dB CMRR of the LTC2358-18
n
Rail-to-Rail Input Overdrive Tolerance
allow the ADC to directly digitize a variety of signals us-
n
Integrated Reference and Buffer (4.096V)
ing minimal board space and power. This input signal
n
SPI CMOS (1.8V to 5V) and LVDS Serial I/O
flexibility, combined with ?3.5LSB INL, no missing codes
n
Internal Conversion Clock, No Cycle Latency
at 18 bits, and 96.4dB SNR, makes the LTC2358-18 an
n
219mW Power Dissipation (27mW/Ch Typical)
ideal choice for many high voltage applications requiring
n
48-Lead (7mm x 7mm) LQFP Package
wide dynamic range.
The LTC2358-18 supports pin-selectable SPI CMOS (1.8V
APPLICATIONS
to 5V) and LVDS serial interfaces. Between one and eight
lanes of data output may be employed in CMOS mode,
n
Programmable Logic Controllers
allowing the user to optimize bus width and throughput.
n
Industrial Process Control
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
n
Power Line Monitoring
SoftSpan is a trademark of Analog Devices Inc. All other trademarks are the property of their
respective owners. Protected by U.S. Patents, including 7705765, 7961132, 8319673, 9197235.
n
Test and Measurement
TYPICAL APPLICATION
15V 5V 1.8V TO 5V
0.1?F 0.1?F 2.2?F 0.1?F
Integral Nonlinearity vs
CMOS OR LVDS
Output Code and Channel
I/O INTERFACE vs Output Code and Channel
2.0
BUFFERS V V V OV
FULLY CC DD DDLBYP DD LVDS/CMOS
?10.24V RANGE
+
ARBITRARY DIFFERENTIAL
PD ?
IN0
S/H TRUE BIPOLAR DRIVE (IN = 0V)
1.5
?
+10V +5V
IN0
ALL CHANNELS
LTC2358-18
S/H
1.0
0V
0V
SDO0
S/H
?10V ?5V 0.5
S/H
18-BIT
MUX 0
SDO7
SAR ADC
TRUE BIPOLAR UNIPOLAR S/H
SCKO
+10V +10V
?0.5
SCKI
S/H
SDI
0V 0V
CS ?1.0
S/H
BUSY
?10V SAMPLE
?10V +
IN7
S/H CNV ?1.5
CLOCK
?
IN7
+ ?
V REFBUF REFIN GND
DIFFERENTIAL INPUTS IN /IN WITH EE
?2.0
WIDE INPUT COMMON MODE RANGE 235818 TA01a
?131072 ?65536 0 65536 131072
47?F 0.1?F
EIGHT BUFFERED
0.1?F
OUTPUT CODE
SIMULTANEOUS
235818 TA01b
SAMPLING CHANNELS ?15V
235818f
1
For more information www.linear.com/LTC2358-18
INL ERROR (LSB)LTC2358-18
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION
(Notes 1, 2)
TOP VIEW
Supply Voltage (V ) .....................?0.3V to (V + 40V)
CC EE
Supply Voltage (V ) ................................ ?17.4V to 0.3V
EE
Supply Voltage Difference (V ? V ) ......................40V
CC EE
Supply Voltage (V ) ..................................................6V
DD
Supply Voltage (OV ) ................................................6V
DD
?
IN6 1 36 SDO7
Internal Regulated Supply Bypass (V ) ... (Note 3)
+ ?
DDLBYP
IN6 2 35 SDO /SDO6
? +
IN5 3 34 SDO /SDO5
Analog Input Voltage
+ ?
IN5 4 33 SCKO /SDO4
+ +
? +
IN0 to IN7 , IN4 5 32 SCKO /SCKO
+
IN4 6 31 OV
? ?
DD
?
IN0 to IN7 (Note 4) .........(V ? 0.3V) to (V + 0.3V)
EE CC IN3 7 30 GND
+ ?
IN3 8 29 SCKI /SCKI
REFIN .................................................... ?0.3V to 2.8V
? +
IN2 9 28 SCKI /SDO3
+ ?
IN2 10 27 SDI /SDO2
REFBUF, CNV (Note 5) ............. ?0.3V to (V + 0.3V)
DD
? +
IN1 11 26 SDI /SDO1
+
Digital Input Voltage (Note 5) ..... ?0.3V to (OV + 0.3V) IN1 12 25 SDO0
DD
Digital Output Voltage (Note 5) .. ?0.3V to (OV + 0.3V)
DD
Power Dissipation .............................................. 500mW
Operating Temperature Range
LTC2358C ................................................ 0?C to 70?C
LTC2358I .............................................?40?C to 85?C
LX PACKAGE
LTC2358H .......................................... ?40?C to 125?C
48-LEAD (7mm ? 7mm) PLASTIC LQFP
Storage Temperature Range .................. ?65?C to 150?C
T = 150?C, ? = 53?C/W
JMAX JA
http://www.linear.com/product/LTC2358-18#orderinfo
ORDER INFORMATION
TRAY PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2358CLX-18#PBF LTC2358LX-18 48-Lead (7mm ? 7mm) Plastic LQFP 0?C to 70?C
LTC2358ILX-18#PBF LTC2358LX-18 48-Lead (7mm ? 7mm) Plastic LQFP ?40?C to 85?C
LTC2358HLX-18#PBF LTC2358LX-18 48-Lead (7mm ? 7mm) Plastic LQFP ?40?C to 125?C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
235818f
2
For more information www.linear.com/LTC2358-18
+
?
48 IN7
IN0 13
?
+
47 IN7
IN0 14
46 GND
GND 15
45 V
V 16
CC EE
44 GND
V 17
EE
43 V
GND 18
DD
42 V
REFIN 19
DD
41 GND
GND 20
40 V
REFBUF 21
DDLBYP
39 CS
PD 22
38 BUSY
LVDS/CMOS 23
37 SDI
CNV 24
LTC2358-18
Buffered Octal, 18-Bit, 200ksps/Ch Differential
?10.24V ADC with 30V Common Mode Range
P-P
FEATURES DESCRIPTION
?
n
Simultaneous Sampling of 8 Buffered Channels The LTC 2358-18 is an 18-bit, low noise 8-channel simul-
n
200ksps per Channel Throughput taneous sampling successive approximation register (SAR)
n
500pA/12nA Max Input Leakage at 85?C/125?C ADC with buffered differential, wide common mode range
n
?3.5LSB INL (Maximum, ?10.24V Range) picoamp inputs. Operating from a 5V low voltage supply,
n
Guaranteed 18-Bit, No Missing Codes flexible high voltage supplies, and using the internal refer-
TM
n
Differential, Wide Common Mode Range Inputs ence and buffer, each channel of this SoftSpan ADC can be
n
Per-Channel SoftSpan Input Ranges: independently configured on a conversion-by-conversion
n
?10.24V, 0V to 10.24V, ?5.12V, 0V to 5.12V basis to accept ?10.24V, 0V to 10.24V, ?5.12V, or 0V to
n
?12.5V, 0V to 12.5V, ?6.25V, 0V to 6.25V 5.12V signals. Individual channels may also be disabled
n
96.4dB Single-Conversion SNR (Typical) to increase throughput on the remaining channels.
n
-111dB THD (Typical) at f = 2kHz
IN
The integrated picoamp-input analog buffers, wide input
n
128dB CMRR (Typical) at f = 200Hz
IN
common mode range and 128dB CMRR of the LTC2358-18
n
Rail-to-Rail Input Overdrive Tolerance
allow the ADC to directly digitize a variety of signals us-
n
Integrated Reference and Buffer (4.096V)
ing minimal board space and power. This input signal
n
SPI CMOS (1.8V to 5V) and LVDS Serial I/O
flexibility, combined with ?3.5LSB INL, no missing codes
n
Internal Conversion Clock, No Cycle Latency
at 18 bits, and 96.4dB SNR, makes the LTC2358-18 an
n
219mW Power Dissipation (27mW/Ch Typical)
ideal choice for many high voltage applications requiring
n
48-Lead (7mm x 7mm) LQFP Package
wide dynamic range.
The LTC2358-18 supports pin-selectable SPI CMOS (1.8V
APPLICATIONS
to 5V) and LVDS serial interfaces. Between one and eight
lanes of data output may be employed in CMOS mode,
n
Programmable Logic Controllers
allowing the user to optimize bus width and throughput.
n
Industrial Process Control
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
n
Power Line Monitoring
SoftSpan is a trademark of Analog Devices Inc. All other trademarks are the property of their
respective owners. Protected by U.S. Patents, including 7705765, 7961132, 8319673, 9197235.
n
Test and Measurement
TYPICAL APPLICATION
15V 5V 1.8V TO 5V
0.1?F 0.1?F 2.2?F 0.1?F
Integral Nonlinearity vs
CMOS OR LVDS
Output Code and Channel
I/O INTERFACE vs Output Code and Channel
2.0
BUFFERS V V V OV
FULLY CC DD DDLBYP DD LVDS/CMOS
?10.24V RANGE
+
ARBITRARY DIFFERENTIAL
PD ?
IN0
S/H TRUE BIPOLAR DRIVE (IN = 0V)
1.5
?
+10V +5V
IN0
ALL CHANNELS
LTC2358-18
S/H
1.0
0V
0V
SDO0
S/H
?10V ?5V 0.5
S/H
18-BIT
MUX 0
SDO7
SAR ADC
TRUE BIPOLAR UNIPOLAR S/H
SCKO
+10V +10V
?0.5
SCKI
S/H
SDI
0V 0V
CS ?1.0
S/H
BUSY
?10V SAMPLE
?10V +
IN7
S/H CNV ?1.5
CLOCK
?
IN7
+ ?
V REFBUF REFIN GND
DIFFERENTIAL INPUTS IN /IN WITH EE
?2.0
WIDE INPUT COMMON MODE RANGE 235818 TA01a
?131072 ?65536 0 65536 131072
47?F 0.1?F
EIGHT BUFFERED
0.1?F
OUTPUT CODE
SIMULTANEOUS
235818 TA01b
SAMPLING CHANNELS ?15V
235818f
1
For more information www.linear.com/LTC2358-18
INL ERROR (LSB)
LTC2358-18
Buffered Octal, 18-Bit, 200ksps/Ch Differential
?10.24V ADC with 30V Common Mode Range
P-P
FEATURES DESCRIPTION
?
n
Simultaneous Sampling of 8 Buffered Channels The LTC 2358-18 is an 18-bit, low noise 8-channel simul-
n
200ksps per Channel Throughput taneous sampling successive approximation register (SAR)
n
500pA/12nA Max Input Leakage at 85?C/125?C ADC with buffered differential, wide common mode range
n
?3.5LSB INL (Maximum, ?10.24V Range) picoamp inputs. Operating from a 5V low voltage supply,
n
Guaranteed 18-Bit, No Missing Codes flexible high voltage supplies, and using the internal refer-
TM
n
Differential, Wide Common Mode Range Inputs ence and buffer, each channel of this SoftSpan ADC can be
n
Per-Channel SoftSpan Input Ranges: independently configured on a conversion-by-conversion
n
?10.24V, 0V to 10.24V, ?5.12V, 0V to 5.12V basis to accept ?10.24V, 0V to 10.24V, ?5.12V, or 0V to
n
?12.5V, 0V to 12.5V, ?6.25V, 0V to 6.25V 5.12V signals. Individual channels may also be disabled
n
96.4dB Single-Conversion SNR (Typical) to increase throughput on the remaining channels.
n
-111dB THD (Typical) at f = 2kHz
IN
The integrated picoamp-input analog buffers, wide input
n
128dB CMRR (Typical) at f = 200Hz
IN
common mode range and 128dB CMRR of the LTC2358-18
n
Rail-to-Rail Input Overdrive Tolerance
allow the ADC to directly digitize a variety of signals us-
n
Integrated Reference and Buffer (4.096V)
ing minimal board space and power. This input signal
n
SPI CMOS (1.8V to 5V) and LVDS Serial I/O
flexibility, combined with ?3.5LSB INL, no missing codes
n
Internal Conversion Clock, No Cycle Latency
at 18 bits, and 96.4dB SNR, makes the LTC2358-18 an
n
219mW Power Dissipation (27mW/Ch Typical)
ideal choice for many high voltage applications requiring
n
48-Lead (7mm x 7mm) LQFP Package
wide dynamic range.
The LTC2358-18 supports pin-selectable SPI CMOS (1.8V
APPLICATIONS
to 5V) and LVDS serial interfaces. Between one and eight
lanes of data output may be employed in CMOS mode,
n
Programmable Logic Controllers
allowing the user to optimize bus width and throughput.
n
Industrial Process Control
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
n
Power Line Monitoring
SoftSpan is a trademark of Analog Devices Inc. All other trademarks are the property of their
respective owners. Protected by U.S. Patents, including 7705765, 7961132, 8319673, 9197235.
n
Test and Measurement
TYPICAL APPLICATION
15V 5V 1.8V TO 5V
0.1?F 0.1?F 2.2?F 0.1?F
Integral Nonlinearity vs
CMOS OR LVDS
Output Code and Channel
I/O INTERFACE vs Output Code and Channel
2.0
BUFFERS V V V OV
FULLY CC DD DDLBYP DD LVDS/CMOS
?10.24V RANGE
+
ARBITRARY DIFFERENTIAL
PD ?
IN0
S/H TRUE BIPOLAR DRIVE (IN = 0V)
1.5
?
+10V +5V
IN0
ALL CHANNELS
LTC2358-18
S/H
1.0
0V
0V
SDO0
S/H
?10V ?5V 0.5
S/H
18-BIT
MUX 0
SDO7
SAR ADC
TRUE BIPOLAR UNIPOLAR S/H
SCKO
+10V +10V
?0.5
SCKI
S/H
SDI
0V 0V
CS ?1.0
S/H
BUSY
?10V SAMPLE
?10V +
IN7
S/H CNV ?1.5
CLOCK
?
IN7
+ ?
V REFBUF REFIN GND
DIFFERENTIAL INPUTS IN /IN WITH EE
?2.0
WIDE INPUT COMMON MODE RANGE 235818 TA01a
?131072 ?65536 0 65536 131072
47?F 0.1?F
EIGHT BUFFERED
0.1?F
OUTPUT CODE
SIMULTANEOUS
235818 TA01b
SAMPLING CHANNELS ?15V
235818f
1
For more information www.linear.com/LTC2358-18
INL ERROR (LSB)LTC2358-18
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION
(Notes 1, 2)
TOP VIEW
Supply Voltage (V ) .....................?0.3V to (V + 40V)
CC EE
Supply Voltage (V ) ................................ ?17.4V to 0.3V
EE
Supply Voltage Difference (V ? V ) ......................40V
CC EE
Supply Voltage (V ) ..................................................6V
DD
Supply Voltage (OV ) ................................................6V
DD
?
IN6 1 36 SDO7
Internal Regulated Supply Bypass (V ) ... (Note 3)
+ ?
DDLBYP
IN6 2 35 SDO /SDO6
? +
IN5 3 34 SDO /SDO5
Analog Input Voltage
+ ?
IN5 4 33 SCKO /SDO4
+ +
? +
IN0 to IN7 , IN4 5 32 SCKO /SCKO
+
IN4 6 31 OV
? ?
DD
?
IN0 to IN7 (Note 4) .........(V ? 0.3V) to (V + 0.3V)
EE CC IN3 7 30 GND
+ ?
IN3 8 29 SCKI /SCKI
REFIN .................................................... ?0.3V to 2.8V
? +
IN2 9 28 SCKI /SDO3
+ ?
IN2 10 27 SDI /SDO2
REFBUF, CNV (Note 5) ............. ?0.3V to (V + 0.3V)
DD
? +
IN1 11 26 SDI /SDO1
+
Digital Input Voltage (Note 5) ..... ?0.3V to (OV + 0.3V) IN1 12 25 SDO0
DD
Digital Output Voltage (Note 5) .. ?0.3V to (OV + 0.3V)
DD
Power Dissipation .............................................. 500mW
Operating Temperature Range
LTC2358C ................................................ 0?C to 70?C
LTC2358I .............................................?40?C to 85?C
LX PACKAGE
LTC2358H .......................................... ?40?C to 125?C
48-LEAD (7mm ? 7mm) PLASTIC LQFP
Storage Temperature Range .................. ?65?C to 150?C
T = 150?C, ? = 53?C/W
JMAX JA
http://www.linear.com/product/LTC2358-18#orderinfo
ORDER INFORMATION
TRAY PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2358CLX-18#PBF LTC2358LX-18 48-Lead (7mm ? 7mm) Plastic LQFP 0?C to 70?C
LTC2358ILX-18#PBF LTC2358LX-18 48-Lead (7mm ? 7mm) Plastic LQFP ?40?C to 85?C
LTC2358HLX-18#PBF LTC2358LX-18 48-Lead (7mm ? 7mm) Plastic LQFP ?40?C to 125?C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
235818f
2
For more information www.linear.com/LTC2358-18
+
?
48 IN7
IN0 13
?
+
47 IN7
IN0 14
46 GND
GND 15
45 V
V 16
CC EE
44 GND
V 17
EE
43 V
GND 18
DD
42 V
REFIN 19
DD
41 GND
GND 20
40 V
REFBUF 21
DDLBYP
39 CS
PD 22
38 BUSY
LVDS/CMOS 23
37 SDI
CNV 24LTC2358-18
ELECTRICAL CHARACTERISTICSThe l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T = 25?C. (Note 6)
A
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
l
V + Absolute Input Range (Note 7) V + 4 V ? 4 V
IN EE CC
+ +
(IN0 to IN7 )
V ? Absolute Input Range (Note 7) l V + 4 V ? 4 V
IN EE CC
? ?
(IN0 to IN7 )
l
V + ? V ? Input Differential Voltage SoftSpan 7: ?2.5 ? V Range (Note 7) ?2.5 ? V 2.5 ? V V
IN IN REFBUF REFBUF REFBUF
l
Range SoftSpan 6: ?2.5 ? V /1.024 Range (Note 7) ?2.5 ? V /1.024 2.5 ? V /1.024 V
REFBUF REFBUF REFBUF
l
SoftSpan 5: 0V to 2.5 ? V Range (Note 7) 0 2.5 ? V V
REFBUF REFBUF
l
SoftSpan 4: 0V to 2.5 ? V /1.024 Range (Note 7) 0 2.5 ? V /1.024 V
REFBUF REFBUF
l
SoftSpan 3: ?1.25 ? V Range (Note 7) ?1.25 ? V 1.25 ? V V
REFBUF REFBUF REFBUF
l
SoftSpan 2: ?1.25 ? V /1.024 Range (Note 7) ?1.25 ? V /1.024 1.25 ? V /1.024 V
REFBUF REFBUF REFBUF
l
SoftSpan 1: 0V to 1.25 ? V Range (Note 7) 0 1.25 ? V V
REFBUF REFBUF
V Input Common Mode Voltage (Note 7) l V + 4 V ? 4 V
CM EE CC
Range
V + ? V ? Input Differential Overdrive (Note 8) l -(V - V ) (V - V ) V
IN IN CC EE CC EE
Tolerance
l
I Input Overdrive V + > V , V ? > V (Note 8) 10 mA
OVERDRIVE IN CC IN CC
l
Current Tolerance V + < V , V ? < V (Note 8) 0 mA
IN EE IN EE
I Analog Input Leakage Current 5 pA
IN
C-Grade and I-Grade l 500 pA
H-Grade l 12 nA
R Analog Input Resistance For Each Pin >1000 GO
IN
C Analog Input Capacitance 3 pF
IN
l
CMRR Input Common Mode V + = V - = 18V 200Hz Sine 100 128 dB
IN IN P-P
Rejection Ratio
V CNV High Level Input Voltage l 1.3 V
IHCNV
l
V CNV Low Level Input Voltage 0.5 V
ILCNV
I CNV Input Current V = 0V to V l ?10 10 ?A
INCNV IN DD
CONVERTER CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T = 25?C. (Note 9)
A
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
l
Resolution 18 Bits
No Missing Codes l 18 Bits
Transition Noise SoftSpans 7 and 6: ?10.24V and ?10V Ranges 1.4 LSB
RMS
SoftSpans 5 and 4: 0V to 10.24V and 0V to 10V Ranges 2.8 LSB
RMS
SoftSpans 3 and 2: ?5.12V and ?5V Ranges 2.1 LSB
RMS
SoftSpan 1: 0V to 5.12V Range 4.2 LSB
RMS
l
INL Integral Linearity Error SoftSpans 7 and 6: ?10.24V and ?10V Ranges (Note 10) ?3.5 ?1 3.5 LSB
l
SoftSpans 5 and 4: 0V to 10.24V and 0V to 10V Ranges (Note 10) ?4 ?1.5 4 LSB
l
SoftSpans 3 and 2: ?5.12V and ?5V Ranges (Note 10) ?4 ?0.75 4 LSB
l
SoftSpan 1: 0V to 5.12V Range (Note 10) ?6 ?0.75 6 LSB
DNL Differential Linearity Error (Note 11) l -0.9 ?0.2 0.9 LSB
l
ZSE Zero-Scale Error (Note 12) -700 ?160 700 ?V
Zero-Scale Error Drift ?4 ?V/?C
l
FSE Full-Scale Error V = 4.096V (REFBUF Overdriven) (Note 12) -0.1 ?0.025 0.1 %FS
REFBUF
Full-Scale Error Drift V = 4.096V (REFBUF Overdriven) (Note 12) ?2.5 ppm/?C
REFBUF
235818f
3
For more information www.linear.com/LTC2358-18