MAX1407/MAX1408/MAX1409/MAX1414 19-2229 Rev 0 10/01 Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC General Description Features The MAX1407/MAX1408/MAX1409/MAX1414 are low- +2.7V to +3.6V Supply Voltage Range in Standby, power, general-purpose, multichannel data-acquisition Idle, and Run Mode (Down to 1.8V in Sleep Mode) systems (DAS). These devices are optimized for low- 1.15mA Run Mode Supply Current power applications. All the devices operate from a sin- gle +2.7V to +3.6V power supply and consume a 2.5A Sleep Mode Supply Current (Wake-Up, RTC, maximum of 1.15mA in Run mode and only 2.5A in and Voltage Monitor Active) Sleep mode. Multichannel 16-Bit Sigma-Delta ADC The MAX1407/MAX1408/MAX1414 feature a differential 1.5 LSB (typ) Integral Nonlinearity 8:1 input multiplexer to the ADC, a programmable 30Hz or 60Hz Continuous Conversion Rate three-state digital output, an output to shutdown an Buffered or Unbuffered Mode external power supply, and a data ready output from the ADC. The MAX1408 has eight auxiliary analog Gain of +1/3, +1, or +2V/V inputs, while the MAX1407/MAX1414 include four auxil- Unipolar or Bipolar Mode iary analog inputs and two 10-bit force/sense DACs. On-Chip Offset Calibration The MAX1414 features a 50mV trip threshold for the 10-Bit Force/Sense DACs signal-detect comparator while the others have a 0mV trip threshold. The MAX1409 is a 20-pin version of the Buffered 1.25V, 18ppm/C (typ) Bandgap DAS family with a differential 4:1 input multiplexer to the Reference Output ADC, one auxiliary analog input, and one 10-bit SPI/QSPI or MICROWIRE-Compatible Serial force/sense DAC. Interface The MAX1407/MAX1408/MAX1414 are available in System Support Functions space-saving 28-pin SSOP packages, while the MAX1409 is available in a 20-pin SSOP package. RTC (Valid til 9999) and Alarm High-Frequency PLL Clock Output (2.4576MHz) Applications +1.8V and +2.7V RESET and Power-Supply Voltage Monitors Medical Instruments Signal Detect Comparator Industrial Control Systems Interrupt Generator (INT and DRDY) Portable Equipment Three-State Digital Output Wake-Up Circuitry Data-Acquisition System 28-Pin SSOP (MAX1407/MAX1408/MAX1414), Automatic Testing 20-Pin SSOP (MAX1409) Robotics Pin Configurations Ordering Information TOP VIEW PART TEMP. RANGE PIN-PACKAGE FB2 1 28 OUT2 MAX1407CAI 0C to +70C 28 SSOP DO 2 27 IN3 MAX1408CAI 0C to +70C 28 SSOP FB1 3 26 DV DD MAX1409CAP 0C to +70C 20 SSOP OUT1 4 25 DGND IN0 5 24 CS MAX1414CAI 0C to +70C 28 SSOP REF 6 23 SCLK AGND 7 22 DIN MAX1407 Pin Configurations continued at end of data sheet. MAX1414 AV 8 21 DOUT DD Typical Operating Circuit appears at end of data sheet. CPLL 9 20 INT SPI and QSPI are trademarks of Motorola, Inc. 10 19 CLKIN WU1 MICROWIRE is a trademark of National Semiconductor Corp. WU2 11 18 CLKOUT RESET 12 17 FOUT IN1 13 16 DRDY IN2 14 15 SHDN Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC ABSOLUTE MAXIMUM RATINGS AV to AGND .........................................................-0.3V to +6V Analog Outputs to AGND ......................-0.3V to +(AV + 0.3V) DD DD AV to DV ...................................................... -0.3V to +0.3V Digital Outputs to DGND .......................-0.3V to +(AV + 0.3V) DD DD DD Analog Inputs to AGND.........................-0.3V to +(AV + 0.3V) REF to AGND.........................................-0.3V to +(AV + 0.3V) DD DD Digital Inputs to DGND.............................................-0.3V to +6V Operating Temperature Range: Maximum Current Input Into Any Pin ..................................50mA MAX14 CA ......................................................0C to +70C Continuous Power Dissipation (T = +70C) MAX14 EA ...................................................-40C to +85C A 20-Pin SSOP (derate 8.0mW/C above +70C) ...........640mW Lead Temperature (soldering, 10s) ................................+300 C 28-Pin SSOP (derate 9.52mW/C above +70C) .........762mW Storage Temperature Range .............................-65C to +150C DV to DGND.........................................................-0.3V to +6V Junction Temperature......................................................+150C DD AGND to DGND.....................................................-0.3V to +0.3V Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (DV = AV = +2.7V to 3.6V, 4.7F at REF, internal V , 18nF between CPLL and AV , 32.768kHz crystal across CLKIN and DD DD REF DD CLKOUT, T = T to T , unless otherwise noted. Typical values are at T = +25C.) A MIN MAX A PARAMETER SYMBOL CONDITIONS MIN TYP MAX U N I T S ADC ACCURACY Resolution (No Missing Codes) RES 16 Bits Unbuffered mode, Unipolar mode, gain = 1, 1.5 3.5 V = 0.2V, fully differential input (Note 7) NEG U nb uffered m ode, Uni p olar m ode, gai n = 2, 1.75 V = 0.625V, p se udo- d i ffer ential i nput N E G Integral Nonlinearity INL LSB Unbuffered mode, Bipolar mode, gain = 1, 1.70 V = 0.625V, fully differential input NEG Buffered mode, Bipolar mode, gain = 2, 2.50 V = 0.625V, fully differential input NEG Gain = 2 5 Unipolar Gain = 1 10 Gain = 1/3 30 Output RMS Noise (Note 1) V RMS Gain = 2 8 Bipolar Mode Gain = 1 16.5 Gain = 1/3 48.5 Offset Error On-chip calibration removes this error 1 % of FSR Offset Drift 0.5 V/C Gain Error Excludes offset and reference errors 1 % of FSR Gain Drift Excludes offset and reference errors 1 p p m / C 2 MAX1407/MAX1408/MAX1409/MAX1414