MAX1027/MAX1029/MAX1031 19-2854 Rev 5 8/11 10-Bit 300ksps ADCs with FIFO, Temp Sensor, Internal Reference General Description Features The MAX1027/MAX1029/MAX1031 are serial 10-bit ana- Internal Temperature Sensor (0.7C Accuracy) log-to-digital converters (ADCs) with an internal reference 16-Entry First-In/First-Out (FIFO) and an internal temperature sensor. These devices fea- ture on-chip FIFO, scan mode, internal clock mode, inter- Analog Multiplexer with True Differential nal averaging, and AutoShutdown. The maximum Track/Hold sampling rate is 300ksps using an external clock. The 16-, 12-, 8-Channel Single Ended MAX1031 has 16 input channels, the MAX1029 has 12 8-, 6-, 4-Channel True Differential input channels, and the MAX1027 has 8 input channels. (Unipolar or Bipolar) All input channels are configurable for single-ended or Accuracy: 1 LSB INL, 1 LSB DNL, No Missing differential inputs in unipolar or bipolar mode. All three Codes Over Temperature devices operate from a +3V supply and contain a 10MHz Scan Mode, Internal Averaging, and Internal Clock SPI/QSPI/MICROWIRE-compatible serial port. Low-Power Single +3V Operation The MAX1031 is available in 28-pin, 5mm x 5mm, TQFN 1mA at 300ksps with exposed pad and 24-pin QSOP packages. The MAX1027/MAX1029 are only available in QSOP pack- Internal 2.5V Reference or External Differential ages. All three devices are specified over the extended Reference -40C to +85C temperature range. 10MHz 3-Wire SPI/QSPI/MICROWIRE-Compatible Applications Interface Space-Saving 28-Pin 5mm x 5mm TQFN Package System Supervision Data-Acquisition Systems Ordering Information Industrial Control Systems PART TEMP RANGE PIN-PACKAGE Patient Monitoring MAX1027BCEE+T 0C to +70C 16 QSOP Data Logging MAX1027BEEE+T -40C to +85C 16 QSOP Instrumentation MAX1029BCEP+T 0C to +70C 20 QSOP MAX1029BEEP+T -40C to +85C 20 QSOP +Denotes a lead(Pb)-free/RoHS-compliant package. AutoShutdown is a trademark of Maxim Integrated Products, Inc. T = Tape and reel. SPI/QSPI are trademarks of Motorola, Inc. Ordering Information continued at end of data sheet. MICROWIRE is a trademark of National Semiconductor Corp. Pin Configurations + TOP VIEW AIN0 1 20 EOC + AIN1 2 19 DOUT AIN0 1 16 EOC AIN2 3 18 DIN AIN1 2 15 DOUT AIN3 4 17 CS AIN2 3 14 DIN MAX1029 AIN4 5 16 SCLK AIN3 4 MAX1027 13 CS AIN5 6 15 V DD AIN4 5 12 SCLK AIN6 7 14 GND AIN5 6 11 V DD AIN7 8 13 REF+ REF-/AIN6 7 10 GND AIN8 9 12 CNVST/AIN11 CNVST/AIN7 8 9 REF+ AIN9 10 11 REF-/AIN10 QSOP QSOP Pin Configurations continued at end of data sheet. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE10-Bit 300ksps ADCs with FIFO, Temp Sensor, Internal Reference ABSOLUTE MAXIMUM RATINGS V to GND..............................................................-0.3V to +6V 28-Pin TQFN (derate 20.8mW/C above +70C) .......1667mW DD CS, SCLK, DIN, EOC, DOUT to GND.........-0.3V to (V + 0.3V) Operating Temperature Ranges DD AIN0AIN13, REF-/AIN , CNVST/AIN , MAX10 C .......................................................0C to +70C REF+ to GND.........................................-0.3V to (V + 0.3V) MAX10 E ....................................................-40C to +85C DD Maximum Current into Any Pin............................................50mA Storage Temperature Range .............................-60C to +150C Continuous Power Dissipation (T = +70C) Junction Temperature......................................................+150C A 16-Pin QSOP (derate 8.3mW/C above +70C)...........667mW Lead Temperature (soldering, 10s) .................................+300C 20-Pin QSOP (derate 9.1mW/C above +70C)...........727mW Soldering Temperature (reflow) .......................................+260C 24-Pin QSOP (derate 9.5mW/C above +70C)...........762mW 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 (V = +2.7V to +3.6V, f = 300kHz, f = 4.8MHz (50% duty cycle), V = 2.5V, T = T to T , unless otherwise DD SAMPLE SCLK REF A MIN MAX noted. Typical values are at T = +25C.) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC ACCURACY (Note 1) Resolution RES 10 Bits Integral Nonlinearity INL 1.0 LSB Differential Nonlinearity DNL No missing codes over temperature 1.0 LSB Offset Error 0.5 2.0 LSB Gain Error (Note 2) 0.5 2.0 LSB Offset Error Temperature ppm/C 2 Coefficient FSR Gain Temperature Coefficient 0.8 ppm/C Channel-to-Channel Offset 0.1 LSB Matching DYNAMIC SPECIFICATIONS (30kHz sine wave input, 2.5V , 300ksps, f = 4.8MHz) P-P SCLK Signal-to-Noise Plus Distortion SINAD 62 dB Total Harmonic Distortion THD Up to the 5th harmonic -79 dBc Spurious-Free Dynamic Range SFDR -81 dBc Intermodulation Distortion IMD f = 29.9kHz, f = 30.1kHz -74 dBc in1 in2 Full-Power Bandwidth -3dB point 1 MHz Full-Linear Bandwidth S/(N + D) > 68dB 100 kHz 2 MAX1027/MAX1029/MAX1031