MAX1136

 High-Speed I2C-Compatible Serial Interface 400kHz Fast Mode 1.7MHz High-Speed Mode
Single-Supply 2.7V to 3.6V (MAX1137/MAX1139) 4.5V to 5.5V (MAX1136/MAX1138)
Internal Reference 2.048V (MAX1137/MAX1139) 4.096V (MAX1136/MAX1138)
External Reference: 1V to VDD
Internal Clock
4-Channel Single-Ended or 2-Channel Fully Differential (MAX1136/MAX1137)
12-Channel Single-Ended or 6-Channel Fully Differential (MAX1138/MAX1139)
Internal FIFO with Channel-Scan Mode
Low Power 670µA at 94.4ksps 230µA at 40ksps 60µA at 10ksps 6µA at 1ksps 0.5µA in Power-Down Mode
Software-Configurable Unipolar/Bipolar
Small Packages 8-Pin µMAX (MAX1136/MAX1137) 16-Pin QSOP (MAX1138/MAX1139)

Hand-Held Portable Applications
Medical Instruments
Battery-Powered Test Equipment
Solar-Powered Remote Systems
Received-Signal-Strength Indicators
System Supervision

V_DD to GND..............................................................-0.3V to +6V
AIN0AIN11,
REF to GND............-0.3V to the lower of (V_DD + 0.3V) and 6V
SDA, SCL to GND.....................................................-0.3V to +6V
Maximum Current Into Any Pin .........................................±50mA
Continuous Power Dissipation (T_A = +70°C)
8-Pin µMAX (derate 4.5mW/°C above +70°C) .............362mW
16-Pin QSOP (derate 8.3mW/°C above +70°C)........666.7mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C

The MAX1136MAX1139 low-power, 10-bit, multichannel analog-to-digital converters (ADCs) feature internal track/hold (T/H), voltage reference, clock, and an I2C™-compatible 2-wire serial interface. These devices operate from a single supply of 2.7V to 3.6V (MAX1137/ MAX1139) or 4.5V to 5.5V (MAX1136/MAX1138) and require only 670µA at the maximum sampling rate of 94.4ksps. Supply current falls below 230µA for sampling rates under 46ksps. AutoShutdown™ powers down the devices between conversions, reducing supply current to less than 1µA at low throughput rates. The devices have four analog input channels each, while the MAX1138/MAX1139 have 12 analog input channels each. The fully differential analog inputs are software configurable for unipolar or bipolar, and single ended or differential operation.

The full-scale analog input range is determined by the internal reference or by an externally applied reference voltage ranging from 1V to VDD. The MAX1137/ MAX1139 feature a 2.048V internal reference and the MAX1136/MAX1138 feature a 4.096V internal reference.

The MAX1136/MAX1137 are available in an 8-pin µMAX package. The MAX1138/MAX1139 are available in a 16-pin QSOP package. The devices are guaranteed over the extended temperature range (-40°C to +85°C). For pin-compatible 12-bit parts, refer to the MAX1136MAX1139 data sheet. For pin compatible 8-bit parts, refer to the MAX1036MAX1039 data sheet.