Maxim Integrated MAX1139MEEE

Description
The MAX1136-MAX1139 are low-power, 10-bit, multichannel analog-to-digital converters (ADCs) with 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 670uA 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 MAX1136/MAX1137 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 MAX1136-MAX1139 are guaranteed over the extended temperature range (-40°C to 85°C).

Features
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)

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