MAX1139

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 MAX1136/MAX1137 have four analog input channels each, while the devices 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 devices are available in a 16-pin QSOP package. The MAX1136MAX1139 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.