Maxim Integrated MAX1108EUB T

Description
The MAX1108/MAX1109 are low-power, 8-bit, dual-channel analog-to-digital converters (ADCs) with an internal track/hold (T/H) voltage reference, clock, and serial interface. The MAX1108 is specified from 2.7V to 3.6V and consumes only 105μA. The MAX1109 is specified from 4.5V to 5.5V and consumes only 130μA. The analog inputs are software configurable, allowing unipolar/bipolar and single-ended/differential operation; battery monitoring capability is also included. The full-scale analog input range is determined by the internal reference of 2.048V (MAX1108) or 4.096V (MAX1109), or by an externally applied reference ranging from 1V to VDD. The MAX1108/MAX1109 also feature a software power-down mode that reduces power consumption to 0.5μA when the device is not in use. The 4-wire serial interface directly connects to SPI, QSPI, and MICROWIRE devices without external logic. Conversions up to 50ksps are performed using either the internal clock or an external serial-interface clock.

Features
Single Supply: 2.7V to 3.6V (MAX1108), 4.5V to 5.5V (MAX1109)
Low Power: 105μA at 3V and 50ksps, 0.5μA in Power-Down Mode
Software-Configurable Unipolar or Bipolar Inputs
Input Voltage Range: 0 to VDD
Internal Track/Hold
Internal Reference: 2.048V (MAX1108), 4.096V (MAX1109)
Reference Input Range: 1V to VDD
SPI/QSPI/MICROWIRE-Compatible Serial Interface
VDD Monitoring Mode
Small 10-Pin μMAX Package

Applications
Portable Data Logging
Hand-Held Measurement Devices
Medical Instruments
System Diagnostics
Solar-Powered Remote Systems
4-20mA-Powered Remote Systems
Receive-Signal Strength Indicators