Maxim Integrated ICL7109EPL

Description
The ICL7109 is a 12-bit analog-to-digital converter (ADC) designed for easy interfacing with microprocessors and UARTs. It features:
12-bit binary plus polarity and over-range outputs
Direct interface to microprocessor bus
UART handshake mode for serial data transmission
High accuracy with low rollover error and zero reading drift
Low power consumption and input bias current
Zero-integrator phase for fast overload recovery, eliminating hysteresis and "crosstalk"
Enhanced bus driving capability

Features
Improved 2nd source
Zero integrator phase for fast overload recovery
Hysteresis and "crosstalk" eliminated
Enhanced bus driving capability
Byte organized three-state outputs
UART handshake mode for serial interfacing
True differential input and reference
Up to 30 conversions per second
Significantly improved ESD protection
Monolithic, low power CMOS design

Applications
The ICL7109 is used in a wide range of data acquisition and control applications, including:
Measurement of analog data (pressure, resistance, temperature, speed, flow, power, voltage, weight, current)
Remote data logging
Microprocessor-based systems
UART-based data transmission