The ICL7109IJL is a high-performance 12-bit monolithic CMOS Analog-to-Digital Converter (ADC) designed by Intersil Corporation. This ADC offers high accuracy, excellent linearity, and low noise, making it suitable for a wide range of precision measurement applications.

The ICL7109IJL is commonly used in the following applications:

• Digital panel meters
• Data acquisition systems
• Process control instrumentation
• Analytical instruments
• Industrial scales
• Precision voltage and current measurement

Features

• 12-bit resolution
• Monolithic CMOS design
• High accuracy and linearity
• Low noise
• Direct interface to microprocessors
• On-chip clock oscillator
• Auto-zero and auto-polarity functions
• Low power consumption

Benefits

• Provides high-resolution analog-to-digital conversion for accurate measurements.
• Simplifies system design with direct microprocessor interface.
• Reduces external component count with on-chip clock oscillator.
• Ensures accurate and stable measurements with auto-zero and auto-polarity functions.
• Minimizes power consumption for battery-powered applications.
• Improved system performance due to its accuracy and low noise

The ICL7109IJL typically requires a ±5V power supply. It has a typical conversion time of 15ms. It features a differential analog input and a parallel digital output. The device includes an internal reference voltage, but an external reference can also be used for improved accuracy. It is available in a 40-pin DIP package, among others. Its CMOS construction provides high input impedance and low power dissipation. The ICL7109's auto-zero phase compensates for offset voltages, while the auto-polarity phase determines the polarity of the input signal, ensuring accurate bipolar measurements.