ICL7107CM44

ADCs/DACs - Special Purpose Overview

The Intersil ICL7107CM44 is a high-performance, low-power 3½-digit analog-to-digital converter (ADC) designed for direct LED display driving. It integrates seven-segment decoders, display drivers, a reference voltage source, and an on-chip clock within a 44-pin MQFP package. The device utilizes dual-slope conversion architecture to achieve high accuracy with guaranteed zero reading at 0V input across all scales. Key electrical characteristics include a typical input bias current of 1pA, noise levels below 15µV peak-to-peak, and power dissipation typically under 10mW. It supports true differential inputs and references, facilitating precise measurements in bridge-type transducer applications.

ADCs/DACs - Special Purpose Feature Summary

• Directly drives instrument-size light emitting diode (LED) displays without additional active circuits
• Integrates seven-segment decoders, display drivers, reference, and clock circuitry
• True differential input and reference for enhanced measurement accuracy
• Low power dissipation typically less than 10mW

ADCs/DACs - Special Purpose Applications

• Digital panel meters
• Digital multimeters
• Bridge-type transducer measurements such as load cells and strain gauges
• Precision null detection systems

ADCs/DACs - Special Purpose Part Context

The ICL7107CM44 belongs to the ICL7107 series of 3½-digit A/D converters originally developed by Intersil Corporation. This series is distinguished from the ICL7106 by its capability to directly drive LED displays, whereas the ICL7106 interfaces with LCDs. The CM44 suffix denotes the specific 44-pin Moisture Sensitive Quad Flat Package (MQFP) housing. The component represents a standard solution for cost-effective, high-accuracy digital instrumentation requiring minimal external support components.

ADCs/DACs - Special Purpose Replacement Considerations

Public documentation lists ICL7107CM44T as a tape-and-reel variant of the same functional device. Other manufacturers produce pin-compatible equivalents, but specific substitution requires verification of supply voltage requirements and display interface compatibility against the original datasheet specifications.