ICL7106CM44Z

ADCs/DACs - Special Purpose Overview

The ICL7106CM44Z is a 3½-digit analog-to-digital converter (ADC) designed for direct interface with liquid crystal displays (LCD). Manufactured by Renesas Electronics Corporation, this component integrates seven-segment decoders, display drivers, a reference voltage source, and an internal clock. It utilizes dual-slope integration technology to achieve high accuracy with low power dissipation, typically less than 10mW. The device features true differential inputs and references, ensuring precise null detection and minimal zero drift of less than 1µV/°C. Packaged in a 44-pin MQFP format, it operates within a commercial temperature range of 0°C to +70°C.

ADCs/DACs - Special Purpose Feature Summary

• Integrated 3½-digit A/D conversion with built-in LCD multiplexed backplane drive
• Low input bias current of 10pA (Max) and typical noise less than 15µV P-P
• Autozero capability reducing offset to less than 10µV
• Single power supply operation enabling simplified circuit design

ADCs/DACs - Special Purpose Applications

• Digital panel meters
• Digital voltmeters
• Precision measurement instruments

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'Z' against the manufacturer's latest documentation to confirm RoHS compliance and lead-free status. Check the product lifecycle status, as this part number may be subject to End-of-Life (EOL) notices or Last Time Buy notifications from Renesas. Confirm moisture sensitivity level (MSL) handling requirements prior to assembly.

ADCs/DACs - Special Purpose Selection Notes

Select the ICL7106 variant when interfacing with LCD displays requiring single-supply operation. Ensure the application requires a resolution of 3½ digits (up to 1999 counts). Verify that the external passive component count aligns with the minimal requirement of approximately ten components for basic functionality. Consider thermal management if operating near the upper limit of the 0°C to +70°C range.

ADCs/DACs - Special Purpose Part Context

This component belongs to the widely adopted ICL710x family of ADCs, originally introduced by Intersil and now produced by Renesas Electronics. The CM44 designation indicates a surface-mount 44-lead MQFP package. This series is recognized for its economy and versatility in building high-performance panel meters without additional active circuits.

ADCs/DACs - Special Purpose Replacement Considerations

Compatible alternatives include the ICL7107CM44Z for LED display applications and generic equivalents such as the UTC7106 or WS7106. Verify pin compatibility and electrical specifications before substituting.