ICL7107CMH+D

ADCs/DACs - Special Purpose Overview

The ICL7107CMH+D is a monolithic 3½-digit analog-to-digital converter (ADC) designed for direct LED display drive. It integrates polarity and digit drivers, segment decoders, a voltage reference, and a clock circuit. Utilizing dual-slope conversion with a zero-integrator phase, it eliminates overrange hangover and hysteresis. The device features true differential inputs and reference, low noise (<15µV P-P), and high input impedance. It operates on a single +5V supply with typical power dissipation under 10mW.

ADCs/DACs - Special Purpose Feature Summary

• Directly drives common anode LED displays without external driver circuitry
• Dual-slope A/D conversion with auto-zero to less than 10µV drift
• True differential input and reference for ratiometric measurements
• Integrated clock and voltage reference reducing external component count

ADCs/DACs - Special Purpose Applications

• Digital panel meters
• Precision null detection
• Bridge transducer measurement
• Battery-powered instrumentation

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific package code 'MH' against official Maxim Integrated documentation, as standard listings typically cite CPL (PDIP) or CQH (PLCC). Confirm RoHS compliance status associated with the '+' suffix and ensure the supplier provides valid traceability for this specific ordering variant.

ADCs/DACs - Special Purpose Selection Notes

Select the ICL7107 variant specifically for common anode LED displays; the ICL7106 is intended for LCDs. Ensure the application requires a single positive supply voltage, as the ICL7107 does not support negative supply rails unlike some legacy variants. Verify that the required resolution of 3½ digits meets the system accuracy needs.

ADCs/DACs - Special Purpose Part Context

This component belongs to the ICL7106/ICL7107 family of 3½-digit ADCs originally developed by Intersil and later acquired by Maxim Integrated. These devices are industry standards for low-cost, high-accuracy digital voltmeters and panel meters due to their high integration level and minimal peripheral requirements.

ADCs/DACs - Special Purpose Replacement Considerations

Public datasheets list ICL7107CPL+ and ICL7107CQH+ as standard equivalents. Verify pin compatibility if substituting with other 3½-digit ADCs, as interface requirements may differ.