ICL7106CJL

ADCs/DACs - Special Purpose Overview

The Harris Corporation ICL7106CJL is a high-performance, low-power 3 1/2 digit analog-to-digital converter (ADC) designed for direct interface with liquid crystal displays (LCD). The device integrates seven-segment decoders, display drivers, a voltage reference, and an internal clock. It features true differential inputs and references, enabling precise measurements of bridge-type transducers such as load cells and strain gauges. Key electrical characteristics include a typical input bias current of 1pA, autozero accuracy to less than 10µV, and zero drift of less than 1µV/°C. The unit operates on a single power supply with typical power dissipation under 10mW.

ADCs/DACs - Special Purpose Feature Summary

• Integrated LCD display drive with multiplexed backplane capability
• True differential input and reference for enhanced noise rejection
• Low noise performance with less than 15µV peak-to-peak
• High input impedance with 1pA typical input current

ADCs/DACs - Special Purpose Applications

• Digital panel meters
• Precision digital voltmeters
• Bridge transducer measurement systems including load cells and strain gauges

ADCs/DACs - Special Purpose Procurement Notes

Verify the manufacturer origin, as Intersil acquired Harris Semiconductor's analog division. Confirm RoHS compliance status and package type (DIP-40) against specific datasheet revisions. Check for availability of Pb-Free Plus Anneal variants if environmental regulations require it.

ADCs/DACs - Special Purpose Selection Notes

Select the ICL7106CJL when an LCD output is required; use the ICL7107 variant for LED displays. Ensure the application supports single-supply operation. Verify that the external passive component count aligns with the minimal requirement of approximately ten components for basic functionality.

ADCs/DACs - Special Purpose Part Context

The ICL7106 is part of the classic ICL710x family of dual-slope integrating ADCs originally developed by Harris Semiconductor. These components established standards for low-cost, high-accuracy digital measurement instruments. The CJL suffix typically denotes a ceramic DIP package variant within this product line.

ADCs/DACs - Special Purpose Replacement Considerations

The ICL7107 serves as the functional equivalent for LED display applications. Other 3 1/2 digit ADCs may require significant circuit redesign due to differences in integration levels and pinouts.