ICL7107CPL-3

ADCs/DACs - Special Purpose Overview

The ICL7107CPL-3 is a discontinued 3.5-digit analog-to-digital converter (ADC) and LED display driver manufactured by Analog Devices Inc./Maxim Integrated. It utilizes a dual-slope integration architecture to convert differential voltage inputs into digital signals for direct driving of seven-segment LED displays. The device integrates an internal clock, reference source, and segment drivers within a 40-pin Plastic Dual In-Line Package (PDIP). Designed for single-supply operation at 5V, it features low power dissipation, typically under 10mW, and operates within a commercial temperature range of 0°C to +70°C.

ADCs/DACs - Special Purpose Feature Summary

• Integrated 3.5-digit ADC with built-in seven-segment decoder and LED display drivers
• Dual-slope conversion architecture ensuring high accuracy and noise rejection
• True differential input and reference capabilities for bridge sensor applications
• Low power consumption with typical dissipation below 10mW

ADCs/DACs - Special Purpose Applications

• Digital panel meters and voltmeters
• Weigh scales using load cells or strain gauges
• Industrial process control instrumentation
• Temperature monitoring systems with thermocouple or RTD inputs

ADCs/DACs - Special Purpose Procurement Notes

This component is officially listed as obsolete and no longer in production. Sourcing requires verification of stock availability from authorized distributors or third-party suppliers. Buyers must confirm the manufacturing date code and physical condition of available units, as these are end-of-life items. Cross-referencing with current replacement parts is recommended for new designs.

ADCs/DACs - Special Purpose Selection Notes

Select this part only for maintenance or repair of existing equipment where pin compatibility is critical. For new designs, consider modern equivalents such as the TC7107 or ICL7107CPL+ which may offer updated packaging or compliance status. Verify that the 40-pin PDIP footprint matches the target PCB layout and that the 5V single-supply requirement aligns with the system power architecture.

ADCs/DACs - Special Purpose Part Context

The ICL7107 series belongs to a family of popular 3½-digit A/D converters originally introduced by Intersil and later acquired by Maxim Integrated, now part of Analog Devices. The 'CPL' suffix denotes the 40-pin plastic DIP package, while '-3' indicates a specific tube packaging variant. This chip was widely used in cost-sensitive instrumentation before being superseded by more integrated solutions.

ADCs/DACs - Special Purpose Replacement Considerations

Direct pin-compatible substitutes include the ICL7107CPL+ and ICL7137CPL+. Alternative manufacturers offering functionally similar devices include Microchip Technology's TC7107 series. Verify electrical specifications and package dimensions before substitution.