ICL7107RCPL

ADCs/DACs - Special Purpose Overview

The ICL7107RCPL is a high-performance, low-power 3 1/2 digit analog-to-digital converter (ADC) designed for direct LED display drive. It integrates seven-segment decoders, display drivers, a reference, and a clock within a single 40-pin PDIP package. The device utilizes a dual-slope integration architecture to achieve high accuracy with autozero capabilities below 10µV and zero drift under 1µV/°C. It features true differential inputs and references, making it suitable for precision measurements of bridge-type transducers such as load cells and strain gauges. The component operates on a ±5V supply with typical power dissipation under 10mW.

ADCs/DACs - Special Purpose Feature Summary

• 3 1/2 Digit Resolution: Provides digital output values from 0 to 1999 for precise measurement.
• Direct LED Drive: Includes built-in 4-bit 7-segment display drivers compatible with instrument-size LEDs.
• High Accuracy Specifications: Features input bias current of 10pA (max), noise less than 15µV p-p, and rollover error under one count.
• True Differential Inputs: Supports differential input and reference voltages for enhanced noise immunity in sensor applications.

ADCs/DACs - Special Purpose Applications

• Digital Panel Meters
• Load Cell and Strain Gauge Interfaces
• Precision DC Voltmeters
• Bridge Transducer Signal Conditioning

ADCs/DACs - Special Purpose Part Context

The ICL7107 is part of the Intersil (now Analog Devices/Maxim Integrated) ICL710x family, which includes the ICL7106 for LCD displays. The 'R' suffix typically denotes a specific temperature range or revision variant within the PDIP-40 package family, operating between 0°C and +70°C. This component eliminates the need for external microcontrollers or programming for basic voltage display functions.

ADCs/DACs - Special Purpose Replacement Considerations

Direct replacements include the ICL7107CPL+ and ICL7137CPL+ from Analog Devices/Maxim Integrated. These components share the same functional pinout and specifications, ensuring compatibility in existing designs requiring 3 1/2 digit ADC functionality with LED drive capabilities.