TC7117RCPL

ADCs/DACs - Special Purpose Overview

The TC7117RCPL is a 3-1/2 digit CMOS Analog-to-Digital Converter (ADC) manufactured by Microchip Technology. It integrates seven-segment decoders, polarity and digit drivers, a voltage reference, and clock circuitry to construct a measurement system with 0.05% resolution. The device directly drives common anode LED displays with an 8mA segment drive current. Key electrical characteristics include a typical noise performance of 15µV peak-to-peak at a 200mV full-scale range, high-impedance differential inputs with 1pA leakage current, and a low temperature drift internal reference of 80 ppm/°C. It operates within a commercial temperature range of 0°C to +70°C.

ADCs/DACs - Special Purpose Feature Summary

• Directly drives common anode LED displays with 8mA segment sinking current
• Integrated low temperature drift internal reference (80 ppm/°C typical)
• High-impedance differential inputs offering 10^12Ω impedance and 1pA leakage
• Display hold function allows indefinite retention of the displayed reading

ADCs/DACs - Special Purpose Applications

• Thermometry systems
• Bridge readouts for strain gauges and load cells
• Digital meters for voltage, current, ohms, and power
• Portable instrumentation powered by 9V batteries

ADCs/DACs - Special Purpose Procurement Notes

Verify that the 'R' suffix in the part number TC7117RCPL corresponds to the specific package or temperature variant defined in the official Microchip datasheet DS21457D. Ensure compatibility with standard PDIP-40 footprints if applicable. Confirm supply voltage requirements match the ±5V design or single-supply generation methods outlined in the documentation.

ADCs/DACs - Special Purpose Selection Notes

Select the TC7117RCPL when direct LED driving capability is required without external buffer transistors. Choose this component over LCD variants (TC7116) for applications where higher visibility is needed. Ensure the application supports the necessary oscillator components for a 48kHz clock to achieve 3 readings per second. Verify that the input signal range aligns with the 200mV or 2V full-scale options.

ADCs/DACs - Special Purpose Part Context

The TC7117RCPL belongs to the TC7116/A and TC7117/A family of 3-1/2 digit ADCs from Microchip Technology. This family shares functional similarities but differs in display output capabilities; the TC7117 series is optimized for LED displays, whereas the TC7116 series includes backplane drivers for LCDs. The 'CPL' package code indicates a 40-pin PDIP package with a commercial temperature range.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.