TC7116CPL

ADCs/DACs - Special Purpose Overview

The TC7116CPL is a 3-1/2 digit CMOS Analog-to-Digital Converter (ADC) manufactured by Microchip Technology in a 40-pin PDIP package. 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 features high-impedance differential inputs with 10^12 Ω impedance and 1pA leakage current. It operates on a single 9V supply for the TC7116 variant, consuming approximately 10mW. Key electrical characteristics include a typical noise of 15 µV peak-to-peak at 200mV full scale and linearity error less than 1 count.

ADCs/DACs - Special Purpose Feature Summary

• Integrated 3-1/2 digit dual-slope ADC with internal reference and display drivers
• High-impedance CMOS differential inputs (10^12 Ω, 1pA leakage)
• Display Hold function allows indefinite reading retention while conversions continue
• Auto-zero cycle eliminates need for external zero adjustment potentiometer

ADCs/DACs - Special Purpose Applications

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

ADCs/DACs - Special Purpose Procurement Notes

Verify component authenticity through authorized Microchip distributors. Confirm the specific suffix 'CPL' corresponds to the 40-pin PDIP package and commercial temperature range (0°C to +70°C). Check for RoHS compliance status as per the latest manufacturer documentation before integration into production designs.

ADCs/DACs - Special Purpose Selection Notes

Select the TC7116CPL for LCD display applications requiring low power consumption and battery operation. Ensure the input signal range matches the available full-scale options of 200mV or 2V. For LED display requirements, consider the TC7117 series instead, as the TC7116 lacks the necessary segment sinking current capabilities for direct LED driving.

ADCs/DACs - Special Purpose Part Context

The TC7116CPL belongs to the TC7116/A family of 3-1/2 digit ADCs. It is functionally identical to the TC7116 but housed in a plastic DIP package suitable for through-hole mounting. The 'C' suffix denotes the commercial temperature grade, distinguishing it from the 'I' suffix variants which support extended industrial temperatures (-25°C to +85°C).

ADCs/DACs - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers include the TC7116ACPL (improved drift specifications) and the ICM7224IPL+ from Analog Devices/Maxim Integrated.