TC7107ACLW

ADCs/DACs - Special Purpose Overview

The TC7107ACLW is a 3½-digit analog-to-digital converter with an integrated LED display driver, manufactured by Microchip Technology. It operates on a single 5V supply and features a precision internal reference with a maximum temperature coefficient of 20 ppm/°C. The device drives common-anode LEDs directly with 8 mA per segment current capability. Key electrical specifications include a typical power consumption of 1.8 mA, a peak-to-peak noise performance of 15 µV, and an input impedance of 10^12 Ω. It utilizes a dual-slope integrating architecture with an auto-zero cycle to eliminate offset errors.

ADCs/DACs - Special Purpose Feature Summary

• Directly drives common-anode LED displays with 8 mA segment sinking current.
• Internal precision voltage reference with 20 ppm/°C temperature drift.
• High-impedance differential inputs offering 1 pA leakage current.
• Auto-zero cycle ensures zero reading at zero volts input without external adjustment.

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 the package type corresponds to PLCC-44 for the 'CLW' suffix. Confirm the operating temperature range matches commercial requirements (0°C to +70°C). Ensure the design supports the specific pinout configuration for the 44-pin plastic leaded chip carrier package.

ADCs/DACs - Special Purpose Selection Notes

Select this component when a direct LED interface is required without additional driver logic. The TC7107A serves as a drop-in replacement for legacy TC7107 designs, allowing upgrades to the lower-drift A-series without changing external passive component values. Ensure the application requires a 5V supply, as the TC7107A differs from the TC7106A which supports 9V battery operation.

ADCs/DACs - Special Purpose Part Context

This part belongs to the TC7106/A and TC7107/A family of 3½-digit dual-slope ADCs. The TC7107 variant specifically includes circuitry to drive LED segments, whereas the TC7106 variant drives LCDs. The 'A' designation indicates improved temperature stability compared to the original TC7107 model.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers: TC7107AIPL, TC7107ACKW.