TC7106IPL

ADCs/DACs - Special Purpose Overview

The TC7106IPL is a 3-1/2 digit dual-slope integrating Analog-to-Digital Converter manufactured by Microchip Technology in a 40-pin PDIP package. It features an internal reference with a typical temperature drift of 80 ppm/°C and drives LCD displays directly. The device operates on a single 9V battery, consuming a maximum supply current of 1.8 mA. Key electrical specifications include a peak-to-peak noise of 15 µV at 200 mV full scale, high-impedance CMOS differential inputs with 10^12 Ω impedance, and a linearity error of less than ±1 count. It supports industrial operating temperatures from -25°C to +85°C.

ADCs/DACs - Special Purpose Feature Summary

• Directly drives 3-1/2 digit LCD displays without external drivers
• Internal precision reference with 80 ppm/°C typical temperature drift
• Auto-zero cycle eliminates need for external zero adjustment
• High-impedance differential inputs (10^12 Ω) simplify ratiometric measurements

ADCs/DACs - Special Purpose Applications

• Portable digital meters for voltage, current, and resistance
• Thermometry and bridge readouts for strain gauges or load cells
• Digital scales and process monitoring instrumentation

ADCs/DACs - Special Purpose Procurement Notes

Verify the 'I' suffix indicates the industrial temperature range (-25°C to +85°C). Confirm the 'PL' suffix corresponds to the 40-pin PDIP package. Ensure the specific variant matches the required display type, as this model drives LCDs. Check for RoHS compliance status in the latest datasheet revision.

ADCs/DACs - Special Purpose Selection Notes

Select the TC7106IPL for applications requiring direct LCD drive and low power consumption from a 9V source. Choose this over the TC7107 series if an LED display is not required. Ensure the application environment falls within the -25°C to +85°C range. For higher temperature stability requirements, consider the TC7106A variant which offers 20 ppm/°C drift.

ADCs/DACs - Special Purpose Part Context

The TC7106IPL belongs to the TC7106/A family of 3-1/2 digit ADCs. It serves as a drop-in replacement for earlier TC7106 models, allowing upgrades to lower drift specifications without changing external passive components. The 'I' designation specifically denotes the industrial temperature grade, distinguishing it from commercial variants.

ADCs/DACs - Special Purpose Replacement Considerations

The TC7106IPL is functionally compatible with the TC7106. For improved temperature stability, the TC7106AICP or TC7106AIPL may be used as direct replacements without modifying external component values.