Introduces the features and characteristics of TC7116/A/TC7117/A, including low temperature drift internal reference, display hold function, direct drive LCD or LED display, zero reading with zero input, low noise for stable display, 2V or 200mV full scale range, auto-zero cycle eliminates the need for zero, adjustment potentiometer, true polarity indication for precision null applications, 9V battery operation, high-impedance CMOS differential inputs, low power operation, etc.
The TC7116/A and TC7117/A are 3‑1/2 digit CMOS analog‑to‑digital converters with integrated reference, display drivers, and hold function. They can directly drive LCD or common‑anode LED displays and are suited for thermometry, bridge readouts, digital meters, scales, and portable instrumentation.
The document lists electrical characteristics such as supply voltage, power dissipation, temperature range, input leakage, noise, and linearity, as well as a complete pin‑function table and typical application circuits. Package options include 40‑pin PDIP, CERDIP, PLCC and 44‑pin PQFP.
| Supply Voltage | V+ to V- (TC7116/TC7116A) / V+ to GND (TC7117/TC7117A) |
|---|---|
| Input Leakage Current | 10 pA |
| Zero Input Reading | 0 |
| Input Resistance (Pin 1) | 30 kΩ – 70 kΩ |
| Supply Current (no LED) | 0.8 mA – 18 mA |
TC7116/TC7116A use V+ to V‑, while TC7117/TC7117A use V+ to GND.
The input leakage current is specified as 10 pA.
Pin 1 (HLDR) holds the present display reading when driven high.