TC7116/A/TC7117/A are 3-1/2 digit CMOS analog-to-digital converters (ADCs) containing all the active components necessary to construct a 0.05% resolution measurement system. They have features such as low temperature drift internal reference, display hold function, directly drives LCD or LED display, zero reading with zero input, low noise for stable display, auto-zero cycle eliminates need for zero adjustment potentiometer, true polarity indication, convenient 9V battery operation, high impedance CMOS differential inputs, and low power operation.
The TC7116/A and TC7117/A are 3‑1/2 digit CMOS analog‑to‑digital converters that integrate seven‑segment decoders, polarity drivers, voltage reference and clock circuitry on‑chip. They support LCD or LED displays, offer a display‑hold function, and feature low‑drift internal references for precise measurements.
The document lists electrical characteristics such as full‑scale ranges of 2 V or 200 mV, typical temperature drift of 20 ppm/°C, input leakage of 10 pA, and power dissipation up to 2.29 W in a 40‑pin CDIP package. Pin descriptions for the 40‑pin PDIP, CERDIP, POFP and PLCC packages are provided, along with detailed analog operation phases (auto‑zero, signal integrate, reference integrate).
| Full Scale Range | 2 V or 200 mV |
|---|---|
| Temperature Drift (typical) | 20 ppm/°C (TC7116A/TC7117A) |
| Power Dissipation (40‑Pin CDIP) | 2.29 W |
| Input Leakage Current | 10 pA |
| Common Mode Rejection Ratio | 50 dB |
| Supply Current (typical, TC7117/A) | 18 mA |
The devices can be configured for either a 2 V full‑scale range or a 200 mV full‑scale range.
The internal reference drifts about 20 ppm per degree Celsius for the TC7116A/TC7117A versions.
The input leakage current is specified as 10 pA.
The 40‑Pin CDIP package can dissipate up to 2.29 W.