The TC7136/TC7136A are low power, 3-1/2 digit with liquid crystal display (LCD) drivers and analog-to-digital converters produced by Microchip Technology Inc. They have fast over range recovery, low temperature drift internal reference, zero reading with zero input, low noise, high resolution, low input leakage current, precision null detectors, high-impedance differential input, convenient 9V battery operation and low power dissipation.
The TC7136 and TC7136A are low‑power 3‑½‑digit analog‑to‑digital converters with LCD drivers, offering fast over‑range recovery, high resolution (0.05 %), low noise (15 µVp‑p) and very low input leakage (1 pA typ., 10 pA max). They include a high‑impedance differential input and can operate from a single battery supply.
The document lists electrical characteristics such as a 15 V supply rating, typical power dissipation of 0.5 mW (800 µW max), temperature drift of 35 ppm/°C (TC7136A) or 70 ppm/°C (TC7136), and provides detailed pin descriptions, package options, and typical application circuits.
| Resolution | 0.05 % |
|---|---|
| Input Leakage Current | 1 pA typ. / 10 pA max. |
| Noise | 15 µVp‑p |
| Power Dissipation | 0.5 mW typ. / 800 µW max. |
| Storage Temperature Range | -65 °C to +150 °C |
The typical input leakage current is 1 pA (maximum 10 pA).
The device exhibits a low noise of 15 µVp‑p.