Key facts
- Brand
- MICROCHIP
- Model
- TC7129
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-01
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Microchip TC7129 Analog-to-Digital Converter Datasheet
The TC7129 is a 4‑½‑digit analog‑to‑digital converter designed for high‑resolution, battery‑powered digital multimeter applications. It integrates a true differential input, low‑power operation, on‑chip LCD driver, over‑range/under‑range outputs and a range‑select input, making it suitable for full‑featured multimeters and other digital measurement devices.
The document provides electrical characteristics, pin descriptions for PDIP, QFP and PLCC packages, typical application circuits, power‑supply options, temperature‑compensation methods and guidance for connecting external logic. It also includes mechanical drawings, package codes and ordering information.
MICROCHIP TC7129 specifications
| Count Resolution | ±19,999 counts |
|---|---|
| Resolution on 200 mV Scale | 10 µV |
| Low Power Consumption | 500 µA at 9 V |
| Supply Voltage Range | 6 V – 12 V |
| Clock Frequency | 120 kHz (typical) |
| Common Mode Rejection Ratio | 110 dB |
| Input Leakage Current | 1 – 10 pA |
| Temperature Coefficient | 2 – 7 ppm/°C |
| DGND Voltage | 4.5 V – 5.8 V |
Source: Microchip TC7129 Analog-to-Digital Converter Datasheet
All MICROCHIP TC7129 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum count resolution of the TC7129?
The TC7129 provides a count resolution of ±19,999 counts.
From: Microchip TC7129 Analog-to-Digital Converter Datasheet
How much power does the TC7129 draw at 9 V?
It consumes about 500 µA when powered from a 9 V supply.
From: Microchip TC7129 Analog-to-Digital Converter Datasheet
What is the count resolution of the TC7129?
The TC7129 provides a count resolution of +19,999.
From: Microchip TC7129 4-1/2‑Digit ADC with LCD Driver Datasheet
What is the low power consumption of the TC7129?
It consumes 500 µA at a 9 V supply.
From: Microchip TC7129 4-1/2‑Digit ADC with LCD Driver Datasheet