Download Datasheets TC7129 Device 
Download datasheets and other technical documentation for microcontrollers - download datasheets and technical documentation for microcontrollers

PICmicro Microcontrollers
PICmicro flexible microcontroller solutions provide results!

Analog & Interface Products
A broad spectrum of analog products with a focus on power management, thermal management, linear and mixed-signal solutions

KEELOQ Authentication Products
KEELOQ is a patented code-hopping technology

Memory Products
A broadest selections of memory devices on the market for embedded control applications

microID RFID Products
Radio Frequency Identification Tags (RFID)
rfPIC Microcontrollers
New UHF radio frequency 8-bit microcontrollers

Home - Analog & Interface Products - Mixed Signal Devices - Display A/D Converters - TC7129 Device, download datasheet

Download Datasheets TC7129 Device

The TC7129 is a 4-1/2 digit analog-to-digital converter (ADC)that directly drives a multiplexed liquid crystal display (LCD).Fabricated in high-performance,low-power CMOS, the TC7129 ADC is designed specifically for high-resolution, battery-powered digital multimeter applications. The traditional dual-slope method of A/D conversion has been enhanced with a successive integration technique to produce readings accurate to better than 0.005% of full scale, and resolution down to 10V per count. The TC7129 includes features important to multimeter applications.It detects and indicates low-battery condition. A continuity output drives an annunciator on the display, and can be used with an external driver to sound an audible alarm.Overrange and underrange outputs and a range-change input provide the ability to create auto-ranging instruments.For snapshot readings,the TC7129 includes a latch-and-hold input to freeze the present reading. This combination of features makes the TC7129 the ideal choice for full-featured multimeter and digital measurement applications.

Datasheet and Other Documentation

Detailed Content

Lit. Number



TC7129 Datasheet


Download TC7129 Datasheet


In Production

Specification Chart

Display Type

Supply Voltage (V)

Resolution (Digits)

Resolution (Counts)

Power (mW)



4 1/2



Additional Features

Low Temperature Drift Internal Reference
TC7126 80 ppm/C Typ.
TC7126A 35 ppm/C Typ.
Guaranteed Zero Reading With Zero Input
Low Noise: 15VP-P
High Resolution: 0.05%
Low Input Leakage Current: 1pA Typ. 10pA Max
Precision Null Detectors With True Polarity at Zero
High-Impedance Differential Input
Convenient 9V Battery Operation With Low Power
Dissipation: 500 Typ. 900W Max

Package Options

40 PDIP(P), 44 PLCC(L), 44 PQFP(QF), 2008-2015 - download datasheets