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TC7129

Status: In Production

Features:

  • Count Resolution: ±19,999
  • Resolution on 200 mV Scale: 10 µV
  • True Differential Input and Reference
  • Low Power Consumption: 500 µA at 9V
  • Direct LCD Driver for 4-1/2 Digits
  • Low Battery Indicator, and Continuity Indicator
  • Overrange and Underrange Outputs
  • Range Select Input: 10:1
  • High Common Mode Rejection Ratio: 110 dB
  • External Phase Compensation Not Required
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Overview
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RoHS Information
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Device Overview

Summary

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 10µV 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.

Additional Features
    • Count Resolution: ±19,999
    • Resolution on 200 mV Scale: 10 µV
    • True Differential Input and Reference
    • Low Power Consumption: 500 µA at 9V
    • Direct LCD Driver for 4-1/2 Digits
    • Low Battery Indicator, and Continuity Indicator
    • Overrange and Underrange Outputs
    • Range Select Input: 10:1
    • High Common Mode Rejection Ratio: 110 dB
    • External Phase Compensation Not Required
Parametrics
Name
Value
Supply Voltage (V)
9
Power (mW)
4.5
Resolution (Digits)
4.5
Resolution (Counts)
20000
Display Type
LCD
Temp. Range (°C)
0 to 70

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
TC7129CKW
0.485400
3.895833
44
MQFP
10x10x2mm
Matte Tin
e3
TC7129CKW713
0.485400
1.296667
44
MQFP
10x10x2mm
Matte Tin
e3
TC7129CLW
2.375500
3.703704
44
PLCC
16.6x16.6x4.4mm
Matte Tin
e3
TC7129CPL
6.500000
10.600000
40
PDIP
.600in
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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