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TC7126A

Status: In Production

Features:

  • Fast Overrange Recovery, Guaranteed First Reading Accuracy
  • 35 ppm/°C Typ.
  • Guaranteed Zero Reading with Zero Input
  • Low Noise: 15 µVp-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
  • Low Power Dissipation: 500µW Typ., 900µW Max.
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The TC7126A is a 3½ digit CMOS analog-to-digital converter (ADC) containing all the active components necessary to construct a 0.05% resolution measurement system. Seven-segment decoders, digit and polarity drivers, voltage reference, and clock circuit are integrated on-chip. The TC7126A directly drives a liquid crystal display (LCD), and includes a backplane driver. A low-cost, high-resolution indicating meter requires only a display, four resistors, and four capacitors. The TC7126A's extremely low power drain and 9V battery operation make it ideal for portable applications. The TC7126A reduces linearity error to less than 1 count. Roll-over error (the difference in readings for equal magnitude but opposite polarity input signals) is below ±1 count. High-impedance differential inputs offer 1 pA leakage current and a 1012 ohm input impedance. The 15 µVp-p noise performance guarantees a great reading, and the auto-zero cycle guarantees a zero display reading with a 0V input. The TC7126A features a precision, low-drift internal voltage reference and is functionally identical to the TC7126. A low-drift external reference is not normally required with the TC7126A.

Additional Features
    • Fast Overrange Recovery, Guaranteed First Reading Accuracy
    • Low Temperature Drift Internal Reference
      • 35 ppm/°C Typ.
    • Guaranteed Zero Reading with Zero Input
    • Low Noise: 15 µVp-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
    • Low Power Dissipation: 500µW Typ., 900µW Max.
Parametrics
Name
Value
Supply Voltage (V)
9
Power (mW)
0.5
Resolution (Digits)
3.5
Resolution (Counts)
2000
Display Type
LCD
Temp. Range (°C)
-25 to 85

Documents

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Data Sheet

02/05/2013
313KB

Product Line Card


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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
TC7126ACKW713
0.485400
1.296667
44
MQFP
10x10x2mm
Matte Tin
e3
TC7126ACKW
0.485400
3.895833
44
MQFP
10x10x2mm
Matte Tin
e3
TC7126ACLW
2.375500
3.703704
44
PLCC
16.6x16.6x4.4mm
Matte Tin
e3
TC7126ACPL
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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