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TC7136

Status: End of Life

Features:

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

Summary

The TC7136 and TC7136A are low-power,3-1/2 digit with liquid crystal display (LCD)drivers with analog-to-digital converters.These devices incorporate an "integrator output zero"phase which guarantees overrange recovery.The performance of existing TC7126,TC7126A and ICL7126-based systems may be upgraded with minor changes to external,passive components. The TC7136A has an improved internal zener reference voltage circuit which maintains the analog common temperature drift to 35ppm/°C (typical)and 75 ppm/°C (maximum).This represents an improvement of two to four times over similar 3-1/2 digit converters.The costly,space-consuming external reference source may be removed. The TC7136/A limits linearity error to less than 1 count on 200mV or 2V full-scale ranges.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 currents and a 10 12 &8486; input impedance.The differential reference input allows ratiometric measurements for ohms or bridge transducer measurements.The 15 µVP-P noise performance guarantees a "rock solid" reading.The auto-zero cycle guarantees a zero display readout for a 0V input.

Please consider this device TC7106A , TC7126A

Additional Features
- Resolution on 200 mV Scale: 10µA - True Differential Input and Reference - Low Power Consumption: 500 µA at 9V - Direct LCD Driver for 4-1/2 Digits, Decimal Points Low-Battery Indicator, and Continuity Indicator - Overrange and Underrange Outputs - Range Select Input: 10:1 - High Common-Mode Rejection Ratio: 110dB - External Phase Compensation Not Required
Parametrics
Name
Value
Supply Voltage (V)
9
Power (mW)
0.5
Resolution (Digits)
3.5
Resolution (Counts)
2000
Display Type
LCD
Temp. Range (°C)
0 to 70

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