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Instrumentation Amplifier with DC Rejection Reference Design
TIPD191
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Key Document

Description

This design is an ac coupled instrumentation amplifier. More specifically, the circuit amplifies ac differential input signals and rejects dc differential and common mode signals. The input is dc coupled, so it achieves effective ac coupling by shifting the instrumentation amplifier reference voltage to cancel output offset.

Features
  • ac coupled INA
  • Maintains excellent CMRR
  • Rejects dc and slow moving offsets
  • Adjustable lower cutoff frequency

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TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
INA128  Precision, 130-dB CMRR, 700-µA, Low-Power, Instrumentation Amplifier  Amplifiers  Sample & Buy View Design Kits & Evaluation Modules
OPA188  Precision, Low-Noise, Rail-to-Rail Output, 36V Zero-Drift Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
INA128 Download -
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OPA188 Download Download
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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 1080 14 May 2015
Design files (2)
Title Type Size (KB) Date
PDF 205 02 Jun 2015
PDF 327 02 Jun 2015
Related Tools & Software

Software (1)



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