Instrumentation Amplifier with DC Rejection Reference Design


Design files


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.

  • ac coupled INA
  • Maintains excellent CMRR
  • Rejects dc and slow moving offsets
  • Adjustable lower cutoff frequency
??image.gallery.download_en_US?? View video with transcript Video

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.


Detailed schematic diagram for design layout and components

TIDRF10.PDF (327 K)

Detailed schematic diagram for design layout and components

TIDRF11.PDF (205 K)

Complete listing of design components, reference designators, and manufacturers/part numbers


Includes TI products in the design and potential alternatives.

Instrumentation amplifiers

INA128Precision, 130-dB CMRR, 700-µA, Low-Power, Instrumentation Amplifier

Data sheet: PDF | HTML
Precision op amps (Vos<1mV)

OPA188Precision, Low-Noise, Rail-to-Rail Output, 36V Zero-Drift Operational Amplifier

Data sheet: PDF | HTML

Technical documentation

= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* User guide Instrumentation Amplifier With DC Rejection Design Guide May 14, 2015

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​