Low Power Fully Differential Programmable Gain Amplifier Reference Design


Design files


Reference Design for a Low Power Fully Differential Programmable Gain Amplifier using the TI OPA2683 Low Power Dual Current Feedback Amplifier. This design guide reviews some of the design challenges necessary to create such a circuit. The design guide reviews the results and provides some recommendations for using/designing a Low Power FDA PGA.

  • Low Power Fully Differential Amplifier
  • Low Power Programmable Gain Amplifier
  • Wide Bandwidth Relative to High Gain
  • +/-5V supply voltage
  • Gains of 2, 21, 50, and 70 V/V
  • This reference design has been lab tested and is supported with design files and a design guide

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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.

TIDU111.PDF (481 K)

Reference design overview and verified performance test data

TIDR083.PDF (95 K)

Detailed schematic diagram for design layout and components

TIDR084.PDF (99 K)

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

TIDC054.ZIP (53 K)

Design file that contains information on physical board layer of design PCB


Includes TI products in the design and potential alternatives.

High-speed op amps (GBW ≥ 50 MHz)

OPA2683Very-low-power dual-current feedback operational amplifier

Data sheet: PDF

Technical documentation

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Type Title Date
Design guide TIDA-00025 Design Guide Aug. 27, 2013

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