Single-Ended Input to Differential Output Conversion Circuit Reference Design


Design files


This TI Precision Verified Design provides the theory, component selection, simulation, PCB design, and measurement details for a single ended input to differential output circuit which converts a single ended input of +0.1V to +2.4V into a differential output of ± 2.3V on a single +2.7V supply.  The output range is intentionally limited to maximize linearity.  The circuit is composed of 2 amplifiers.  One amplifier acts as a buffer and creates a voltage, Vout+.  The second amplifier inverts the input and adds a reference voltage to generate Vout-.  Both Vout+ and Vout- range from 0.1V to 2.4V.  The difference, Vdiff, is the difference between Vout+ and Vout-.  This makes the differential output voltage range +2.3V.

  • 100kHz Small Signal Bandwidth
  • Low Power:  100mA current consumption
  • ±0.1% FSR Vdiff Uncalibrated Error
  • ±0.01% FSR Vdiff Calibrated Error
  • Converts 0.1V - 2.4V Input to ±2.3V Output at +1.25V Vcm

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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.

TIDC037.ZIP (1446 K)

Detailed schematic diagram for design layout and components

TIDR113.PDF (77 K)

Detailed schematic diagram for design layout and components

TIDR114.PDF (61 K)

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

TIDC008.ZIP (399 K)

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


Includes TI products in the design and potential alternatives.

Precision op amps (Vos<1mV)

OPA333Micropower, 1.8-V, 17-µA zero-drift CMOS precision operational amplifier

Data sheet: PDF | HTML

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Technical documentation

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Type Title Date
* User guide Single Supply Single-Ended Input to Differential Output Design Guide Aug. 29, 2013
More literature Precision Amplifier Quickstart Kit brochure (Rev. A) Jan. 13, 2015

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