TIPD176 Reference Design

Texas Instruments

1 MHz: Single-Supply: Photodiode Amplifier Reference Design


This circuit consists of a single-supply op amp configured as a transimpedance amplifier with a bandwidth greater than 1MHz for amplifying the light- dependent current of a photodiode. A small bias voltage derived from the positive supply and applied to the op amp’s non-inverting input. This prevents the output from saturating at the negative supply rail in the absence of input current.  It is designed to produce output voltages of .1V to 4.9V for photodiode currents of 0uA to 90uA.  This circuit is designed for use in common transimpedance amplifier applications such as barcode scanners: optical networking: and spectrometers.

  • Includes theory: component selection: TINA-TI simulation: PCB schematic & layout: bill of materials: and measured resultsSingle Supply Photodiode Amplifier>1MHz BandwidthGain 53.6k V/AInput: 0-90uAOutput .1V to 4.9V1.5mA supply current
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Part Number Name Companion Part
OPA320 OPA320 Buy Datasheet

Bill Of Materials

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Test Data

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Other Documents

Title Updated Type Size (KB)
TIPD176 BOM 21 Nov 2014 PDF 72
TIPD176 Schematic 21 Nov 2014 PDF 105