A High-Fidelity Headphone Amplifier for Current Output Audio DACs Reference Design


Design files


This TI Precision Verified Design circuit converts the differential current output of audio DACs to a single-ended voltage capable of driving low impedance headphones. This design is capable of meeting the high-fidelity performance levels currently being popularized in cell phones and portable audio players.

  • TI Precision Designs: Verified Design
  • Includes theory, component selection, TINA-TI simulation, PCB schematic & layout, bill of materials, and measured results
  • <.01dB variation (20Hz-20kHz)
  • <5 Degrees Phase variation (20Hz-20kHz)
  • Max Output Power: 55mW (32 ohms, THD+N: 0.00035%)
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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.

TIDC826A.ZIP (2026 K)

Detailed schematic diagram for design layout and components

TIDRC90A.PDF (288 K)

Detailed schematic diagram for design layout and components


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


Includes TI products in the design and potential alternatives.

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Technical documentation

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Type Title Date
* User guide High-Power High-Fidelity Headphone Amp for Current Output Audio DACs Ref Design (Rev. C) Oct. 25, 2016

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