A High-Fidelity Headphone Amplifier for Current Output Audio DACs Reference Design
TIPD177
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Key Document

Description

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.

Features
  • 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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Schematic/Block Diagram

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Test Data

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TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
OPA1612  SoundPlus™ Audio Operational Amplifier with 1.1nV/√Hz Noise, Low THD and Precision  Operational amplifiers (op amps)  Sample & Buy Not Available
OPA1622  SoundPlus™ Audio Operational Amplifier with High Performance, Low THD+N and Bipolar Input  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
OPA1612 Download Download
OPA1622 Download Download

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Technical Documents

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guides (1)
Title Type Size (KB) Date
PDF 1264 25 Oct 2016
Selection guides (1)
Title Type Size (KB) Date
PDF 4555 08 Nov 2016
Design files (2)
Title Type Size (KB) Date
PDF 288 12 Apr 2016
PDF 46 12 Apr 2016
Related Tools & Software

Software (1)



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