High Fidelity Audio Headphone Playback Reference Design for Portable and Smartphone Applications
TIDA-00385
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Description

Since the use of high fidelity headphones is a growing trend for portable audio playback, higher performance DAC and Headphone Amplifiers are demanded. This system converts digital audio from USB, SPDIF, or optical sources into analog using PCM5242 audio DAC. A high performance TPA6120A2 headphone amplifier in conjunction with the differential DAC achieves stunning musical clarity and definition as well as industry leading noise performance, critical for low noise headphone playback. The power supply architecture is designed to work from a 3.3V source to increase flexibility and integration into existing products and systems.

Features
  • ±5V operation is derived from a 3.3V system power supply for integration into existing systems
  • Ground centered output
  • Stereo differential outputs on PCM5242 DAC for high noise rejection
  • Noise and Distortion performance is achieved all the way to the headphone
  • Automatic sample rate switching up to 384KHz
  • USB interface, used for evaluation, can be omitted once designed into end equipment

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Schematic/Block Diagram

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Test Data

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Design Files

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TI Devices (7)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
PCM5242  4.2-VRMS DirectPath™, 32-bit, 384-kHz, 114-dB Audio Stereo DAC  Audio converters  Sample & Buy View Design Kits & Evaluation Modules
SN74AUP1G125  Low-Power Single Bus Buffer Gate with 3-State Output  Buffer/driver  Sample & Buy View Design Kits & Evaluation Modules
SRC4392  High-end Combo Sample Rate Converter  Audio interface  Sample & Buy View Design Kits & Evaluation Modules
TPA6120A2  High Fidelity Stereo Headphone Amplifier  Audio amplifiers  Sample & Buy View Design Kits & Evaluation Modules
TPS65135  Split-Rail Converter, Single-Inductor, Multiple-Output (SIMO) Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS735  500mA, Adjustable, Low Quiescent Current, Low-Noise, High-PSRR, Single-Output LDO Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS736  Single Output LDO, 400mA, Adj.(1.2 to 5.5V), Cap free, Low Noise, Reverse Current Protection  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
PCM5242 Download
SN74AUP1G125 Download Download
Download Download
Download
Download Download
Download -
Download Download
Download Download
Download -
SRC4392 Download Download
TPA6120A2 Download Download
Download Download
TPS65135 Download Download
TPS735 Download Download
Download Download
TPS736 Download Download
Download Download
Download Download

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Technical Documents

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User guides (2)
Title Type Size (KB) Date
PDF 1227 11 Nov 2014
PDF 579 11 Nov 2014
Design files (6)
Title Type Size (KB) Date
ZIP 857 11 Nov 2014
ZIP 11993 11 Nov 2014
PDF 1094 11 Nov 2014
PDF 547 11 Nov 2014
PDF 236 11 Nov 2014
PDF 144 11 Nov 2014

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