The Analog Audio Amplifier Front-end Reference Design demonstrates how to build an audio front end for the TPA32xx class-D amplifier. The AUDIO-OPA1632EVM is the board that was designed to test the results of this design. Design files for the board are available in the reference design product folder. This design utilizes a standard Audio Interface Board (AIB) connector to drive two differential audio inputs of a TPA32xx EVM. The audio front end has selectable gains of 0, 6, and 12 dB and converts two single-ended audio signals into two fully differential signals driving the inputs of the TPA32xx. The distortion and noise performance (THD+N ratio) of the audio front end is significantly better than the THD+N ratio of the TPA32xx, which ensures that the audio front end does not degrade the performance of the overall system.
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Download ready-to-use system files to speed your design process.
Reference design overview and verified performance test data
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
| Type | Title | Date | ||
|---|---|---|---|---|
| * | User guide | TIDA-01359 EVM User's Guide | Aug. 03, 2018 | |
| Design guide | TIDA-01359 Audio-OPA1632EVM Audio Interface Board Design Guide | Apr. 13, 2018 |
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