TIDA-01359
噪声和失真性能经改善的模拟音频放大器前端参考设计
TIDA-01359
概述
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.
特性
- Single-ended-to-differential conversion with single fully-differential amplifier optimizes THD+N ratio
- Four parallel connectors for analog inputs: XLR, ¼”-stereo phone, RCA, and SMA jacks
- Gain is adjustable to 0 dB, 6 dB, and 12 dB
- The front end accepts differential inputs in addition to single-ended inputs
- 100-kHz bandwidth matching bandwidth of TPA32xx
我们开发的全面组装电路板仅用于测试和性能验证，不可用于销售。
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技术文档
| 类型 | 标题 | 下载最新的英文版本 | 日期 | |||
|---|---|---|---|---|---|---|
| * | 用户指南 | TIDA-01359 EVM User's Guide | 2018年 8月 3日 | |||
| 设计指南 | 具有更低噪声和失真的模拟音频放大器前端参考设计 | 英语版 | 2018年 8月 13日 |