音频

2015年 TAS5707/11 应用指导

Deyisupport 管理员Y — Wed, 02 Dec 2015 05:08:27 GMT

2015年 TAS5707/11 应用指导

http://www.ti.com/cn/lit/ZHCA644

2015年 TPA3110 应用指导

Deyisupport 管理员Y — Wed, 02 Dec 2015 05:05:40 GMT

2015年 TPA3110 应用指导

http://www.ti.com/cn/lit/ZHCA643

TLV320AIC3204系列 DAC直流耦合的应用

user 21ic — Thu, 24 Jul 2014 08:00:39 GMT

TLV320AIC3204[1]（简称 AIC3204）是一款超低功耗立体声音频 codec，由于其出色的音频量化、处理性能以及超低的功耗设计，广泛地应用在便携式娱乐以及工业安防等语音设备中。本文从应用角度出发，介绍 AIC3204 模拟输出端直流耦合的应用配置，便于用户在使用 AIC3204 处理音频信号的同时，也可以很好输出直流以及其它低频控制信号，用于直流系统控制。

TLC320AD58C Sigma-Delta立体声模拟至数字转换器

user 21ic — Thu, 24 Jul 2014 07:59:42 GMT

Texas Instruments (TI) reserves the right to make changes to its products or to discontinue any semiconductor product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. TI warrants performance of its semiconductor products and related software to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements.

TLC320AD57 Sigma-Delta 立体声 ADC (在主模式) 与 TMS320C5X DSP的连接指南

user 21ic — Wed, 23 Jul 2014 01:57:43 GMT

TLC320AD57C Sigma-Delta 立体声模拟至数字转换器

user 21ic — Wed, 23 Jul 2014 01:57:04 GMT

电流源和电流接收器应用指南

user 21ic — Wed, 23 Jul 2014 01:55:58 GMT

This is not exhaustive collection of circuits, but a compendium of preferred ones. Where added components may be needed for stability, they are shown. Experienced designers may elect to omit these components in some applications, but less seasoned practitioners will be able to put together a working circuit free from the frustration of how to make it stable.

基于抗锯齿和抗镜像滤波器的低噪声、低失真设计

user 21ic — Tue, 22 Jul 2014 02:31:07 GMT

In any digitizing system, antialiasing and anti-imaging filters are used to prevent the signal frequencies from “folding back” around the sample frequency and causing false (or alias) signals from appearing in the signal we are attempting to digitize. Very often, these filters must be very complex, high order analog filters in order to do their job effectively.

基于BURR-BROWN音频转换器和编解码器的控制端口和清零操作

user 21ic — Tue, 22 Jul 2014 02:30:16 GMT

This application bulletin provides operational details of the serial control port and reset functions for Burr-Brown digital audio data converters and CODECs. Specifically, this information applies to the PCM1723, PCM1727, PCM3000-series CODECs, and the PCM1800 A/D converter.

基于BURR-BROWN音频数据转换器和编解码器的低采样率操作

user 21ic — Tue, 22 Jul 2014 02:26:57 GMT

This application bulletin describes the operation and performance of Burr-Brown’s PCM digital audio products when using low sampling frequencies. For most consumer audio applications, customers using Burr-Brown’s PCM digital audio products will operate at a standard audio sampling frequency, such as 44.1kHz, 48kHz or 96kHz.

数字音频D/A转换器动态性能测试

user 21ic — Fri, 18 Jul 2014 00:46:01 GMT

This application bulletin will provide the reader with an understanding of test methods for audio digital-to-analog converters (DACs). In particular, delta-sigma (∆Σ) DACs require a special understanding due to the nature of their architecture. The dynamic specifications of interest for an audio DAC are THD+N (total harmonic distortion + noise), dynamic range, channel separation, and idle channel noise (often referred to as SNR, signal-to-noise ratio). There are many possible digital audio applications, but only CD-DA (reproduction of digital audio from a compact disc) has a standard specification defined by EIAJ (Electronic Industry Association of Japan).

PCM1804的增益调整和音频性能介绍

user 21ic — Fri, 18 Jul 2014 00:44:48 GMT

This application note describes the theory and operation of an analog gain scaling circuit that is required to obtain specified audio performance from the PCM1804.

I2S 设备和MSP430器件的连接指南

user 21ic — Fri, 18 Jul 2014 00:44:06 GMT

The MSP430 series of microprocessors are fast powerful devices ideally suited for use with the various wireless transceivers offered by Texas Instruments. In streaming audio applications, however, it is desirable that the microprocessor support an audio bus to allow for interconnection to an audio CODEC. This application note describes how to create an I2S-like bus (left-justified mode) from an SPI bus using a 4-bit counter, a 'D' type flip-flop, and a dual inverter gate.

音频编解码器音频串行接口配置指南

user 21ic — Fri, 11 Jul 2014 01:18:32 GMT

An audio serial interface (ASI) provides a means to transfer non-buffered audio data between processors and/or audio converters. These data are typically encoded in PCM twos complement format, although other format variations may be possible to achieve companding for lower data rate transfers. Audio converters based on the delta-sigma (ΔΣ) architecture require an internal master clock that operates at a much faster rate than the target sample rate. Although there are several means to obtain this master clock, care must be taken to ensure that this clock does not drift with respect to the ASI. This report discusses several configurations that prevent such situations.

基于内部PLL实现多个并行设备的同步

user 21ic — Fri, 11 Jul 2014 01:17:45 GMT

The Texas Instruments family of audio converters can be used in various multichip configurations in order to realize multichannel processing using the time-division multiplexing (TDM) feature. Using a multichip solution sometimes requires synchronization of channels such that all of the devices operating in parallel operate in lock-step with each other to prevent phase shift errors between channels. The mechanisms and programming of the TLV320ADC3101 are discussed in this application report.