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ADIADAU1781低功耗24位立体声编译码器办理方案

2017-11-24 02:43 PM| 发布者: 河源房源信息| 查看: 1427| 评论: 0

摘要: ADI公司的ADAU1781是低功耗24位立体声编译码器,可编程的SigmaDSP音频处理核,低噪音DAC和ADC支持取样速率从8kHz到96kHz,扬声器能向8欧姆负载输出400mW,模拟和数字I/O电压1.8V-3.3V,主要用在数码相机和数码摄像机.本京 ...

ADI公司的ADAU1781是低功耗24位立体声编译码器,可编程的SigmaDSP音频处理核,低噪音DAC和ADC支持取样速率从8kHz到96kHz,扬声器能向8欧姆负载输出400mW,模拟和数字I/O电压1.8 V- 3.3 V,主要用在数码相机和数码摄像机.本京电港论坛文章先容了ADAU1781主要特点,方框架图以及差分输入系统,模拟麦克风输入系统, 单端立体声线输入框架图和立体声数字麦克风输入系统的框架图,评估板EVAL-ADAU1781Z主要特点,框架图,电路原理图纸,质料清单和PCB线路板元件结构图.

The ADAU1781 is a low power, 24-bit stereo audio codec. The low noise DAC and ADC support sample rates from 8 kHz to 96 kHz. Low current draw and power saving modes make the ADAU1781 ideal for battery-powered audio applications.

A programmable SigmaDSP® core provides enhanced record and playback processing to improve overall audio quality.

The record path includes two digital stereo microphone inputs and an analog stereo input path. The analog inputs can be configured for either a pseudo differential or a single-ended stereo source. A dedicated analog beep input signal can be mixed into any output path. The ADAU1781 includes a stereo line output and speaker driver, which makes the device capable of supporting dynamic speakers.

The serial control bus supports the I2C® or SPI protocols, and the serial audio bus is programmable for I2S, left-justified, right-justified, or TDM mode. A programmable PLL supports flexible clock generation for all standard rates and available master clocks from 11 MHz to 20 MHz

ADAU1781主要特点:

24-bit stereo audio ADC and DAC

400 mW speaker amplifier (into 8 Ω load)

Programmable SigmaDSP audio processing core

Wind noise detection and filtering

Enhanced stereo capture (ESC)

Dynamics processing

Equalization and filtering

Volume control and mute

Sampling rates from 8 kHz to 96 kHz

Stereo pseudo differential microphone input

Optional stereo digital microphone input pulse-density modulation (PDM)

Stereo line output

PLL supporting a range of input clock rates

Analog and digital I/O 1.8 V to 3.3 V

Software control via SigmaStudio graphical user interface

Software-controllable, clickless mute

Software register and hardware pin standby mode

32-lead, 5 mm × 5 mm LFCSP

ADAU1781应用:

Digital still cameras

Digital video cameras

图1{京电港论坛}. ADAU1781框架图

图2{京电港论坛}. ADAU1781差分输入系统框架图

图3{京电港论坛}. ADAU1781模拟麦克风输入系统框架图

图4{京电港论坛}. ADAU1781单端立体声线输入系统框架图

图5{京电港论坛}. ADAU1781立体声数字麦克风输入系统框架图

ADAU1781 SigmaDSP评估板EVAL-ADAU1781Z
 
This user guide explains the design and setup of the ADAU1781 SigmaDSP® evaluation board.

This evaluation board provides full access to all analog and digital I/Os on the ADAU1781. The SigmaDSP is controlled by Analog Devices, Inc., SigmaStudio™ software, which interfaces to the board via a USB connection. This evaluation board can be powered either over the USB bus or by a single 3.8 V to 6 V supply, which is regulated to the voltages required on the board. The PC board is a 4-layer design, with a single ground plane and a single power plane on the inner layers. The board contains on-board microphones and speaker, and connectors for external microphones and speaker. The master clock can be provided externally or by the on-board 12.288 MHz active oscillator.

EVAL-ADAU1781Z评估包包罗:

ADAU1781 evaluation board

EVAL-ADUSB2EBZ (USBi) communications adapter

USB cable with Mini-B plug

Evaluation board/software quick-start guide

 
图6{京电港论坛}.评估板EVAL-ADAU1781Z外形实物图
 
图7{京电港论坛}.评估板EVAL-ADAU1781Z功能框架图

图8{京电港论坛}.评估板EVAL-ADAU1781Z电路原理图纸: SigmaDSP,模拟I/O和主时钟发生

图9{京电港论坛}.评估板EVAL-ADAU1781Z电路原理图纸:数字麦克风接口

图1{京电港论坛}0.评估板EVAL-ADAU1781Z电路原理图纸:串行音频数据接口

图1{京电港论坛}1.评估板EVAL-ADAU1781Z电路原理图纸:电源

图1{京电港论坛}2.评估板EVAL-ADAU1781Z电路原理图纸:GPIO

图1{京电港论坛}3.评估板EVAL-ADAU1781Z电路原理图纸:通信接口

评估板EVAL-ADAU1781Z质料清单:


图1{京电港论坛}4.评估板EVAL-ADAU1781Z PCB线路板元件结构图
详情请复制打开此衔接地址:
http://www.analog.com/static/imported-files/data_sheets/ADAU1781.pdf

http://www.analog.com/static/imported-files/user_guides/UG-177.pdf


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