《電子技術(shù)應(yīng)用》
您所在的位置:首頁 > 模擬設(shè)計(jì) > 解決方案 > Maxim:MAX9888立體聲音頻CODEC解決方案

Maxim:MAX9888立體聲音頻CODEC解決方案

2012-04-13

Maxim 公司的MAX9888是采用FlexSound技術(shù)的全特性立體聲音頻CODEC,立體聲DAC的DR為100dB(8kHz fS 96kHz),立體聲ADC的DR為91dB(8kHz fS 96kHz),立體聲低EMI D類放大器950mW/每路,集成了DirectDrive耳機(jī)放大器和差分接收放大器,其高性能和低功耗適合用在手持設(shè)備.本文介紹了MAX9888主要特性,功能方框圖,典型應(yīng)用電路圖以及MAX9888評(píng)估板主要特性,方框圖,電路圖和材料清單. The MAX9888 is a full-featured audio CODEC whose high performance and low power consumption make it ideal for portable applications.

Class D speaker amplifiers provide efficient amplification for two speakers. Low radiated emissions enable completely filterless operation. Integrated bypass switches optionally connect an external amplifier to the transducer when the Class D amplifiers are disabled.

DirectDrive® headphone amplifiers provide a true ground-referenced output, eliminating the need for large DC-blocking capacitors. 1.8V headphone opera-tion ensures low power consumption. The device also includes a differential receiver amplifier.

Three differential analog microphone inputs are available as well as support for two PDM digital microphones. Integrated switches allow microphone signals to be routed out to external devices. Two flexible single-ended or differential line inputs may be connected to an FM radio or other sources.

Integrated FlexSoundK technology improves loud-speaker performance by optimizing the signal level and frequency response while limiting the maximum distor-tion and power at the output to prevent speaker damage. Automatic gain control (AGC) and a noise gate optimize the signal level of microphone input signals to make best use of the ADC dynamic range.

The device is fully specified over the -40NC to +85NC extended temperature range.

MAX9888主要特性:

100dB DR Stereo DAC (8kHz < fS < 96kHz)

91dB DR Stereo ADC (8kHz < fS < 96kHz)

Stereo Low EMI Class D Amplifiers 950mW/Channel (8I, VSPKVDD_ = 4.2V)

Stereo DirectDrive Headphone Amplifiers

Differential Receiver Amplifier

2 Stereo Single-Ended/Mono Differential Line Inputs

3 Differential Microphone Inputs

FlexSound Technology 5-Band Parametric EQ Automatic Level Control (ALC) Excursion Limiter Speaker Power Limiter Speaker Distortion Limiter Microphone Automatic Gain Control and Noise Gate

Dual I2S/PCM/TDM Digital Audio Interfaces

Asynchronous Digital Mixing

Supports Master Clock Frequencies from 10MHz to 60MHz

RF Immune Analog Inputs and Outputs

Extensive Click-and-Pop Reduction Circuitry

I2C Control Interface

63 WLP Package (3.80mm x 3.30mm, 0.4mm Pitch)

圖1.MAX9888功能框圖

圖2.MAX9888典型應(yīng)用電路圖:采用模擬麥克風(fēng)輸入和旁路開關(guān)

圖3.MAX9888典型應(yīng)用電路圖:采用數(shù)字麥克風(fēng)輸入和接收放大器

MAX9888評(píng)估板

The MAX9888 evaluation kit (EV kit) is a fully assembled and tested circuit board that evaluates the MAX9888 audio codec. The MAX9888 is an integrated audio codec including microphone amplifiers, line amplifiers, an earpiece amplifier, stereo Class D amplifiers, stereo DirectDriveM headphone amplifiers, and digital signal processing. The EV kit also includes Windows XPM-,Windows VistaM-, and WindowsM 7-compatible software that provides a simple graphical user interface (GUI) for exercising the features of the device.

The EV kit provides access to all analog and digital inputs/outputs on the device. To enable easy connection to a wide range of audio sources, audio devices are included to convert both USB data and S/PDIF data to I2S.

The EV kit integrates a MAXQ2000 microcontroller to enable I2C communication with devices on the EV kit.

The EV kit software, running on a Windows PC, communicates with the EV kit over a standard USB port. The EV kit software provides an intuitive interface to exercise the
functions of the device.

The EV kit comes with a MAX9888EWY+ installed.

MAX9888評(píng)估板主要特性:

2.8V to 5.5V Single-Supply Operation

Proven Audio PCB Layout

On-Board USB-to-I2C Interface

On-Board USB-to-I2S Converter

On-Board S/PDIF Transceiver

On-Board Clock Source

On-Board Digital Microphone

Evaluates the MAX9888EWY+ in a 3.8mm x

3.3mm, 63-Bump WLP Package

Windows XP-, Windows Vista-, and Windows

7-Compatible Software

Fully Assembled and Tested

圖4.MAX9888評(píng)估板方框圖

圖5.MAX9888評(píng)估板電路圖(1)

圖6.MAX9888評(píng)估板電路圖(2)

圖7.MAX9888評(píng)估板電路圖(3)

圖8.MAX9888評(píng)估板電路圖(4)

圖9.MAX9888評(píng)估板電路圖(5)

MAX9888評(píng)估板材料清單(BOM):





圖10.MAX9888評(píng)估板元件布局圖
詳情請(qǐng)見:
http://datasheets.maxim-ic.com/en/ds/MAX9888.pdf

http://datasheets.maxim-ic.com/en/ds/MAX9888EVKIT.pdf



本站內(nèi)容除特別聲明的原創(chuàng)文章之外,轉(zhuǎn)載內(nèi)容只為傳遞更多信息,并不代表本網(wǎng)站贊同其觀點(diǎn)。轉(zhuǎn)載的所有的文章、圖片、音/視頻文件等資料的版權(quán)歸版權(quán)所有權(quán)人所有。本站采用的非本站原創(chuàng)文章及圖片等內(nèi)容無法一一聯(lián)系確認(rèn)版權(quán)者。如涉及作品內(nèi)容、版權(quán)和其它問題,請(qǐng)及時(shí)通過電子郵件或電話通知我們,以便迅速采取適當(dāng)措施,避免給雙方造成不必要的經(jīng)濟(jì)損失。聯(lián)系電話:010-82306118;郵箱:aet@chinaaet.com。
主站蜘蛛池模板: 国产21区 | 伊人激情综合 | 狠狠色狠狠综合久久 | 国产卡1卡2卡三卡网站免费 | 美女私密福利第一导航 | 在线视频 日韩 | 性猛交╳xxx乱大交 性美国xxxxx免费 | 精品欧美一区二区三区 | 怡春院院日本一区二区久久 | 天天操天天射天天舔 | 色天使久久综合给合久久97色 | 8000av在线 | 嗯啊视频在线 | 亚洲视频一 | 欧美成人怡春院在线激情 | 日韩成人性视频 | 国产精品1区2区3区 国产精品1区 2区 3区 | 免费网站看v片在线成人国产系列 | 91短视频版在线观看www | 全免费一级毛片在线播放 | 色综合久久久久久久久五月性色 | 手机看片国产免费久久网 | 男人操女人在线观看 | 污视频免费网站 | 高清一区二区亚洲欧美日韩 | 国产福利在线网址成人 | 欧美日韩免费在线观看 | 97精品伊人久久久大香线蕉 | 免费777my性欧美另类 | 欧美成国产精品 | yy4080午夜理论一级毛片 | 国内精品视频 在线播放 | 国产人成久久久精品 | 国产大片黄在线观看 | 黑人与中国女一级毛片不卡 | 曰曰啪天天拍视频在线 | 性猛交xxxxx按摩中国 | 欧美肥老妇 | 精品国产欧美一区二区三区成人 | 丁香六月综合激情 | 久久九九有精品国产56 |