WM8522GEDS

厂商：
WOLFSON
封装：
描述：
WM8522GEDS - 24-bit, 192kHz 6-Channel DAC with 1.7Vrms Line Driver - Wolfson Microelectronics plc

数据手册：

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数据手册
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WM8522GEDS 数据手册

w DESCRIPTION The WM8522 is a multi-channel audio DAC ideal for DVD and surround sound processing applications for home hi-fi, automotive and other audio visual equipment. Three stereo 24-bit multi-bit sigma delta DACs are used with oversampling digital interpolation filters. Digital audio input word lengths from 16-32 bits and sampling rates from 8kHz to 192kHz are supported. Each DAC channel has independent digital volume and mute control, and provides 1.7Vrms line drive capability from a 5V supply. This makes the device ideal for costsensitive consumer applications requiring high line drive audio outputs The audio data interface supports I2S, left justified, right justified and DSP digital audio formats The device is controlled via a 3 wire serial interface or directly using the hardware interface. These interfaces provide access to features including channel selection, volume controls, mutes, de-emphasis and power management facilities. The device is available in a 28-lead SSOP. WM8522 24-bit, 192kHz 6-Channel DAC with 1.7Vrms Line Driver FEATURES • • 6-Channel DAC with 1.7Vrms line driver from 5V analogue supply Audio performance − • • • SNR 102dB (‘A’ weighted @ 48kHz) − THD -85dB (48kHz) DAC sampling frequency: 8kHz – 192kHz 3-Wire SPI serial or hardware control interface Programmable audio data interface modes − I2S, left, right justified or DSP − 16/20/24/32 bit word lengths Three independent stereo DAC outputs with independent digital volume controls Master or slave audio data interface 4.5V to 5.5V analogue, 2.7V to 3.6V digital supply operation Pin compatible with WM8766 28-lead SSOP package • • • • • APPLICATIONS • • • DVD Players Surround Sound AV Processors and Hi-Fi systems Automotive Audio BLOCK DIAGRAM WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews/ Pre Production, May 2006, 3.1 Copyright 2006 Wolfson Microelectronics plc WM8522 TABLE OF CONTENTS Pre-Production DESCRIPTION .......................................................................................................1 FEATURES.............................................................................................................1 APPLICATIONS .....................................................................................................1 BLOCK DIAGRAM .................................................................................................1 TABLE OF CONTENTS .........................................................................................2 PIN CONFIGURATION 28 LEAD SSOP ...............................................................3 ORDERING INFORMATION ..................................................................................3 PIN DESCRIPTION – 28 LEAD SSOP...................................................................4 ABSOLUTE MAXIMUM RATINGS.........................................................................5 RECOMMENDED OPERATING CONDITIONS .....................................................6 ELECTRICAL CHARACTERISTICS ......................................................................6 TERMINOLOGY ............................................................................................................ 7 MASTER CLOCK TIMING ............................................................................................. 7 DIGITAL AUDIO INTERFACE – MASTER MODE ......................................................... 8 DIGITAL AUDIO INTERFACE – SLAVE MODE ............................................................ 9 MPU INTERFACE TIMING .......................................................................................... 10 INTERNAL POWER ON RESET CIRCUIT ..........................................................11 DEVICE DESCRIPTION.......................................................................................12 INTRODUCTION ......................................................................................................... 12 AUDIO DATA SAMPLING RATES............................................................................... 12 HARDWARE CONTROL MODES ............................................................................... 13 DIGITAL AUDIO INTERFACE ..................................................................................... 15 POWERDOWN MODES ............................................................................................. 18 SOFTWARE CONTROL INTERFACE OPERATION................................................... 19 CONTROL INTERFACE REGISTERS ........................................................................ 19 REGISTER MAP...................................................................................................30 REGISTER MAP DESCRIPTION .........................................................................31 DIGITAL FILTER CHARACTERISTICS ...............................................................34 DAC FILTER RESPONSES .................................................................................34 DIGITAL DE-EMPHASIS CHARACTERISTICS........................................................... 35 APPLICATIONS INFORMATION .........................................................................36 RECOMMENDED EXTERNAL COMPONENTS .......................................................... 36 SUGGESTED ANALOGUE LOW PASS POST DAC FILTERS ................................... 37 PACKAGE DIMENSIONS ....................................................................................38 IMPORTANT NOTICE ..........................................................................................39 ADDRESS: .................................................................................................................. 39 w PP Rev 3.1 May 2006 2 Pre-Production WM8522 PIN CONFIGURATION 28 LEAD SSOP ORDERING INFORMATION DEVICE W M8522GEDS/V W M8522GEDS/RV Note: Reel quantity = 2,000 TEMPERATURE RANGE -25 to +85oC -25 to +85oC PACKAGE 28-lead SSOP (Pb-free) 28-lead SSOP (Pb-free, tape and reel) MOISTURE SENSITIVITY LEVEL MSL3 MSL3 PEAK SOLDERING TEMPERATURE 260°C 260°C w PP Rev 3.1 May 2006 3 WM8522 PIN DESCRIPTION – 28 LEAD SSOP PIN 1 NAME MODE TYPE Digital input Control format selection 0 = Software control 1 = Hardware control DESCRIPTION Pre-Production 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 MCLK BCLK LRCLK DVDD DGND DIN1 DIN2 DIN3 DNC CSB/I2S SCLK/IWL SDIN/DM MUTE TESTREF VREFN VREFP VMID NC NC VOUT1L VOUT1R VOUT2L VOUT2R VOUT3L VOUT3R AGND AVDD Digital input Digital input/output Digital input/output Supply Supply Digital input Digital input Digital input Do not connect Digital input Digital input Digital input Digital input/output Analogue output Supply Supply Analogue output No connect No connect Analogue output Analogue output Analogue output Analogue output Analogue output Analogue output Supply Supply Master clock; 128, 192, 256, 384, 512 or 768fs (fs = word clock frequency) Audio interface bit clock Audio left/right word clock Digital positive supply Digital negative supply DAC channel 1 data input DAC channel 2 data input DAC channel 3 data input Do not connect Software Mode: Serial interface Latch signal Hardware Mode: Input Audio Data Format Software Mode: Serial control interface clock Hardware Mode: Audio data input word length Software Mode: Serial interface data Hardware Mode: De-emphasis selection DAC Zero Flag output or DAC mute input Test reference DAC negative supply DAC positive reference supply Midrail divider decoupling pin; 10uF external decoupling No internal connection No internal connection DAC channel 1 left output DAC channel 1 right output DAC channel 2 left output DAC channel 2 right output DAC channel 3 left output DAC channel 3 right output Analogue negative supply and substrate connection Analogue positive supply Note: Digital input pins have Schmitt trigger input buffers. w PP Rev 3.1 May 2006 4 Pre-Production WM8522 ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings are stress ratings only. Permanent damage to the device may be caused by continuously operating at or beyond these limits. Device functional operating limits and guaranteed performance specifications are given under Electrical Characteristics at the test conditions specified. ESD Sensitive Device. This device is manufactured on a CMOS process. It is therefore generically susceptible to damage from excessive static voltages. Proper ESD precautions must be taken during handling and storage of this device. Wolfson tests its package types according to IPC/JEDEC J-STD-020B for Moisture Sensitivity to determine acceptable storage conditions prior to surface mount assembly. These levels are: MSL1 = unlimited floor life at

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WM8522GEDS

1. 物料型号： - 型号为WM8522，由Wolfson Microelectronics生产。

2. 器件简介： - WM8522是一款24位，192kHz的6通道DAC，具有1.7Vrms线驱动能力，适用于DVD和环绕声处理应用，支持从16-32位的数字音频输入字长和8kHz至192kHz的采样率。

3. 引脚分配： - MODE（引脚1）：控制格式选择，0=软件控制，1=硬件控制。 - MCLK（引脚2）：主时钟；支持128, 192, 256, 384, 512或768fs。 - BCLK（引脚3）：音频接口位时钟。 - LRCLK（引脚4）：音频左右字钟。 - DVDD（引脚5）：数字正供电。 - DGND（引脚6）：数字负供电。 - DIN1/DIN2/DIN3（引脚7/8/9）：DAC通道1/2/3数据输入。 - CSB/12S（引脚11）：软件模式下的串行接口锁存信号，硬件模式下的输入音频数据格式。 - SCLK/IWL（引脚12）：软件模式下的串行控制接口时钟，硬件模式下的音频数据输入字长。 - SDIN/DM（引脚13）：软件模式下的串行接口数据，硬件模式下的去加重选择。 - MUTE（引脚14）：DAC零标志输出或DAC静音输入。 - 其他引脚包括模拟输出、电源和地等。

4. 参数特性： - 信噪比（SNR）：102dB（A加权@48kHz）。 - 总谐波失真（THD）：-85dB（48kHz）。 - DAC采样频率：8kHz – 192kHz。 - 支持I2S、左对齐、右对齐和DSP数字音频格式。 - 主音频数据接口或从音频数据接口操作。

5. 功能详解： - 支持三对独立的立体声DAC输出，具有独立的数字音量控制。 - 3线SPI串行或硬件控制接口。 - 可编程音频数据接口模式。 - 支持4.5V至5.5V模拟供电，2.7V至3.6V数字供电操作。

6. 应用信息： - 适用于DVD播放器、环绕声AV处理器和高保真系统、汽车音频等。

7. 封装信息： - 该器件提供28引脚的SSOP封装，且与WM8766引脚兼容。

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