CDBWM8532-1

WM8532 w 24-bit, 192kHz Stereo DAC with 2Vrms Ground Referenced Line Output DESCRIPTION FEATURES The WM8532 is a stereo DAC with integral charge pump. This provides selectable 1VRMS or 2VRMS line driver outputs using a single 3.3V power supply rail.  The device features ground-referenced outputs and the use of a DC servo to eliminate the need for line driving coupling capacitors and effectively eliminate power on pops and clicks. The device is controlled and configured via a hardware control interface. The device supports all common audio sampling rates between 8kHz and 192kHz using all common MCLK fs rates. The audio interface operates in slave mode. The WM8532 has a 3.3V tolerant digital interface, allowing logic up to 3.3V to be connected. The device is available in a 24pin QFN.           High performance stereo DAC with ground referenced line driver Audio Performance  106dB SNR (‘A-weighted’)  -87dB THD 120dB mute attenuation All common sample rates from 8kHz to 192kHz supported Hardware control mode Data formats: LJ, I2S Maximum 1mV DC offset on Line Outputs Pop/Click suppressed Power Up/Down Sequencer AVDD, LINEVDD and DBVDD can operate at +3.3V ±10% allowing single supply 24-lead QFN package Operating temperature range: -40°C to 85°C APPLICATIONS  Consumer digital audio applications requiring 2Vrms output  Games Consoles  Set Top Box  A/V Receivers  DVD Players  Digital TV BLOCK DIAGRAM WOLFSON MICROELECTRONICS plc Production Data, June 2014, Rev 4.2 Copyright 2014 Wolfson Microelectronics plc WM8532 Production Data TABLE OF CONTENTS DESCRIPTION ....................................................................................................... 1  FEATURES ............................................................................................................ 1  APPLICATIONS..................................................................................................... 1  BLOCK DIAGRAM ................................................................................................ 1  TABLE OF CONTENTS ......................................................................................... 2  PIN CONFIGURATION .......................................................................................... 3  ORDERING INFORMATION .................................................................................. 3  PIN DESCRIPTION ................................................................................................ 4  ABSOLUTE MAXIMUM RATINGS ........................................................................ 5  RECOMMENDED OPERATING CONDITIONS ..................................................... 5  ELECTRICAL CHARACTERISTICS ..................................................................... 6  TERMINOLOGY ................................................................................................................ 6  POWER CONSUMPTION MEASUREMENTS....................................................... 7  SIGNAL TIMING REQUIREMENTS ...................................................................... 8  SYSTEM CLOCK TIMING ................................................................................................. 8  AUDIO INTERFACE TIMING – SLAVE MODE ................................................................ 9  POWER ON RESET CIRCUIT ........................................................................................ 10  DEVICE DESCRIPTION ...................................................................................... 12  INTRODUCTION ............................................................................................................. 12  DIGITAL AUDIO INTERFACE......................................................................................... 12  DIGITAL AUDIO DATA SAMPLING RATES .................................................................. 13  HARDWARE CONTROL INTERFACE ........................................................................... 14  POWER DOMAINS ......................................................................................................... 16  DIGITAL DE-EMPHASIS CHARACTERISTICS .................................................. 17  APPLICATIONS INFORMATION ........................................................................ 18  RECOMMENDED EXTERNAL COMPONENTS ............................................................ 18  RECOMMENDED ANALOGUE LOW PASS FILTER..................................................... 18  RELEVANT APPLICATION NOTES ............................................................................... 19  PACKAGE DIMENSIONS .................................................................................... 20  IMPORTANT NOTICE ......................................................................................... 21  ADDRESS ....................................................................................................................... 21  REVISION HISTORY ........................................................................................... 22  w PD, Rev 4.2, June 2014 2 WM8532 Production Data PIN CONFIGURATION 24-LEAD QFN (TOP VIEW) ORDERING INFORMATION ORDER CODE TEMPERATURE RANGE PACKAGE MOISTURE SENSITIVITY LEVEL PEAK SOLDERING TEMPERATURE WM8532CGEFL/V −40°C to +85°C 24-lead QFN MSL3 260oC WM8532CGEFL/RV −40°C to +85°C 24-lead QFN MSL3 260oC (pb-free) (pb-free, tape and reel) Note: Reel quantity = 3,500 w PD, Rev 4.2, June 2014 3 WM8532 Production Data PIN DESCRIPTION PIN NO NAME TYPE 1 BCLK Digital In Digital audio interface bit clock 2 MCLK Digital In Master clock 3 DBVDD Supply Digital Buffer Supply 4 NC 5 NC 6 LINEVDD Supply Charge Pump supply 7 NC 8 NC 9 CPCA Analogue Out 10 LINEGND Supply 11 CPCB Analogue Out Charge Pump fly back capacitor pin 12 CPVOUTN Analogue Out Charge Pump negative rail decoupling pin 13 LINEVOUTR Analogue Out Right line output 14 LINEREF Supply 15 LINEVOUTL Analogue Out 16 AGND Supply Analogue ground 17 AVDD Supply Analogue supply 18 VMID Analogue Out 19 MUTE ¯¯¯¯¯ Digital In 20 AMPLSEL Digital In 21 DEEMPH Digital In 22 AIFMODE Digital In 23 LRCLK Digital In Digital audio interface left/right clock 24 DACDAT Digital In Digital audio interface data input w DESCRIPTION Charge Pump fly back capacitor pin Charge Pump ground Ground reference for line output Left line output Analogue midrail decoupling pin 0 = Mute enabled 1 = Mute disabled 0 = 1VRMS line output 1 = 2VRMS line output 0 = De-emphasis filter disabled 1 = De-emphasis filter enabled 1 = 24-bit Left Justified 0 = 24-bit I2S PD, Rev 4.2, June 2014 4 WM8532 Production Data 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