Part | Datasheet |
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CDBWM8532-1 (pdf) |
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WM8532CGEFL/RV |
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WM8532CGEFL/V |
PDF Datasheet Preview |
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WM8532 24-bit, 192kHz Stereo DAC with 2Vrms Ground Referenced Line Output 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. BLOCK DIAGRAM • 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 • Consumer digital audio applications requiring 2Vrms output Games Consoles Set Top Box A/V Receivers DVD Players Digital TV WOLFSON MICROELECTRONICS plc WM8532 Production Data TABLE OF CONTENTS FEATURES 1 BLOCK DIAGRAM 1 TABLE OF 2 PIN CONFIGURATION 3 ORDERING 3 PIN 4 ABSOLUTE MAXIMUM RATINGS 5 RECOMMENDED OPERATING 5 ELECTRICAL CHARACTERISTICS 6 TERMINOLOGY 6 POWER CONSUMPTION 7 SIGNAL TIMING REQUIREMENTS 8 SYSTEM CLOCK 8 AUDIO INTERFACE TIMING SLAVE MODE 9 POWER ON RESET 10 DEVICE DESCRIPTION 12 INTRODUCTION 12 DIGITAL AUDIO 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 18 RELEVANT APPLICATION NOTES 19 PACKAGE 20 IMPORTANT NOTICE 21 ADDRESS 21 Production Data PIN CONFIGURATION WM8532 24-LEAD QFN TOP VIEW ORDERING INFORMATION ORDER CODE WM8532CGEFL/V TEMPERATURE RANGE −40°C to +85°C WM8532CGEFL/RV −40°C to +85°C Note Reel quantity = 3,500 PACKAGE 24-lead QFN pb-free 24-lead QFN pb-free, tape and reel MOISTURE SENSITIVITY LEVEL MSL3 PEAK SOLDERING TEMPERATURE 260oC MSL3 260oC WM8532 PIN DESCRIPTION PIN NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 NAME BCLK MCLK DBVDD NC LINEVDD NC CPCA LINEGND CPCB CPVOUTN LINEVOUTR LINEREF LINEVOUTL AGND AVDD VMID TYPE Digital In Digital In Supply Supply Analogue Out Supply Analogue Out Analogue Out Analogue Out Supply Analogue Out Supply Analogue Out Digital In AMPLSEL Digital In DEEMPH Digital In AIFMODE LRCLK DACDAT Digital In Digital In Digital In DESCRIPTION Digital audio interface bit clock Master clock Digital Buffer Supply Charge Pump supply Charge Pump fly back capacitor pin Charge Pump ground Charge Pump fly back capacitor pin Charge Pump negative rail decoupling pin Right line output Ground reference for line output Left line output Analogue ground Analogue supply 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 Digital audio interface left/right clock Digital audio interface data input Production Data Production Data WM8532 The Moisture Sensitivity Level for each package type is specified in Ordering Information. CONDITION AVDD, LINEVDD, DBVDD Voltage range digital inputs Voltage range analogue inputs Temperature range, TA Storage temperature after soldering Notes Analogue grounds must always be within 0.3V of each other. LINEVDD and AVDD must always be within 0.3V of each other. MIN -0.3V LINEGND -0.3V AGND -0.3V -40°C -65°C MAX +4.5V DBVDD +0.3V AVDD +0.3V +125°C +150°C RECOMMENDED OPERATING CONDITIONS PARAMETER TEST CONDITIONS Analogue supply range AVDD, LINEVDD Ground AGND, LINEGND Digital Buffer supply range DBVDD TYP 0 UNIT V WM8532 Production Data ELECTRICAL CHARACTERISTICS Test Conditions LINEVDD=AVDD=DBVDD=3.3V, LINEGND=AGND=0V, TA=+25°C, Slave Mode, fs=48kHz, MCLK=256fs, 24-bit data, AMPLSEL=1, unless otherwise stated. PARAMETER SYMBOL TEST CONDITIONS UNIT Analogue Output Levels Output Level 0dBFS, AMPLSEL=1 2.00xAVDD 2.04xAVDD 2.06xAVDD Vrms Load Impedance Load Capacitance 0dBFS, AMPLSEL=0 No external RC filter 1.00xAVDD 1.02xAVDD 1.03xAVDD Vrms With filter shown in Figure 17 DAC Performance Signal to Noise Ratio A-weighted Un-weighted Dynamic Range A-weighted |
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