CDBWM8532-1

CDBWM8532-1 Datasheet


Part Datasheet
CDBWM8532-1 CDBWM8532-1 CDBWM8532-1 (pdf)
Related Parts Information
WM8532CGEFL/RV WM8532CGEFL/RV WM8532CGEFL/RV
WM8532CGEFL/V WM8532CGEFL/V WM8532CGEFL/V
PDF Datasheet Preview
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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Datasheet ID: CDBWM8532-1 523270