WM8768GEDS/V datasheet, PDF - EEWORLD Datasheet

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WM8768GEDS/V: DescriptionIC DAC 24BIT 8CH 192KHZ 28SSOP; CategoryAnalog mixed-signal IC converter; File Size407KB，38 Pages; ManufacturerCirrus Logic; Websitehttp://www.cirrus.com; Environmental Compliance

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WM8768GEDS/V Overview

IC DAC 24BIT 8CH 192KHZ 28SSOP

WM8768GEDS/V Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	Cirrus Logic
package instruction	SSOP, SSOP28,.3
Reach Compliance Code	compliant
Converter type	D/A CONVERTER
JESD-30 code	R-PDSO-G28
Number of digits	24
Number of functions	4
Number of terminals	28
Maximum operating temperature	85 °C
Minimum operating temperature	-25 °C
Package body material	PLASTIC/EPOXY
encapsulated code	SSOP
Encapsulate equivalent code	SSOP28,.3
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, SHRINK PITCH
power supply	3.3,5 V
Certification status	Not Qualified
surface mount	YES
technology	CMOS
Temperature level	OTHER
Terminal form	GULL WING
Terminal pitch	0.635 mm
Terminal location	DUAL

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24-bit, 192kHz 8-Channel DAC

DESCRIPTION

The WM8768 is a multi-channel audio DAC ideal for DVD

and surround sound processing applications for home hi-fi,

automotive and other audio visual equipment.

Four 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.

The audio data interface supports I

S, left justified, right

justified and DSP digital audio formats.

The device is controlled either 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.

WM8768

FEATURES

•

8-Channel DAC with PCM.

Audio Performance

−

103dB SNR (‘A’ weighted @ 48kHz) DAC

DAC Sampling Frequency: 8kHz – 192kHz

3-Wire SPI Serial or Hardware Control Interface

Programmable Audio Data Interface Modes

−

S, Left, Right Justified or DSP

−

16/20/24/32 bit Word Lengths

Four Independent stereo DAC outputs with independent

digital volume controls

Master or Slave Audio Data Interface

2.7V to 5.5V Analogue, 2.7V to 3.6V Digital supply

Operation

28 lead SSOP Package

•

APPLICATIONS

•

DVD Players

Surround Sound AV Processors and Hi-Fi systems

Automotive Audio

BLOCK DIAGRAM

VREFN

VREFP

DVDD

DGND

AGND

VMID

AVDD

MODE

MUTE

ML/I2S

MC/IWL

MD/DM

WOLFSON MICROELECTRONICS plc

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TESTREF1

Production Data, July 2010, Rev 4.3

Wolfson Microelectronics plc

WM8768

TABLE OF CONTENTS

Production Data

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

MASTER CLOCK TIMING ....................................................................................................... 8

DIGITAL AUDIO INTERFACE – MASTER MODE ................................................................... 8

DIGITAL AUDIO INTERFACE – SLAVE MODE ...................................................................... 9

MPU INTERFACE TIMING .................................................................................................... 11

INTERNAL POWER ON RESET CIRCUIT ...................................................................12

DEVICE DESCRIPTION ................................................................................................13

INTRODUCTION ................................................................................................................... 13

PCM AUDIO DATA SAMPLING RATES ................................................................................ 13

HARDWARE CONTROL MODES ......................................................................................... 14

DIGITAL AUDIO INTERFACE ............................................................................................... 16

POWERDOWN MODES ....................................................................................................... 19

SOFTWARE CONTROL INTERFACE OPERATION ............................................................. 20

CONTROL INTERFACE REGISTERS .................................................................................. 20

REGISTER MAP............................................................................................................32

DIGITAL FILTER CHARACTERISTICS ........................................................................33

DAC FILTER RESPONSES ..........................................................................................33

DIGITAL DE-EMPHASIS CHARACTERISTICS ..................................................................... 34

APPLICATIONS INFORMATION ..................................................................................35

RECOMMENDED EXTERNAL COMPONENTS .................................................................... 35

RECOMMENDED EXTERNAL COMPONENTS VALUES ..................................................... 35

SUGGESTED ANALOGUE LOW PASS POST DAC FILTERS ............................................. 36

PACKAGE DRAWING ...................................................................................................37

IMPORTANT NOTICE ...................................................................................................38

ADDRESS: ............................................................................................................................ 38

PD Rev 4.3 July 2010

WM8768GEDS/V Related Products

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Description	IC DAC 24BIT 8CH 192KHZ 28SSOP	KIT - WM8768 KIT CDB6118 MB DC	KIT - WM8768 KIT CDB6118 MB DC	IC DAC 24BIT 6CH 192KHZ 28SSOP

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