WM8725CGED WOLFSON [Wolfson Microelectronics plc], WM8725CGED Datasheet
WM8725CGED
Related parts for WM8725CGED
WM8725CGED Summary of contents
Page 1
DESCRIPTION WM8725 is a high-performance stereo DAC designed for use in portable audio equipment, video CD players and similar applications. It comprises selectable normal or I compatible serial data interfaces for 16 to 24-bit digital inputs, high performance digital ...
Page 2
WM8725 DESCRIPTION ................................................................................................................ 1 FEATURES ..................................................................................................................... 1 APPLICATIONS .............................................................................................................. 1 BLOCK DIAGRAM ......................................................................................................... 1 TABLE OF CONTENTS .................................................................................................. 2 PIN CONFIGURATION ................................................................................................... 3 ORDERING INFORMATION ........................................................................................... 3 ABSOLUTE MAXIMUM RATINGS ................................................................................. 4 RECOMMENDED OPERATING CONDITIONS .............................................................. 4 ELECTRICAL CHARACTERISTICS .............................................................................. ...
Page 3
... CAP 5 10 VOUTR 6 GND 7 ORDERING INFORMATION DEVICE TEMPERATURE RANGE o o WM8725CGED - + - +85 WM8725CGED/R Note: Reel quantity: 3,000 w SCKI FORMAT DEEMPH NC MUTE 9 VOUTL 8 VDD PACKAGE MOISTURE SENSITIVITY 14-lead SOIC C (lead free) C 14-lead SOIC (Pb-free, tape and reel) Production Data ...
Page 4
WM8725 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 ...
Page 5
WM8725 ELECTRICAL CHARACTERISTICS Test Conditions 5V, GND = 0V + 48kHz, SCKI = 256fs unless otherwise stated PARAMETER Digital Logic Levels Input LOW level Input HIGH level Analogue Output Levels ...
Page 6
WM8725 PIN DESCRIPTION PIN NAME 1 LRCIN Digital input 2 DIN Digital input BCKIN Digital input connect 4 5 CAP Analogue output 6 VOUTR Analogue output 7 GND Supply 8 VDD Supply VOUTL Analogue output 9 MUTE ...
Page 7
WM8725 Figure 2 Power on/off Reset Timing SYMBOL Vpor Vpor_off Table 1 Power on/off Reset Timing At power on, when VDD and VMID have been established, PORB is released and the WM8725 has been reset. At power down, PORB is ...
Page 8
WM8725 DEVICE DESCRIPTION INTRODUCTION WM8725 is a complete stereo audio 16-24 bit digital-to-analogue converter, including digital interpolation filter, multibit sigma-delta with dither, and switched capacitor multibit stereo DAC and output smoothing filters. Special functions of mute and de-emphasis are provided, ...
Page 9
WM8725 The outputs of the 2 DACs are buffered out of the device by buffer amplifiers. These amplifiers will source load current of several mA and sink current up to 1.5mA, so allowing significant loads to be driven. The output ...
Page 10
WM8725 SYSTEM CLOCK The system clock is used to operate the digital filters and the noise shaping circuits. The system clock input is at pin 14 (SCKI). The frequency of WM8725’s system clock should be set to 256fs or 384fs, ...
Page 11
WM8725 RECOMMENDED EXTERNAL COMPONENTS FROM AUDIO PROCESSOR 10µF ANALOGUE OUTPUT External FOR RIGHT LPF CHANNEL GND 0.1µF 10µF VDD Figure 7 Recommended External Components DETAIL OF RECOMMENDED EXTERNAL COMPONENTS SHOWING THE EXTERNAL LOW PASS FILTER External LPF x2 for Stereo ...
Page 12
WM8725 PACKAGE DIMENSIONS D: 14 PIN SOIC 3.9mm Wide Body 0.10 (0.004) Dimensions Symbols (MM) MIN 1.35 A 0.10 A1 0.33 B 0.19 C 8.55 D 3.80 E 1.27 BSC e 5.80 H 0.25 h ...
Page 13
... Wolfson’s approval, licence, warranty or endorsement thereof. Any third party trade marks contained in this document belong to the respective third party owner. Reproduction of information from Wolfson datasheets is permissible only if reproduction is without alteration and is accompanied by all associated copyright, proprietary and other notices (including this notice) and conditions. ...
Page 14
... WM8725 REVISION HISTORY DATE REV ORIGINATOR 20/02/12 4.3 JMacD 20/02/12 4.3 JMacD 01/02/12 4.3 JMacD w CHANGES Order codes updated from WM8725GED/V and WM8725GED/RV to WM8725CGED and WM8725CGED/R to reflect change to copper wire bonding. MSL changed from MSL2 to MSL1. o Operating Temp changed to - +85 Production Data o C PD, Rev 4.3, February 2012 14 ...