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WM8734_06

WM8734_06

  • 厂商:

    WOLFSON

  • 封装:

  • 描述:

    WM8734_06 - Stereo Audio CODEC - Wolfson Microelectronics plc

  • 数据手册
  • 价格&库存
WM8734_06 数据手册
w Stereo Audio CODEC DESCRIPTION The WM8734 is a low power stereo CODEC ideal for MD, CD-RW machines and DAT recording applications. Stereo line inputs are provided, along with a mute function and programmable line level volume control. Stereo 24-bit multi-bit sigma delta ADCs and DACs are used with oversampling digital interpolation and decimation filters. Digital audio input word lengths from 16-32 bits and sampling rates from 8kHz to 96kHz are supported. Stereo audio line level outputs are provided along with antithump mute and power up/down circuitry. The device is controlled via a 2 or 3 wire serial interface. The interface provides access to all features including level controls, mutes, de-emphasis and power management facilities. The device is available in 20-lead SSOP or 28lead, 5x5mm QFN packages. • • • • • • WM8734 FEATURES • Audio Performance − 90dB SNR (‘A’ weighted @ 48kHz) ADC − 100dB SNR (‘A’ weighted @ 48kHz) DAC − 2.7 – 3.6V Digital Supply Operation − 2.7 – 3.6V Analogue Supply Operation ADC and DAC Sampling Frequency: 8kHz – 96kHz Selectable ADC High Pass Filter 2 or 3-Wire MPU Serial Control Interface Programmable Audio Data Interface Modes − − − I S, Left, Right Justified or DSP 16/20/24/32 bit Word Lengths Master or Slave Clocking Mode 2 Stereo Audio Inputs and Outputs 20-lead SSOP or 5x5mm QFN Package Options APPLICATIONS • • CD and Minidisc Recorder MP3 Player / Recorder BLOCK DIAGRAM CSB SDIN MODE SCLK AVDD CONTROL INTERFACE VMID AGND W WM8734 RLINEIN VOL ADC DAC MUTE ROUT +12 to -34.5dB, 1.5dB Steps DIGITAL FILTERS LLINEIN VOL ADC DAC MUTE LOUT +12 to -34.5dB, 1.5dB Steps CLKIN DIVIDER (Div x1, x2) DIGTAL AUDIO INTERFACE DBVDD MCLK DACDAT DACLRC W OLFSON MICROELECTRONICS plc To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews/ ADCLRC ADCDAT Production Data, November 2006, Rev 4.1 Copyright 2006 Wolfson Microelectronics plc DCVDD DGND BCLK WM8734 Production Data TABLE OF CONTENTS DESCRIPTION .......................................................................................................1 FEATURES.............................................................................................................1 APPLICATIONS .....................................................................................................1 BLOCK DIAGRAM .................................................................................................1 PIN CONFIGURATION – SSOP.............................................................................3 ORDERING INFORMATION - SSOP .....................................................................3 PIN DESCRIPTION - SSOP ...................................................................................4 PIN CONFIGURATION – QFN ...............................................................................5 ORDERING INFORMATION - QFN........................................................................5 PIN DESCRIPTION - QFN......................................................................................6 ABSOLUTE MAXIMUM RATINGS.........................................................................7 RECOMMENDED OPERATING CONDITIONS .....................................................7 ELECTRICAL CHARACTERISTICS ......................................................................8 TERMINOLOGY .....................................................................................................9 POWER CONSUMPTION (EXAMPLES) .............................................................10 MASTER CLOCK TIMING....................................................................................11 DIGITAL AUDIO INTERFACE – MASTER MODE ....................................................... 11 DIGITAL AUDIO INTERFACE – SLAVE MODE .......................................................... 12 MPU INTERFACE TIMING .......................................................................................... 14 DEVICE DESCRIPTION.......................................................................................16 AUDIO SIGNAL PATH................................................................................................. 16 DEVICE OPERATION ................................................................................................. 22 AUDIO DATA SAMPLING RATES............................................................................... 27 ACTIVATING DSP AND DIGITAL AUDIO INTERFACE .............................................. 32 SOFTWARE CONTROL INTERFACE......................................................................... 32 POWER DOWN MODES ............................................................................................ 34 REGISTER MAP ......................................................................................................... 36 DIGITAL FILTER CHARACTERISTICS ...............................................................38 TERMINOLOGY .......................................................................................................... 39 DAC FILTER RESPONSES .................................................................................39 ADC FILTER RESPONSES .................................................................................39 ADC HIGH PASS FILTER ........................................................................................... 40 DIGITAL DE-EMPHASIS CHARACTERISTICS ...................................................40 APPLICATIONS INFORMATION .........................................................................42 RECOMMENDED EXTERNAL COMPONENTS .......................................................... 42 MINIMISING POP NOISE AT THE ANALOGUE OUTPUTS........................................ 43 PACKAGE DIMENSIONS (SSOP) .......................................................................44 PACKAGE DIMENSIONS (QFN) .........................................................................45 IMPORTANT NOTICE ..........................................................................................46 ADDRESS: .................................................................................................................. 46 w PD Rev 4.1 November 2006 2 WM8734 PIN CONFIGURATION – SSOP DGND DBVDD BCLK DACDAT DACLRC ADCDAT ADCLRC LOUT ROUT AVDD 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 DCVDD MCLK SCLK SDIN CSB MODE LLINEIN RLINEIN VMID AGND Production Data ORDERING INFORMATION - SSOP DEVICE XWM8734EDS TEMPERATURE RANGE -25 to +85 C -25 to +85oC o PACKAGE 20-lead SSOP (Pb-free) 20-lead SSOP (Pb-free tape and reel) MOISTURE SENSITIVITY LEVEL MSL1 PEAK SOLDERING TEMPERATURE 260°C XWM8734EDS/R Note: Reel quantity = 2,000 MSL1 260°C w PD Rev 4.1 November 2006 3 WM8734 PIN DESCRIPTION - SSOP PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Note: 1. Pull Up/Down only present when Control Register Interface ACTIVE = 0 to conserve power. NAME DGND DBVDD BCLK DACDAT DACLRC ADCDAT ADCLRC LOUT ROUT AVDD AGND VMID RLINEIN LLINEIN MODE CSB SDIN SCLK MCLK DCVDD TYPE Ground Supply Digital Input/Output Digital Input Digital Input/Output Digital Output Digital Input/Output Analogue Output Analogue Output Supply Ground Analogue Output Analogue Input Analogue Input Digital Input Digital Input Digital Input/Output Digital Input Digital Input Supply DESCRIPTION Digital GND Digital Buffers VDD Digital Audio Bit Clock, Pull Down, (see Note 1) DAC Digital Audio Data Input DAC Sample Rate Left/Right Clock. Pull Down (see Note 1) ADC Digital Audio Data Output ADC Sample Rate Left/Right Clock, Pull Down (see Note 1) Left Channel Line Output Right Channel Line Output Analogue VDD Analogue GND Mid-rail reference decoupling point Right Channel Line Input (AC coupled) Left Channel Line Input (AC coupled) Control Interface Selection, Pull Up (see Note 1) Production Data 3-Wire MPU Chip Select / 2-Wire MPU interface address selection, active low, Pull up (see Note 1) 3-Wire MPU Data Input / 2-Wire MPU Data Input 3-Wire MPU Clock Input / 2-Wire MPU Clock Input Master Clock Input (MCLK) Digital Core VDD w PD Rev 4.1 November 2006 4 WM8734 PIN CONFIGURATION – QFN Production Data TOP VIEW ORDERING INFORMATION - QFN DEVICE TEMPERATURE RANGE PACKAGE 28-lead QFN (5x5x0.9mm) (Pb-free) 28-lead QFN (5x5x0.9mm) (Pb-free, tape and reel) MOISTURE SENSITIVITY LEVEL PEAK SOLDERING TEMPERATURE W M8734SEFL -25 to +85oC MSL 1 260°C W M8734SEFL/R Note: Reel quantity = 3,500 -25 to +85oC MSL 1 260°C w PD Rev 4.1 November 2006 5 WM8734 PIN DESCRIPTION - QFN PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 NAME MCLK NC DCVDD DGND DBVDD NC BCLK DACDAT DACLRC ADCDAT ADCLRC NC NC NC NC LOUT ROUT AVDD AGND VMID NC NC RLINEIN LLINEIN MODE CSB SDIN SCLK TYPE Digital Input Do Not Connect Supply Ground Supply Do Not Connect Digital Input/Output Digital Input Digital Input/Output Digital Output Digital Input/Output Do Not Connect Do Not Connect Do Not Connect Do Not Connect Analogue Output Analogue Output Supply Ground Analogue Output Do Not Connect Do Not Connect Analogue Input Analogue Input Digital Input Digital Input Digital Input/Output Digital Input DESCRIPTION Master Clock Input (MCLK) Test Pin, must be left unconnected Digital Core VDD Digital GND Digital Buffers VDD Test Pin, must be left unconnected Digital Audio Bit Clock, Pull Down, (see Note 1) DAC Digital Audio Data Input DAC Sample Rate Left/Right Clock. Pull Down (see Note 1) ADC Digital Audio Data Output ADC Sample Rate Left/Right Clock, Pull Down (see Note 1) Test Pin, must be left unconnected Test Pin, must be left unconnected Test Pin, must be left unconnected Test Pin, must be left unconnected Left Channel Line Output Right Channel Line Output Analogue VDD Analogue GND Mid-rail reference decoupling point Test Pin, must be left unconnected Test Pin, must be left unconnected Right Channel Line Input (AC coupled) Left Channel Line Input (AC coupled) Control Interface Selection, Pull Up (see Note 1) Production Data 3-Wire MPU Chip Select / 2-Wire MPU interface address selection, active low, Pull up (see Note 1) 3-Wire MPU Data Input / 2-Wire MPU Data Input 3-Wire MPU Clock Input / 2-Wire MPU Clock Input Note: It is recommended that the QFN ground paddle is connected to analogue ground on the application PCB. w PD Rev 4.1 November 2006 6 WM8734 ABSOLUTE MAXIMUM RATINGS Production Data 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 0.5465fs -3dB -0.5dB -0.1dB +/- 0.03dB -6dB Passband Ripple Stopband Stopband Attenuation Passband Passband Ripple Stopband Stopband Attenuation Table 22 Digital Filter Characteristics f > 0.5465fs 0.5465fs -50 dB f > 0.584fs +/- 0.03dB -6dB DAC Filter Type 1 (USB mode, 272fs or Normal mode operation) 0 0.5fs +/- 0.03 dB 0.4535fs 0.584fs -50 dB 0 0.5fs +/-0.03 dB 0.5465fs -60 3.7 10.4 21.6 0.416fs dB Hz f > 0.584fs +/- 0.05dB -6dB ADC Filter Type 1 (USB mode, 272fs or Normal mode operation) 0 0.5fs +/- 0.05 dB 0.4535fs 0.584fs -60 dB TEST CONDITIONS +/- 0.05dB -6dB MIN 0 0.5fs +/- 0.05 dB TYP MAX 0.416fs UNIT ADC Filter Type 0 (USB Mode, 250fs operation) DAC Filter Type 0 (USB mode, 250fs operation) Passband w PD Rev 4.1 November 2006 38 WM8734 TERMINOLOGY 1. 2. Stop Band Attenuation (dB) - the degree to which the frequency spectrum is attenuated (outside audio band) Pass-band Ripple – any variation of the frequency response in the pass-band region Production Data DAC FILTER RESPONSES 0.04 0 0.03 -20 0.02 Response (dB) Response (dB) 0.01 0 -0.01 -0.02 -40 -60 -80 -0.03 -100 0 0.5 1 1.5 Frequency (Fs) 2 2.5 3 -0.04 0 0.05 0.1 0.15 0.2 0.25 0.3 Frequency (Fs) 0.35 0.4 0.45 0.5 Figure 25 DAC Digital Filter Frequency Response –Type 1 Figure 26 DAC Digital Filter Ripple –Type 1 0.02 0 0.01 -20 0 Response (dB) Response (dB) -0.01 -0.02 -0.03 -0.04 -40 -60 -80 -0.05 -100 0 0.5 1 1.5 Frequency (Fs) 2 2.5 3 -0.06 0 0.05 0.1 0.15 Frequency (Fs) 0.2 0.25 Figure 27 DAC Digital Filter Frequency Response –Type 2 Figure 28 DAC Digital Filter Ripple –Type 2 ADC FILTER RESPONSES 0.02 0 0.01 -20 0 Response (dB) 0 0.5 1 1.5 Frequency (Fs) 2 2.5 3 Response (dB) -0.01 -0.02 -0.03 -0.04 -40 -60 -80 -0.05 -100 -0.06 0 0.05 0.1 0.15 0.2 0.25 0.3 Frequency (Fs) 0.35 0.4 0.45 0.5 Figure 29 ADC Digital Filter Frequency Response –Type 1 Figure 30 ADC Digital Filter Ripple –Type 1 w PD Rev 4.1 November 2006 39 WM8734 0.02 0 0.01 -20 0 Response (dB) Production Data Response (dB) -0.01 -0.02 -0.03 -0.04 -40 -60 -80 -0.05 -100 0 0.5 1 1.5 Frequency (Fs) 2 2.5 3 -0.06 0 0.05 0.1 0.15 Frequency (Fs) 0.2 0.25 Figure 31 ADC Digital Filter Frequency Response –Type 2 Figure 32 ADC Digital Filter Ripple –Type 2 ADC HIGH PASS FILTER The WM8734 has a selectable digital high pass filter to remove DC offsets. The filter response is characterised by the following polynomial. H(z) = 1 – z-1 1 – 0.9995 z-1 DIGITAL DE-EMPHASIS CHARACTERISTICS 0 0.4 0.3 -2 0.2 Response (dB) -4 Response (dB) 0.1 0 -0.1 -0.2 -6 -8 -0.3 -10 0 2000 4000 6000 8000 10000 Frequency (Fs) 12000 14000 16000 -0.4 0 2000 4000 6000 8000 10000 Frequency (Fs) 12000 14000 16000 Figure 33 De-Emphasis Frequency Response (32kHz) 0 Figure 34 De-Emphasis Error (32kHz) 0.4 0.3 -2 0.2 Response (dB) Response (dB) -4 0.1 0 -0.1 -0.2 -6 -8 -0.3 -10 0 5000 10000 Frequency (Fs) 15000 20000 -0.4 0 5000 10000 Frequency (Fs) 15000 20000 Figure 35 De-Emphasis Frequency Response (44.1kHz) Figure 36 De-Emphasis Error (44.1kHz) w PD Rev 4.1 November 2006 40 WM8734 0 0.4 0.3 -2 0.2 Production Data Response (dB) -4 Response (dB) 0.1 0 -0.1 -0.2 -6 -8 -0.3 -10 0 5000 10000 15000 Frequency (Fs) 20000 -0.4 0 5000 10000 15000 Frequency (Fs) 20000 Figure 37 De-Emphasis Frequency Response (48kHz) Figure 38 De-Emphasis Error (48kHz) w PD Rev 4.1 November 2006 41 WM8734 APPLICATIONS INFORMATION RECOMMENDED EXTERNAL COMPONENTS Production Data Figure 39 External Components Diagram Notes: 1. 2. 3. Diagram above is for SSOP package. QFN external components are the same. Where possible, it is recommended that NPO or COG type capacitors should be used for best performance. For added strength and heat dissipation, it is recommended that the GND_PADDLE (Pin 33) is connected to AGND. w PD Rev 4.1 November 2006 42 WM8734 MINIMISING POP NOISE AT THE ANALOGUE OUTPUTS Production Data To minimise any pop or click noise when the system is powered up or down, the following procedures are recommended. POWER UP SEQUENCE • • • • • Switch on power supplies. By default the WM8734 is in Standby Mode, the DAC is digitally muted and the Audio Interface and Outputs are all OFF. Set all required bits in the Power Down register (0Ch) to ‘0’; EXCEPT the OUTPD bit, this should be set to ‘1’ (Default). Set required values in all other registers except 12h (Active). Set the ‘Active’ bit in register 12h. The last write of the sequence should be setting OUTPD to ‘0’ (active) in register 0Ch, enabling the DAC signal path, free of any significant power-up noise. POWER DOWN SEQUENCE • • Set the OUTPD bit to ‘1’ (power down). Remove the WM8734 supplies. w PD Rev 4.1 November 2006 43 WM8734 PACKAGE DIMENSIONS (SSOP) DS: 20 PIN SSOP (7.2 x 5.3 x 1.75 mm) Production Data DM0015.C b 20 e 11 E1 E 1 10 GAUGE PLANE Θ D A A2 A1 -C0.10 C SEATING PLANE c L L1 0.25 Symbols A A1 A2 b c D e E E1 L L1 θ REF: MIN ----0.05 1.65 0.22 0.09 6.90 7.40 5.00 0.55 0 o Dimensions (mm) NOM --------1.75 0.30 ----7.20 0.65 BSC 7.80 5.30 0.75 1.25 REF o 4 JEDEC.95, MO -150 MAX 2.0 ----1.85 0.38 0.25 7.50 8.20 5.60 0.95 8 o NOTES: A. ALL LINEAR DIMENSIONS ARE IN MILLIMETERS. B. THIS DRAWING IS SUBJECT TO CHANGE WITHOUT NOTICE. C. BODY DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSION, NOT TO EXCEED 0.20MM. D. MEETS JEDEC.95 MO-150, VARIATION = AE. REFER TO THIS SPECIFICATION FOR FURTHER DETAILS. w PD Rev 4.1 November 2006 44 WM8734 PACKAGE DIMENSIONS (QFN) FL: 28 PIN QFN PLASTIC PACKAGE 5 X 5 X 0.9 mm BODY, 0.50 mm LEAD PITCH CORNER TIE BAR 5 22 D2 B D2/2 27 28 L SEE DETAIL A D INDEX AREA (D/2 X E/2) Production Data DM023.G 21 EXPOSED GROUND 6 PADDLE A 1 2 E2/2 A E2 E 15 7 SEE DETAIL B 14 e 13 B 8 b ccc M C A B 2X 2X aaa C aaa C BOTTOM VIEW ccc C (A3) 1 A 0.08 C SEATING PLANE TOP VIEW DETAIL A 1 bbb M C A B 28x b CORNER TIE BAR 5 0. 15 C SIDE VIEW DETAIL B DATUM L A1 1 e/2 TERMINAL TIP 0.210mm 0. 6 56 m m 28x K e EXPOSED GROUND PADDLE R 0. m 38 m L1 L1 R 1 Symbols A A1 A3 b D D2 E E2 e L L1 R K aaa bbb ccc REF: MIN 0.85 0 0.18 3.2 3.2 0.35 Dimensions (mm) NOM MAX 0.90 1.00 0.02 0.05 0.2 REF 0.23 0.30 5.00 BSC 3.3 3.4 5.00 BSC 3.3 3.4 0.5 BSC 0.4 0.45 0.1 NOTE 1 2 2 1 b(min)/2 0.20 Tolerances of Form and Position 0.15 0.10 0.10 JEDEC, MO-220, VARIATION VHHD-1 NOTES: 1. DIMENSION b APPLIED TO METALLIZED TERMINAL AND IS MEASURED BETWEEN 0.25 mm AND 0.30 mm FROM TERMINAL TIP. DIMENSION L1 REPRESENTS TERMINAL PULL BACK FROM PACKAGE SIDE WALL. MAXIMUM OF 0.1mm IS ACCEPTABLE. WHERE TERMINAL PULL BACK EXISTS, ONLY UPPER HALF OF LEAD IS VISIBLE ON PACKAGE SIDE WALL DUE TO HALF ETCHING OF LEADFRAME. 2. FALLS WITHIN JEDEC, MO-220 WITH THE EXCEPTION OF D2, E2: D2,E2: LARGER PAD SIZE CHOSEN WHICH IS JUST OUTSIDE JEDEC SPECIFICATION 3. ALL DIMENSIONS ARE IN MILLIMETRES 4. THIS DRAWING IS SUBJECT TO CHANGE WITHOUT NOTICE. 5. SHAPE AND SIZE OF CORNER TIE BAR MAY VARY WITH PACKAGE TERMINAL COUNT. CORNER TIE BAR IS CONNECTED TO EXPOSED PAD INTERNALLY 6. REFER TO APPLICATION NOTE WAN_0118 FOR FURTHER INFORMATION REGARDING PCB FOOTPRINTS AND QFN PACKAGE SOLDERING. w PD Rev 4.1 November 2006 45 WM8734 IMPORTANT NOTICE Production Data W olfson Microelectronics plc (“Wolfson”) products and services are sold subject to Wolfson’s terms and conditions of sale, delivery and payment supplied at the time of order acknowledgement. Wolfson warrants performance of its products to the specifications in effect at the date of shipment. Wolfson reserves the right to make changes to its products and specifications or to discontinue any product or service without notice. Customers should therefore obtain the latest version of relevant information from Wolfson to verify that the information is current. Testing and other quality control techniques are utilised to the extent Wolfson deems necessary to support its warranty. Specific testing of all parameters of each device is not necessarily performed unless required by law or regulation. In order to minimise risks associated with customer applications, the customer must use adequate design and operating safeguards to minimise inherent or procedural hazards. Wolfson is not liable for applications assistance or customer product design. The customer is solely responsible for its selection and use of Wolfson products. Wolfson is not liable for such selection or use nor for use of any circuitry other than circuitry entirely embodied in a Wolfson product. Wolfson’s products are not intended for use in life support systems, appliances, nuclear systems or systems where malfunction can reasonably be expected to result in personal injury, death or severe property or environmental damage. Any use of products by the customer for such purposes is at the customer’s own risk. Wolfson does not grant any licence (express or implied) under any patent right, copyright, mask work right or other intellectual property right of Wolfson covering or relating to any combination, machine, or process in which its products or services might be or are used. Any provision or publication of any third party’s products or services does not constitute 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. Wolfson is not liable for any unauthorised alteration of such information or for any reliance placed thereon. Any representations made, warranties given, and/or liabilities accepted by any person which differ from those contained in this datasheet or in Wolfson’s standard terms and conditions of sale, delivery and payment are made, given and/or accepted at that person’s own risk. Wolfson is not liable for any such representations, warranties or liabilities or for any reliance placed thereon by any person. ADDRESS: W olfson Microelectronics plc 26 Westfield Road Edinburgh EH11 2QB United Kingdom Tel :: +44 (0)131 272 7000 Fax :: +44 (0)131 272 7001 Email :: sales@wolfsonmicro.com w PD Rev 4.1 November 2006 46
WM8734_06 价格&库存

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