WM8524GEDT/R Wolfson Microelectronics, WM8524GEDT/R Datasheet
WM8524GEDT/R
Specifications of WM8524GEDT/R
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WM8524GEDT/R Summary of contents
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... Consumer digital audio applications requiring 2Vrms output − − − − − http://www.wolfsonmicro.com/enews WM8524 106dB SNR (‘A-weighted’) -89dB THD @ -1dBFS 2 S Games Consoles Set Top Box A/V Receivers DVD Players Digital TV Production Data, June 2010, Rev 4.0 Copyright ©2010 Wolfson Microelectronics plc ...
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WM8524 DESCRIPTION ....................................................................................................... 1 FEATURES............................................................................................................. 1 APPLICATIONS ..................................................................................................... 1 BLOCK DIAGRAM ................................................................................................. 1 TABLE OF CONTENTS ......................................................................................... 2 PIN CONFIGURATION ........................................................................................... 3 ORDERING INFORMATION .................................................................................. 3 PIN DESCRIPTION ................................................................................................ 4 ABSOLUTE MAXIMUM RATINGS ......................................................................... 5 RECOMMENDED OPERATING CONDITIONS ..................................................... 5 ...
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... PIN CONFIGURATION LINEVOUTL CPVOUTN CPCB LINEGND CPCA LINEVDD DACDAT LRCLK ORDERING INFORMATION ORDER CODE TEMPERATURE RANGE WM8524GEDT −40°C to +85°C WM8524GEDT/R −40°C to +85°C Note: Reel quantity = 2000 w LINEVOUTR AVDD VMID AGND AIFMODE MUTE MCLK BCLK PACKAGE MOISTURE SENSITIVITY LEVEL ...
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WM8524 PIN DESCRIPTION PIN NO NAME TYPE 1 Analogue Out LINEVOUTL Analogue Out 2 CPVOUTN 3 Analogue Out CPCB 4 Supply LINEGND 5 Analogue Out CPCA 6 Supply LINEVDD 7 Digital In DACDAT Digital In 8 LRCLK 9 Digital In ...
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Production Data 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 ...
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WM8524 ELECTRICAL CHARACTERISTICS Test Conditions LINEVDD=AVDD=3.3V, LINEGND=AGND=0V, T stated. PARAMETER Analogue Output Levels Output Level Load Impedance Load Capacitance DAC Performance Signal to Noise Ratio Dynamic Range Total Harmonic Distortion AVDD + LINEVDD Power Supply Rejection Ratio Channel Separation System ...
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Production Data POWER CONSUMPTION MEASUREMENTS Test Conditions LINEVDD=AVDD=3.3V, LINEGND=AGND=0V, T Off fs=48kHz, MCLK=256fs Standby Playback fs=96kHz, MCLK=256fs Standby Playback fs=192kHz, MCLK=128fs Standby Playback w =+25°C, Slave Mode, quiescent (no signal) A TEST CONDITIONS IAVDD (mA) No clocks applied 0.8 MUTE ...
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WM8524 SIGNAL TIMING REQUIREMENTS SYSTEM CLOCK TIMING Figure 1 System Clock Timing Requirements Test Conditions LINEVDD=AVDD=2.97~3.63V, LINEGND=AGND=0V, T PARAMETER Master Clock Timing Information MCLK cycle time MCLK high time MCLK low time MCLK duty cycle (t /t MCLKH MCLKL) w ...
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Production Data AUDIO INTERFACE TIMING – SLAVE MODE BCLK (input) t BCH LRCLK (input) DACDAT (input) Figure 2 Digital Audio Data Timing – Slave Mode Test Conditions LINEVDD=AVDD=2.97~3.63V, LINEGND=AGND=0V, T PARAMETER Audio Data Input Timing Information BCLK cycle time BCLK ...
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WM8524 POWER ON RESET CIRCUIT Figure 3 Internal Power on Reset Circuit Schematic The WM8524 includes an internal Power-On-Reset circuit, as shown in Figure 3, which is used to reset the DAC digital logic into a default state after power ...
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Production Data Test Conditions LINEVDD = AVDD = 3.3V AGND = LINEGND = 0V, T PARAMETER SYMBOL Power Supply Input Timing Information VDD level to POR defined (LINEVDD/AVDD rising) VDD level to POR rising edge V (VMID rising) VDD level ...
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WM8524 DEVICE DESCRIPTION INTRODUCTION The WM8524 provides high fidelity, 2Vrms ground referenced stereo line output from a single supply line with minimal external components. The integrated DC servo eliminates the requirement for external mute circuitry by minimising DC transients at ...
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Production Data AUDIO DATA FORMATS In Right Justified mode, the LSB is available on the last rising edge of BCLK before a LRCLK transition. frequency and sample rate, there may be unused BCLK cycles after each LRCLK transition. Figure 6 ...
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WM8524 Figure 8 I DIGITAL AUDIO DATA SAMPLING RATES The external master clock is applied directly to the MCLK input pin system where there are a number of possible sources for the reference clock recommended that ...
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Production Data HARDWARE CONTROL INTERFACE The device is configured according to logic levels applied to the hardware control pins as described in Table 4. PIN NAME MUTE ¯ ¯ ¯ ¯ ¯ AIFMODE Table 4 Hardware Control Pin Configuration MUTE ...
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WM8524 POWER UP AND DOWN CONTROL The MCLK, BCLK and MUTE this is summarised in Figure 9 below. Figure 9 Hardware Power Sequence Diagram Off to Enable To power up the device to enabled, start MCLK and BCLK and set ...
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Production Data POWER DOMAINS Figure 10 Power Domain Diagram POWER DOMAIN NAME DAC Power Supplies 3.3V ± 10% AVDD 3.3V ± 10% LINEVDD Internally Generated Power Supplies and References 1.65V ± 10% VMID -3.3V ± 10% CPVOUTN Table 5 Power ...
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WM8524 DIGITAL FILTER CHARACTERISTICS PARAMETER TEST CONDITIONS DAC Filter – 256fs to 1152fs ± 0.1dB Passband Passband Ripple Stopband Stopband attenuation f > 0.546fs Group Delay DAC Filter – 128fs and 192fs Passband ± 0.1dB Passband Ripple Stopband Stopband attenuation ...
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Production Data DAC FILTER RESPONSES 0 -20 -40 -60 -80 -100 -120 0 0.5 1 1.5 Frequency (Fs) Figure 11 DAC Digital Filter Frequency Response – 256fs to 1152fs Clock Modes 0 -20 -40 -60 -80 -100 0 0.1 0.2 ...
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WM8524 APPLICATIONS INFORMATION RECOMMENDED EXTERNAL COMPONENTS Figure 15 Recommended External Components Notes: 1. Wolfson recommend using a single, common ground plane. Where this is not possible, care should be taken to optimize split ground configuration for audio performance. 2. Charge ...
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Production Data RECOMMENDED ANALOGUE LOW PASS FILTER Figure 16 Recommended Analogue Low Pass Filter (one channel shown) An external single-pole RC filter is recommended if the device is driving a wideband amplifier. Other filter architectures may provide equally good results. ...
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WM8524 RELEVANT APPLICATION NOTES The following application notes, available from www.wolfsonmicro.com, may provide additional guidance for use of the WM8524. DEVICE PERFORMANCE: WTN0302 – WM8524 Recommended Power Sequence and Timing WAN0129 – Decoupling and Layout Methodology for Wolfson DACs, ADCs ...
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Production Data PACKAGE DIMENSIONS DT: 16 PIN TSSOP (5.0 x 4.4 x 1.0 mm Dimensions Symbols (mm) MIN NOM A ----- A 0. 0.80 1. 0.19 c 0.09 ...
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... WM8524 IMPORTANT NOTICE Wolfson 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 ...