WM8711CBLGEFL/V Cirrus Logic

WM8711BL w Ultra-Small Audio DAC with Headphone Amplifier DESCRIPTION FEATURES Audio Performance The WM8711BL is an ultra-small, low power stereo DAC - DAC SNR 97dB (A weighted) at AVDD = 3.3V with an integrated headphone driver. It is designed - DAC SNR 90dB (A weighted) at AVDD = 1.8V specifically for portable audio systems requiring hi-fi stereo Low Power Headphone Playback playback through headphones. - Down to 6mW at 1.8V Stereo 24-bit multi-bit sigma delta DACs are used with - 1.42 3.6V Digital Supply Operation oversampling digital interpolation filters. Digital audio input - 1.8 3.6 V Analogue Supply Operation word lengths from 16-32 bits and sampling rates from 8kHz DAC Sampling Frequency: 8kHz 96kHz to 96kHz are supported. 2 or 3-Wire MPU Serial Control Interface Programmable Audio Data Interface Modes Stereo audio outputs are buffered for driving headphones 2 - I S, Left, Right Justified or DSP from a programmable volume control, line level outputs are - 16/20/24/32 bit Word Lengths also provided along with anti-thump mute and power - Master or Slave Clocking Mode up/down circuitry. Stereo Audio Outputs The device is controlled via a 2 or 3 wire serial interface. Output Volume and Mute Controls The interface provides access to all features including Highly Efficient Headphone Driver volume controls, mutes, de-emphasis and extensive power 24-lead QFN (4x4x0.9 mm) package management facilities. The device is available in an ultra- small 24-lead QFN (4x4x0.9 mm Body) package. APPLICATIONS A USB clocking mode is provided where all audio rates can be derived from a single 12MHz or 24MHz MCLK, saving on Multimedia Mobile Phones the need for a PLL or multiple crystals. Portable MP3 / CD Players BLOCK DIAGRAM HPVDD WM8711B CONTROL INTERFACE HPGND RLINEIN MUTE H/P VOL/ RHPOUT MUTE DRIVER +6 to -73dB DAC 1 dB Steps DACDAT ROUT DIGITAL DACLRC FILTERS LOUT BCLK +6 to -73dB DAC 1 dB Steps VOL/ H/P LHPOUT MUTE DRIVER MUTE CLKIN CLKIN DIVIDER DIVIDER OSC LLINEIN (Div x1, (Div x1, x2) x2) WOLFSON MICROELECTRONICS plc Production Data, December 2011, Rev 4.2 To receive regular email updates, sign up at WM8711BL Production Data TABLE OF CONTENTS 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 ELECTRICAL CHARACTERISTICS ..................................................................... 6 TERMINOLOGY .................................................................................................... 7 POWER CONSUMPTION ...................................................................................... 8 HEADPHONE SNR VS AVDD ............................................................................... 9 ANALOGUE SUPPLY CURRENT VS AVDD ........................................................ 9 MASTER CLOCK TIMING ............................................................................................... 10 DIGITAL AUDIO INTERFACE MASTER MODE .......................................................... 10 DIGITAL AUDIO INTERFACE SLAVE MODE ............................................................. 11 MPU INTERFACE TIMING .............................................................................................. 11 DEVICE DESCRIPTION ...................................................................................... 13 INTRODUCTION .............................................................................................................. 13 AUDIO SIGNAL PATH ..................................................................................................... 14 DEVICE OPERATION ...................................................................................................... 19 AUDIO DATA SAMPLING RATES .................................................................................. 27 ACTIVATING DSP AND DIGITAL AUDIO INTERFACE ................................................. 30 SOFTWARE CONTROL INTERFACE ............................................................................ 30 POWER DOWN MODES ................................................................................................. 32 REGISTER MAP .............................................................................................................. 34 DAC FILTER RESPONSES ................................................................................. 38 DIGITAL DE-EMPHASIS CHARACTERISTICS .................................................. 40 RECOMMENDED EXTERNAL COMPONENTS ................................................. 41 PACKAGE DIMENSIONS QFN ........................................................................ 42 IMPORTANT NOTICE ......................................................................................... 43 ADDRESS: ....................................................................................................................... 43 REVISION HISTORY ........................................................................................... 44 PD, Rev 4.2, December 2011 w 244