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PDF WM1811A Data sheet ( Hoja de datos )
| Número de pieza | WM1811A | |
| Descripción | Multi-Channel Audio Hub CODEC | |
| Fabricantes | Wolfson Microelectronics | |
| Logotipo |  |
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WM1811A
Multi-Channel Audio Hub CODEC for Smartphones
DESCRIPTION
FEATURES
The WM1811A[1] is a highly integrated ultra-low power hi-fi
CODEC designed for smartphones and other portable devices
rich in multimedia features.
An integrated stereo Class D speaker driver and Class W
headphone driver minimize power consumption during audio
playback.
The device requires only two voltage supplies, with all other
internal supply rails generated from integrated LDOs.
Stereo full duplex asynchronous sample rate conversion and
multi-channel digital mixing combined with powerful analogue
mixing allow the device to support a huge range of different
architectures and use cases.
A programmable parametric EQ provides speaker compensation
in the digital playback paths. The dynamic range controller can
be used in record or playback paths for maintaining a constant
signal level, maximizing loudness and protecting speakers
against overloading and clipping.
A smart digital microphone interface provides power regulation,
a low jitter clock output and decimation filters for up to two digital
microphones. Microphone activity detection with interrupt is
available.Low power jack detection is supported via a dedicated
input pin. Impedance sensing and measurement is provided for
external accessory / push-button detection.
Fully differential internal architecture and on-chip RF noise filters
ensure a very high degree of noise immunity. Active ground loop
noise rejection and DC offset correction help prevent pop noise
and suppress ground noise on the headphone outputs.
24-bit 2-channel hi-fi DAC and 2-channel hi-fi ADC
100dB SNR during DAC playback (‘A’ weighted)
Smart MIC interface
- Power, clocking and data input for up to two digital MICs
- High performance analogue MIC interface
- MIC activity detect & interrupt allows processor to sleep
- Low power jack detection support
- Impedance sensing for accessory / push-button detection
2W stereo (2 x 2W) Class D speaker driver
Capless Class W headphone drivers
- Integrated charge pump
- 5.3mW total power for DAC playback to headphones
4 Line outputs (single-ended or differential)
BTL Earpiece driver
Digital audio interfaces for multi-processor architecture
- Asynchronous stereo duplex sample rate conversion
- Powerful mixing and digital loopback functions
ReTuneTM Mobile 5-band, 4-channel parametric EQ
Dynamic range controller
Dual FLL provides all necessary clocks
- Self-clocking modes allow processor to sleep
- All standard sample rates from 8kHz to 96kHz
Active noise reduction circuits
- DC offset correction removes pops and clicks
- Ground loop noise cancellation
Integrated LDO regulators
80-ball W-CSP package (4.158 x 3.876 x 0.607mm)
APPLICATIONS
Smartphones and music phones
Portable navigation
Tablets, eBooks
Portable Media Players
WOLFSON MICROELECTRONICS plc
[1] This product is protected by Patents US 7,622,984, US 7,626,445, and GB 2,469,345
Production Data, August 2014, Rev 4.2
Copyright 2014 Wolfson Microelectronics plc
1 page  
Production Data
WM1811A
BCLK AND LRCLK CONTROL....................................................................................................................................................189
CONTROL INTERFACE CLOCKING ..........................................................................................................................................190
FREQUENCY LOCKED LOOP (FLL) ..........................................................................................................................................190
FREE-RUNNING FLL CLOCK.....................................................................................................................................................196
GPIO OUTPUTS FROM FLL .......................................................................................................................................................197
EXAMPLE FLL CALCULATION...................................................................................................................................................198
EXAMPLE FLL SETTINGS..........................................................................................................................................................199
SAMPLE RATE CONVERSION............................................................................................... 200
SAMPLE RATE CONVERTER 1 (SRC1) ....................................................................................................................................200
SAMPLE RATE CONVERTER 2 (SRC2) ....................................................................................................................................200
SAMPLE RATE CONVERTER RESTRICTIONS ........................................................................................................................201
SAMPLE RATE CONVERTER CONFIGURATION ERROR INDICATION .................................................................................201
CONTROL INTERFACE .......................................................................................................... 202
POP SUPPRESSION CONTROL............................................................................................ 205
DISABLED LINE OUTPUT CONTROL........................................................................................................................................205
LINE OUTPUT DISCHARGE CONTROL ....................................................................................................................................206
VMID REFERENCE DISCHARGE CONTROL............................................................................................................................206
INPUT VMID CLAMPS ................................................................................................................................................................206
LDO REGULATORS ................................................................................................................ 207
REFERENCE VOLTAGES AND MASTER BIAS .................................................................... 209
POWER MANAGEMENT......................................................................................................... 211
THERMAL SHUTDOWN.......................................................................................................... 215
POWER ON RESET ................................................................................................................ 216
SOFTWARE RESET AND DEVICE ID.................................................................................... 218
REGISTER MAP ......................................................................................................... 219
REGISTER BITS BY ADDRESS ............................................................................................. 230
APPLICATIONS INFORMATION ............................................................................... 312
RECOMMENDED EXTERNAL COMPONENTS..................................................................... 312
AUDIO INPUT PATHS.................................................................................................................................................................312
HEADPHONE OUTPUT PATH....................................................................................................................................................313
EARPIECE DRIVER OUTPUT PATH..........................................................................................................................................314
LINE OUTPUT PATHS ................................................................................................................................................................314
POWER SUPPLY DECOUPLING ...............................................................................................................................................315
CHARGE PUMP COMPONENTS ...............................................................................................................................................316
MICROPHONE BIAS CIRCUIT ...................................................................................................................................................316
EXTERNAL ACCESSORY DETECTION COMPONENTS ..........................................................................................................318
CLASS D SPEAKER CONNECTIONS ........................................................................................................................................320
RECOMMENDED EXTERNAL COMPONENTS DIAGRAM .......................................................................................................321
DIGITAL AUDIO INTERFACE CLOCKING CONFIGURATIONS ........................................... 323
PCB LAYOUT CONSIDERATIONS......................................................................................... 326
CLASS D LOUDSPEAKER CONNECTION ................................................................................................................................326
PACKAGE DIMENSIONS........................................................................................... 327
IMPORTANT NOTICE ................................................................................................ 328
ADDRESS: ............................................................................................................................... 328
REVISION HISTORY .................................................................................................. 329
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PD, August 2014, Rev 4.2
5
5 Page 
Production Data
WM1811A
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 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-020 for Moisture Sensitivity to determine acceptable storage
conditions prior to surface mount assembly. These levels are:
MSL1 = unlimited floor life at <30C / 85% Relative Humidity. Not normally stored in moisture barrier bag.
MSL2 = out of bag storage for 1 year at <30C / 60% Relative Humidity. Supplied in moisture barrier bag.
MSL3 = out of bag storage for 168 hours at <30C / 60% Relative Humidity. Supplied in moisture barrier bag.
The Moisture Sensitivity Level for each package type is specified in Ordering Information.
CONDITION
MIN MAX
Supply voltages (AVDD1, DBVDD2, DBVDD3)
Supply voltages (AVDD2, DCVDD, DBVDD1)
-0.3V
-0.3V
+4.5V
+2.5V
Supply voltages (CPVDD)
Supply voltages (SPKVDD1, SPKVDD2, LDO1VDD)
Voltage range digital inputs (DBVDD1 domain)
-0.3V
-0.3V
AGND -0.3V
+2.2V
+7.0V
DBVDD1 +0.3V
Voltage range digital inputs (DBVDD2 domain)
Voltage range digital inputs (DBVDD3 domain)
AGND -0.3V
AGND -0.3V
DBVDD2 +0.3V
DBVDD3 +0.3V
Voltage range digital inputs (DMICDAT)
Voltage range analogue inputs(AVDD1 domain)
Voltage range analogue inputs (MICDET, LINEOUTFB)
AGND -0.3V
AGND -0.3V
AGND -0.3V
AVDD1 +0.3V
AVDD1 +0.3V
AVDD1 +0.3V
Voltage range analogue inputs (HPOUT1FB)
Voltage range analogue inputs (JACKDET)
See note 1
AGND -0.3V
CPVOUTN - 0.3V
AGND +0.3V
AVDD2 +0.3V
Ground (DGND, CPGND, SPKGND1, SPKGND2, REFGND, HP2GND)
Operating temperature range, TA
Junction temperature, TJMAX
Storage temperature after soldering
AGND -0.3V
-40ºC
-40ºC
-65ºC
AGND +0.3V
+85ºC
+150ºC
+150ºC
Notes:
1. CPVOUTN is an internal supply rail, generated by the WM1811A Charge Pump. The CPVOUTN voltage may vary between
AGND and -CPVDD.
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PD, August 2014, Rev 4.2
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet WM1811A.PDF ] | |
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