Mono DAC. WM9081 Datasheet

WM9081 DAC. Datasheet pdf. Equivalent

Part WM9081
Description Mono DAC
Feature WM9081 Mono DAC with 2.6W Class AB/D Speaker Driver, Dynamic Range Controller and ReTune™ Mobile Pa.
Manufacture Cirrus Logic
Datasheet
Download WM9081 Datasheet



WM9081
WM9081
Mono DAC with 2.6W Class AB/D Speaker Driver, Dynamic
Range Controller and ReTune™ Mobile Parametric Equalizer
DESCRIPTION
The WM9081 is designed to provide high power output at
low distortion levels in space-constrained portable
applications.
ReTuneTM Mobile Parametric EQ with fully programmable
coefficients is integrated for optimization of speaker
characteristics. Programmable dynamic range control is also
available for maximizing loudness, protecting speakers from
clipping and preventing premature shutdown due to battery
droop.
Digital input enables the power drivers to be located close to
the speakers in multi-channel systems without the need for
troublesome long analogue connections. Location of the
power drivers close to the speakers also removes the need
for bulky and expensive class D filters and reduces PCB
track lengths, minimising emissions. The digital input can
also help to minimise crosstalk to the speaker output
signal from high gain microphone inputs, enhancing stability
and reducing the risk of ‘howling’ during speakerphone
operation.
Four control interface addresses and four-channel TDM are
supported to allow multiple devices to be configured and
driven independently.
The device is controlled via a standard 2-wire, 3-wire, or 4-
wire control interface or by hardware control pins.
BLOCK DIAGRAM
FEATURES
High-power, high performance DAC and speaker driver
92dB SNR (‘A-weighted’) in Class D mode
97dB SNR (‘A-weighted’) in Class AB mode
<0.05% THD+N @0.5W continuous into 4Ω (Class D)
<0.10% THD+N @2W continuous into 4Ω (Class D)
2.6W maximum peak power
ReTuneTM Mobile Parametric Equalizer
Fully programmable filter coefficients
Programmable dynamic range controller
Boosts small signals to maximise loudness
Protects against battery droop and clipping
Speaker common mode boost
Maximises power for a given SPKVDD/AVDD ratio
Low power FLL
Provides all necessary internal clocks
32kHz to 27MHz input frequency
All common sample rates from 8kHz to 96kHz supported
Standard 2-wire, 3-wire, 4-wire and hardware control
modes
Data formats: LJ, RJ, I2S, DSP, all with TDM support
Thermal shutdown interrupt
4x4 COL package (0.45mm lead pitch)
Operating temperature range: -40°C to 85°C
APPLICATIONS
Portable navigation systems
Mobile phones
Flat panel TVs
IN1
IN2
___
CS/ADDR1/4FS
SCLK
SDIN/ENA
SDOUT/ADDR0
SCIM/CHANNEL
SWMODE
___
IRQ
CONTROL
INTERFACE
0dB / -6dB
0dB / -6dB
DBVDD DGND DCVDD
SPKVDD SPKGND
+6dB to -57dB,
1dB steps
LINEOUT
DIGITAL FILTERS
VOLUME
CONTROL
PARAMETRIC EQ
DYNAMIC RANGE
CONTROLLER
DAC
MIXER
+6dB to -57dB,
1dB steps SPKOUTP
Speaker Boost
+5.1dB to 0dB
SPKOUTN
DACDAT
BCLK
LRCLK
MCLK
DIGITAL AUDIO
INTERFACE
CLOCK
CONTROL
FLL
WM9081
Voltage
Reference
AVDD
VMIDC
AGND
http://www.cirrus.com
Copyright Cirrus Logic, Inc., 20082016
(All Rights Reserved)
Rev 4.0
DEC ‘16



WM9081
WM9081
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
COMMON TEST CONDITIONS ................................................................................................. 6
AUDIO DAC ............................................................................................................................... 6
DIGITAL INTERFACES.............................................................................................................. 8
CLOCKING AND TIMING........................................................................................................... 8
TYPICAL POWER CONSUMPTION............................................................................... 9
COMMON TEST CONDITIONS ................................................................................................. 9
POWER CONSUMPTION MEASUREMENTS........................................................................... 9
TYPICAL PERFORMANCE DATA ............................................................................... 11
SPEAKER CLASS D INTO 4Ω + 10H .................................................................................... 11
SPEAKER CLASS D INTO 8Ω + 10H .................................................................................... 11
SIGNAL TIMING REQUIREMENTS ............................................................................. 12
SYSTEM CLOCK TIMING........................................................................................................ 12
AUDIO INTERFACE TIMING MASTER MODE .................................................................... 13
AUDIO INTERFACE TIMING SLAVE MODE........................................................................ 14
CONTROL INTERFACE TIMING 2-WIRE MODE................................................................. 15
CONTROL INTERFACE TIMING 3-WIRE MODE................................................................. 16
CONTROL INTERFACE TIMING 4-WIRE MODE................................................................. 17
DEVICE DESCRIPTION ............................................................................................... 18
INTRODUCTION ...................................................................................................................... 18
CONTROL INTERFACE (SOFTWARE MODE) ....................................................................... 19
CONTROL INTERFACE (HARDWARE MODE) ...................................................................... 24
CONTROL WRITE SEQUENCER............................................................................................ 27
POWER ON RESET CIRCUIT ................................................................................................. 30
DYNAMIC RANGE CONTROLLER (DRC) .............................................................................. 32
RETUNE MOBILE PARAMETRIC EQUALIZER (EQ).............................................................. 37
DIGITAL TO ANALOGUE CONVERTER (DAC) ...................................................................... 40
SIGNAL PATH CONTROL ....................................................................................................... 42
ANALOGUE OUTPUTS ........................................................................................................... 44
POP SUPPRESSION CONTROL ............................................................................................ 47
DIGITAL AUDIO INTERFACE.................................................................................................. 48
DIGITAL AUDIO INTERFACE CONTROL ............................................................................... 54
CLOCKING AND SAMPLE RATES.......................................................................................... 58
THERMAL SHUTDOWN .......................................................................................................... 67
INTERRUPTS .......................................................................................................................... 68
REFERENCE VOLTAGES AND MASTER BIAS ..................................................................... 70
POWER MANAGEMENT ......................................................................................................... 72
CHIP RESET AND ID............................................................................................................... 73
2 Rev 4.0





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