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ADAU1772 Datasheet(PDF) 1 Page - Analog Devices

Part # ADAU1772
Description  Four ADC, Two DAC Low Power Codec
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADAU1772 Datasheet(HTML) 1 Page - Analog Devices

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Four ADC, Two DAC Low Power Codec
with Audio Processor
Data Sheet
ADAU1772
Rev. C
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2012–2014 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
FEATURES
Programmable audio processing engine
192 kHz processing path
Biquad filters, limiters, volume controls, mixing
Low latency, 24-bit ADCs and DACs
102 dB SNR (signal through PGA and ADC
with A-weighted filter)
107 dB combined SNR (signal through DAC and headphone
with A-weighted filter)
Serial port sample rates from 8 kHz to 192 kHz
38 μs analog-to-analog latency
4 single-ended analog inputs—configurable as microphone
or line inputs
Dual stereo digital microphone inputs
Stereo analog audio output—single-ended or differential,
configurable as either line output or headphone driver
PLL supporting any input clock rate from 8 MHz to 27 MHz
Full-duplex, asynchronous sample rate converters (ASRCs)
Power supplies
Analog and digital I/O of 1.8 V to 3.3 V
Digital signal processing (DSP) core of 1.1 V to 1.8 V
Low power (15 mW for typical noise cancelling solution)
I2C and SPI control interfaces, self-boot from I2C EEPROM
7 MP pins supporting dual stereo digital microphone inputs,
stereo PDM output, mute, DSP bypass, push-button
volume controls, and parameter bank switching
APPLICATIONS
Noise cancelling handsets, headsets, and headphones
Bluetooth ANC handsets, headsets, and headphones
Personal navigation devices
Digital still and video cameras
GENERAL DESCRIPTION
The ADAU1772 is a codec with four inputs and two outputs that
incorporates a digital processing engine to perform filtering,
level control, signal level monitoring, and mixing. The path
from the analog input to the DSP core to the analog output is
optimized for low latency and is ideal for noise cancelling headsets.
With the addition of just a few passive components, a crystal,
and an EEPROM for booting, the ADAU1772 provides a
complete headset solution.
FUNCTIONAL BLOCK DIAGRAM
Figure 1.
MICROPHONE
BIAS GENERATORS
MICBIAS0
MICBIAS1
CM
ADC
MODULATOR
ADC
DECIMATOR
AIN0REF
AIN0
PGA
ADC
MODULATOR
ADC
DECIMATOR
AIN1REF
AIN1
PGA
ADC
MODULATOR
AIN2REF
AIN2
PGA
ADC
MODULATOR
AIN3REF
AIN3
PGA
ADC
DECIMATOR
ADC
DECIMATOR
DMIC0_1/MP4
DMIC2_3/MP5
DIGITAL
MICROPHONE
INPUTS
INPUT/OUTPUT
SIGNAL
ROUTING
DSP CORE:
BIQUAD FILTERS,
LIMITERS,
VOLUME CONTROLS,
MIXING
I2C/SPI CONTROL
INTERFACE AND SELF-BOOT
BIDIRECTIONAL
ASRCS
SERIAL
INPUT/
OUTPUT
PORT
LDO
REGULATOR
POWER
MANAGEMENT
PLL
CLOCK
OSCILLATOR
DAC_SDATA/MP0
ADC_SDATA1/CLKOUT/MP6
XTALI/MCLKIN
XTALO
ADC_SDATA0/PDMOUT/MP1
BCLK/MP2
LRCLK/MP3
DAC
DAC
STEREO PDM
MODULATOR
ADAU1772
HPOUTLP/LOUTLP
HPOUTLN/LOUTLN
HPOUTRP/LOUTRP
HPOUTRN/LOUTRN


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