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ADAU1461:  SigmaDSP Stereo, Automotive Low Power, 96 kHz, 24-Bit Audio Codec with Integrated PLL

Product Details

Product Status:Recommended for New Designs

The ADAU1461 is a low power, stereo audio codec with integrated digital audio processing that supports stereo 48 kHz record and playback at 35 mW from a 3.3 V analog supply. The stereo audio ADCs and DACs support sample rates from 8 kHz to 96 kHz as well as a digital volume control.

The SigmaDSP® core features 28-bit processing (56-bit double precision). The processor allows system designers to compensate for the real-world limitations of microphones, speakers, amplifiers, and listening environments, resulting in a dramatic improvement in the perceived audio quality through equalization, multiband compression, limiting, and third-party branded algorithms.

The SigmaStudio™ graphical development tool is used to program the ADAU1461. This software includes audio processing blocks such as filters, dynamics processors, mixers, and low level DSP functions for fast development of custom signal flows.

The record path includes an integrated microphone bias circuit and six inputs. The inputs can be mixed and muxed before the ADC, or they can be configured to bypass the ADC. The ADAU1461 includes a stereo digital microphone input.

The ADAU1461 includes five high power output drivers (two differentials and three single-ended), supporting stereo head-phones, an earpiece, or other output transducer. AC-coupled or capless configurations are supported. Individual fine level controls are supported on all analog outputs. The output mixer stage allows for flexible routing of audio.

Applications

  • Automotive head units
  • Automotive amplifiers
  • Navigation systems
  • Rear-seat entertainment systems
  • Data Sheet, Rev. 0, 5/10

FEATURES and BENEFITS

  • SigmaDSP 28-/56-bit, 50 MIPS digital audio processor
  • Fully programmable with SigmaStudio graphical tool
  • 24-bit stereo audio ADC and DAC: >98 dB SNR
  • Sampling rates from 8 kHz to 96 kHz
  • Low power: 17 mW record, 18 mW playback, 48 kHz
  • 6 analog input pins, configurable for single-ended or differential inputs
  • Flexible analog input/output mixers
  • Stereo digital microphone input
  • Analog outputs: 2 differential stereo, 2 single-ended stereo, 1 mono headphone output driver
  • PLL supporting input clocks from 8 MHz to 27 MHz
  • Analog automatic level control (ALC)
  • Microphone bias reference voltage
  • Analog and digital I/O: 3.3 V
  • I2C and SPI control interfaces
  • Digital audio serial data I/O: stereo and time-division multiplexing (TDM) modes
  • Software-controllable clickless mute
  • GPIO pins for digital controls and outputs
  • 32-lead, 5 mm × 5 mm LFCSP
  • −40°C to +105°C operating temperature range
  • Qualified for automotive applications
  • Digital Microphone inputs, headphone amp, Frac PLL

Functional Block Diagram for ADAU1461

Documentation

Title Content Type File Type
ADAU1461: SigmaDSP Stereo, Low Power, 96 kHz, 24-Bit Audio Codec with Integrated PLL Data Sheet (Rev 0, 06/2010) (pdf, 2018 kB) Data Sheets PDF
AN-951: Using Hardware Controls with SigmaDSP GPIO Pins  (pdf, 439 kB) Application Notes PDF
AN-1056: Capless Headphone Virtual Ground Short-Circuit Protection for the ADAU1361 and ADAU1761 Low Power Codecs  (pdf, 77 kB) Application Notes PDF
AN-1006: Using the EVAL-ADUSB2EBZ  (pdf, 349 kB) Application Notes PDF
CN-0078: iMEMS Digital Microphone Simplifies the Interface to a SigmaDSP Audio Codec  (pdf) Circuit Note PDF
Sigma Studio Overview
Familiar audio processing blocks can be wired together as in a schematic, and the compiler generates DSP-ready code and a control surface for setting and tuning parameters.
Videos HTML
VisualDSP++ 5.0 Linker and Utilities Manual (Revision 3.5, January 2011)  (pdf, 2290 kB) | Request a CD Software Manuals PDF
Which SigmaDSP is right for my application? FAQs/RAQs HTML
Which SigmaDSP parts are qualified for automotive applications? FAQs/RAQs HTML
What evaluation boards are available for the SigmaDSP processors? FAQs/RAQs HTML
What advanced algorithms are available for SigmaDSP? FAQs/RAQs HTML
What is needed to boot a SigmaDSP processor? FAQs/RAQs HTML
What is the processing power and RAM sizes of the different SigmaDSPs? FAQs/RAQs HTML
How can I program and tune my target application using SigmaStudio? FAQs/RAQs HTML
When should I use double precision and when should I use single precision filters? FAQs/RAQs HTML
How do I protect my SigmaDSP design against power supply overvoltage and ESD? FAQs/RAQs HTML
How can I get a copy of SigmaStudio? FAQs/RAQs HTML
I already have a copy of SigmaStudio. How can I get the latest version? FAQs/RAQs HTML
Where can I find a description of the changes made in the latest version of SigmaStudio? FAQs/RAQs HTML
What are the PC requirements for SigmaStudio? FAQs/RAQs HTML
What documentation is available for SigmaStudio? FAQs/RAQs HTML
Can I use SigmaStudio without hardware connected? FAQs/RAQs HTML
How can I write my own algorithms in SigmaStudio? FAQs/RAQs HTML
After I link-compile-download my project, the bar at the bottom of SigmaStudio turns green. Does this mean my program downloaded to the DSP successfully? FAQs/RAQs HTML
How can I check that I have proper communication between SigmaStudio and the SigmaDSP hardware? FAQs/RAQs HTML
How do I change the sampling rate of my design in SigmaStudio? FAQs/RAQs HTML
Where can I see how much of the SigmaDSP resources my project consumes? FAQs/RAQs HTML
My signal flow is running out of instructions. What can I do to save resources? FAQs/RAQs HTML
I can't use the maximum delay memory in my project. What's happening? FAQs/RAQs HTML
When the signal input to my compressor is above 6 dB, the compression stops and my signal starts increasing. What's happening? FAQs/RAQs HTML
How can I eliminate pops when changing the delay parameter at run-time? FAQs/RAQs HTML
My application requires that I use multiple blocks that generate many addresses that I then have to map to my microcontroller code. Can I fix specific memory addresses for specific blocks to avoid all this mapping overhead? FAQs/RAQs HTML
How can I tune my own hardware design using SigmaStudio? FAQs/RAQs HTML
Where can I get further support for the SigmaDSP? FAQs/RAQs HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADAU1361/ADAU1761 IBIS Models IBIS Models HTML
Firmware Loader for SigmaDSPs Device Drivers HTML
ADAU1361 Sound CODEC Linux Driver (Wiki Site) Device Drivers HTML

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

ADAU1461 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADAU1461WBCPZ Status: Production LFCSP:LEADFRM CHIP SCALE 32 Auto Tray, 490 $5.41 $4.89 Y  Material Info Notify Me Purchase Sample
ADAU1461WBCPZ-R7 Status: Production LFCSP:LEADFRM CHIP SCALE 32 Auto Reel, 1500 - $4.89 Y  Material Info Notify Me Purchase
ADAU1461WBCPZ-RL Status: Production LFCSP:LEADFRM CHIP SCALE 32 Auto Reel, 5000 - $4.89 Y  Material Info Notify Me Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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