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.
Data Sheet, Rev. 0, 5/10
|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|
|AN-951: Using Hardware Controls with SigmaDSP GPIO Pins (pdf, 439 kB)||Application Notes|
|AN-1056: Capless Headphone Virtual Ground Short-Circuit Protection for the ADAU1361 and ADAU1761 Low Power Codecs (pdf, 77 kB)||Application Notes|
|AN-1006: Using the EVAL-ADUSB2EBZ (pdf, 349 kB)||Application Notes|
|CN-0078: iMEMS Digital Microphone Simplifies the Interface to a SigmaDSP Audio Codec (pdf)||Circuit Note|
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.
|VisualDSP++ 5.0 Linker and Utilities Manual (Revision 3.5, January 2011) (pdf, 2290 kB) | Request a CD||Software Manuals|
|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|
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.
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