ADAU1761

SigmaDSP® Stereo, Low Power, 96 kHz, 24-Bit Audio Codec with Integrated PLL
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Product Details

The ADAU1761 is a low power, stereo audio codec with integrated digital audio processing that supports stereo 48 kHz record and playback at 14 mW from a 1.8 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 ADAU1761. 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 ADAU1761 includes a stereo digital microphone input.

The ADAU1761 includes five high power output drivers (two differential 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

  • Smartphones / Multimedia phones
  • Digital Still Cameras / Digital Video Cameras
  • Portable Media Players/ Portable Audio Players
  • Phone accessories products

Product Lifecycle

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At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits

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Product Details

This page contains evaluation board documentation and ordering information for evaluating the ADAU1761.

ADSP-BF706 EZ-KIT MINI Circuit Diagram

Product Details

Analog Devices has developed a low cost, low power DSP evaluation platform targeting an array of real-time applications. The ADSP-BF706 EZ-KIT Mini® leverages the latest entry within the industry-leading, low power Blackfin® processor family as well as ADI’s optimized development tools and third party software deliverables—including innovative embedded audio design with Audio Weaver® from DSP Concepts. With on-board, high quality audio connectivity, multiple expansion options, and an integrated debug agent, the EZ-KIT Mini offers designers a complete small form factor, low cost starter platform for multiple applications.


The ADSP-BF706 Blackfin processor is a high performance DSP that delivers a class-leading 800 MMACS of processing power at less than 100 mW. With glueless connectivity options including USB and over 1 MB of internal SRAM, this reduces BOM cost and eliminates the need for external memory in many applications. Using the enhanced Blackfin+ core, the combination of performance, power efficiency, memory integration, sophisticated security, and great value, allows designers to incorporate advanced 16- and 32-bit processing into a wide range of new power sensitive use cases.


Target ADSP-BF70x applications include:
  • Portable audio, DJ equipment, and effects
  • Automotive audio and sensors
  • Portable communications
  • Military and aerospace
  • Portable healthcare
  • Intelligent lighting and occupancy detection*
  • Industrial imaging and biometrics*
* For an advanced imaging-based starter system, please refer to ADI’s ADSP-BF707 BLIP

Product Details

The Analog Devices USBi “USB Interface” (EVAL-ADUSB2EBZ) board is the interface between your PC's USB port and SigmaDSP hardware's data input pins. This interface can be used with any evaluation board which includes an External SPI/I²C header (Aardvark Header). The EVAL-ADUSB2EBZ board is capable of both SPI and I²C communication (which is user selectable) and can supply IOVDD of either 3.3V or 1.8V.The USBi interface is powered from the computer's USB port.

To Install the USBi Board:
  • Connect the USB cable to the USBi Board a spare USB port on your PC.
  • The Windows “Found New Hardware Wizard” will launch.
  • Choose “Install from a list or a specific location” and click “Next”.
  • Select “Search for the best driver in these locations” and Check the box for “Include this location in the search.”
  • Press the “Browse” button and locate the appropriate driver file in the SigmaStudio application folder (default folder is C:\Program Files\Analog Devices Inc\Sigma Studio\USB drivers): Select the CyUSB.inf file.
  • Click “Continue Anyway” if you're prompted with “This software has not passed Windows Logo testing.”
Using USBi in SigmaStudio:
To communication between SigmaStudio and the USBi board, a communication channel block must be added to the Schematic design. To locate the block, select the Hardware Configuration Tab, int the ToolBox or Tree ToolBox window choose the “Communication Channels” category, and select the USBi block.

USBi

This block provides connections for multiple processors (ICs / DSPs), allowing you to use multiple processors in a single design. This block allows you to explicitly specify both the communication protocol (SPI or I²C) and the part's address, I²C address or SPI clatch line. The DSP hardware's address must match the block's selected address for communication to function properly. See the parts data sheet for more information about addressing (e.g. ADR_SEL, ADDR0, or ADDR1 pins). The default USBi protocol is I²C, to enable SPI, you must first select an SPI address in the block's drop down menu and then perform three write operations (e.g. press the write button the Register Read/Write Window 3 times). The USBi hardware has LEDs which indicate the current mode, I²C or SPI.

Software & Systems Requirements

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Software Development Tools

Tools & Simulations

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Product Recommendations

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ADAU1761 Companion Parts

Recommended Class D Audio Amplifiers

  • For a 2W output, filterless, class D stereo audio amplifier , we recommend the SSM2306 .
  • For a 2.8W output, filterless, class D mono audio amplifier , we recommend the SSM2305 .

Design Resources

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

ADAU1761 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints

Reviews

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Overview

4 Reviews
4 out of 4 (100%) customers recommend this product.
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Most Helpful Review

by JohnnyGing
Good device capable of significant signal processing. Let down by lack of detailed documentation. MAJOR POSITIVES Stupidly easy to do basic DSP. Filter design tools are easy to use and fairly accurate. Good basic documentation and examples. IDE good once you get used to it. Analogue performance of parts very good. MAJOR GRIPES Some algorithms have no described at all. Numerical format conversion not described. Numerical input formats of block not always the same and not always specified. Examples are sketchy and in some cases incomplete/wrong. (Adaptive filter coefficients are initialised to non-zero values, no dynamic processors use the variable gain input amplifier.....) Lack of details of how the device works (AIGC value to gain mapping, sample rate settings) are vague or non-existent in the toolbox documentation.

Most Recent Review

by Anonymous
It is together with SigmaStudio a very versatile product. Especially the integration of analog inputs and outputs with versatile DSP is usefull.

All Reviews

by Anonymous, 17 Nov 14
Universal and easy to use
It is together with SigmaStudio a very versatile product. Especially the integration of analog inputs and outputs with versatile DSP is usefull.
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by KaraokeMIxer, 3 Sep 14
Sigma Studio makes this a great building block
This chip is great for the heart of a microphone mixer. Balanced in and out make it suitable for pro audio. The sigma studio makes it possible to program the chip with out a PHD. All the audio routines you would expect are in there. Analog support is excellent.. I only wish the packaging had more conventional leads to solder ( prototyping can be difficult). Their EVAL module is a great start and it is affordable.
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by JohnnyGing, 9 Jan 14
ADAU1761
Good device capable of significant signal processing. Let down by lack of detailed documentation. MAJOR POSITIVES Stupidly easy to do basic DSP. Filter design tools are easy to use and fairly accurate. Good basic documentation and examples. IDE good once you get used to it. Analogue performance of parts very good. MAJOR GRIPES Some algorithms have no described at all. Numerical format conversion not described. Numerical input formats of block not always the same and not always specified. Examples are sketchy and in some cases incomplete/wrong. (Adaptive filter coefficients are initialised to non-zero values, no dynamic processors use the variable gain input amplifier.....) Lack of details of how the device works (AIGC value to gain mapping, sample rate settings) are vague or non-existent in the toolbox documentation.
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by Anonymous, 15 Mar 13
excellent quality
All characteristics of ADAU1761 are perfectly for device
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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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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.