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ADAV4601:  Audio Processor for Advanced TV

Product Details


The ADAV4601 is an enhanced audio processor targeting advanced TV applications with full support for digital and analog baseband audio.

The audio processor, by default, loads a dedicated TV audio flow that incorporates full matrix switching (any input to any output), automatic volume control that compensates for volume changes during advertisements or when switching channels, dynamic bass, a multiband equalizer, and up to 200 ms of stereo delay memory for audio-video synchronization.

Alternatively, Analog Devices offers an award-winning graphical programming tool (SigmaStudio™) that allows custom flows to be quickly developed and evaluated. This allows the creation of customer-specific audio flows, including the use of ADI library of third-party algorithms.

The analog I/O integrates Analog Devices proprietary continuous-time, multibit Σ-Δ architecture to bring a higher level of performance to ATV systems, required by third-party algorithm providers to meet system branding certification. The analog input is provided by 95 dB dynamic range (DNR) ADCs, and analog output is provided by 94 dB DNR DACs.

The main speaker outputs can be supplied as a digitally modulated PWM stream to support digital amplifiers.

The ADAV4601 includes multichannel digital inputs and outputs. In addition, digital input channels can be routed through integrated sample rate converters (SRC), which are capable of supporting any arbitrary sample rate from 5 kHz to 50 kHz.

Applications

  • General-purpose consumer audio post processing
    Home audio
    DVD recorders
    Home theater in a box systems and DVD receivers
  • Audio processing subsystems for DTV-ready TVs
  • Analog broadcast capability for iDTVs

FEATURES and BENEFITS

  • Fully programmable 28-bit audio processor for enhanced ATV sound—default audio processing flow loaded on reset
  • Implements Analog Devices, Inc. and third-party branded audio algorithms
  • Adjustable digital delay line for audio/video Synchronization for up to 200 ms stereo delay
  • High performance 24-bit ADC and DAC
    94 dB DNR performance on DAC channels
    95 dB DNR performance on ADC channels
  • Headphone output with integrated amplifiers
  • High performance pulse-width modulation (PWM) digital outputs
  • Multichannel digital baseband I/O - Please see data sheet.
  • Please see data sheet for additional features.

Functional Block Diagram for ADAV4601

Documentation

Title Content Type File Type
ADAV4601: Audio Processor for Advanced TV Data Sheet (Rev B, 09/2009) (pdf, 626 kB) Data Sheets 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
SoundMAX® for TV Audio Overview HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
Firmware Loader for SigmaDSPs 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

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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