The ADAV4622 is an enhanced audio processor targeting advanced TV applications with full support for digital and analog baseband audio as well as multistandard broadcast SIF demodulation and decoding.
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, Inc., 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 use of the Analog Devices 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 ADAV4622 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.
Data Sheet, Rev. A, 11/08
A short-form datasheet for this product is available for download from this web page. Complete documentation including detailed hardware and software guides are available upon completion of a Non-Disclosure Agreement (NDA) (pdf, 27,604 bytes) and Customer Opportunity forms. Send your completed forms by e-mail to ATV_VideoRX_Info@analog.com or by fax to "Advanced TV Marketing Administrator" at +353 61 302267. Additional support is available from your Analog Devices local sales.
Additional product choices for Advanced TV applications are available on the Advantiv® site.
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|ADAV4622: Audio Processor for Advanced TV with Sound IF Demodulator and Stereo Decoder Data Sheet (Rev B, 07/2009) (pdf, 58 kB)||Data Sheets|
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|
|SoundMAX® for TV Audio||Overview||HTML|
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
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|Firmware Loader for SigmaDSPs||Device Drivers||HTML|
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.