Product category:
Microprocessors, Microcontrollers and DSPs
News Release from: Analog Devices | Subject: ADAV4601 and ADAV4622
Edited by the Electronicstalk Editorial
Team on 28 March 2008
Audio processors are flexible about HDTV
inputs
A single ADAV46xx-based audio platform can support multiple TV designs - from high-end to low-end - without costly system redesign.
Two new Analog Devices audio processors for HDTV sound provide uninterrupted high-fidelity audio connectivity from a variety of digital and analogue home entertainment sources The ADAV4601 and ADAV4622 audio processors expand ADI's Advantiv advanced television solutions portfolio to provide complete, cost-effective, fully programmable audio solutions that speed delivery of audio enhancements in flat-panel plasma and LCD HDTV designs
This article was originally published on Electronicstalk on 2 Jul 2008 at 8.00am (UK)
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With a single ADAV46xx-based audio platform, engineers can support multiple TV designs - from high-end to low-end - without costly system redesign, reducing time to market by up to several weeks.
Offering unit costs that are comparable with fixed-function audio processors, the fully programmable ADAV46xx family gives OEMs the flexibility to customise their advanced audio subsystems, or to use default settings for fixed-function audio processing.
In addition to supporting the latest audio standards used in HDTVs, the new audio processors provide the capability for supporting post-sales software updates and enable TV manufacturers to easily add performance enhancements or remedy TV model hardware and software issues.
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"The flat-panel TV market has shifted into high-gear, so manufacturers must deliver advanced audio functions across numerous product lines, price targets and industry standards", says Bill Bucklen, Director, Advanced Television Segment, Analog Devices.
"The ADAV46xx family enables audio engineers to deliver lifelike sound that compensates for the space-constrained speakers in today's flat-panel LCD and plasma TVs".
"At the same time, ADI's new audio processors provide support for important end-user system firmware upgrades that are critical in helping to reduce product returns and minimise costs".
Combined with high-performance multichannel 24bit ADCs, DACs and an integrated multichannel pulsewidth modulator (PWM), the ADAV46xx family delivers all the subsystem functionality required for an advanced TV audio implementation.
Designed to work with ADI's latest High-Definition Multimedia Interface (HDMI) receivers and Class-D power stages, the new audio processors eliminate annoying pops and clicks that can disrupt audio clarity.
The ADAV46xx also includes an external mute pin, allowing designers to provide pop/click reduction during system startup, change audio sources seamlessly and deliver the high-quality audio required to match today's high-definition (HD) video.
The enhanced processors provide full support for digital and analogue baseband audio, as well as multistandard analogue broadcast demodulation and decoding for worldwide broadcasting standards such as BTSC, EIAJ, A2-Korea, A2-Europe and Nicam.
The ADAV4622 includes an integrated broadcast audio processor with an auto-standard-detecting (ASD) processor, which reduces design time and costs over competing offerings that require external SIF circuitry for broadcast standard detection and switching.
The ADAV46xx audio processors provide advanced audio features such as a dedicated TV audio flow that incorporates full matrix switching of any input to any output; automatic volume control for compensating for volume changes during advertisements or when switching channels; dynamic bass, a multiband equaliser; and up to 200ms of stereo delay memory for audio/video synchronisation.
Leveraging Analog Devices' award-winning SigmaStudio DSP graphical programming tool, audio systems engineers can easily build flexible digital audio platforms by selecting from ADI's library of royalty-free audio enhancement algorithms and support for popular third-party audio algorithms.
The ADAV4601 and ADAV4622 audio processors are available now in full-production quantities.
The processors ship in 14 x 14mm LQFP (low-profile quad flat package) packages and are pin-for-pin and software-register compatible.
The ADAV4601 is priced at US $3.85 per unit and the ADAV4622 is priced at $4.75 per unit, both in 10,000-piece quantities.
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