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Fully-programmable audio ICs deliver advanced features to heighten HDTV experience

Analog Devices, Inc. (ADI) has introduced two audio processors for HDTV sound that provide uninterrupted, high-fidelity audio connectivity from a variety of digital and analog home entertainment sources. The ADAV4601 and
ADAV4622 audio processors expand ADI's Advantiv(TM) 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. 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 customize 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-sale software
updates and enable TV manufacturers to easily add performance enhancements or remedy TV model hardware and software issues.

According to Bill Bucklen, director, Advanced Television Segment, Analog Devices, “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. 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 minimize costs.”

Combined with high-performance, multi-channel, 24-bit
analog-to-digital converters (ADCs), digital-to-analog converters (DACs) and an integrated multi-channel, pulse-width 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 start-up, 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 analog baseband audio, as well as multi-standard analog 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 equalizer; and up to 200 ms of stereo delay memory for audio/video synchronization. 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.

Pricing and Availability
The ADAV4601 and ADAV4622 audio processors are available now in full-production quantities. The processors ship in 14-mm x 14-mm LQFP (low-profile quad flat package) packages and are pin-for-pin and
software-register compatible. The ADAV4601 is priced at $3.85 per unit and the ADAV4622 is priced at $4.75 per unit, both in 10,000-piece quantities. For more information, visit http://www.analog.com/pr/ADAV4601 and http://www.analog.com/pr/ADAV4622.

Analog Devices in Advanced TV
Because the signal processing performance requirements for HD video, audio and interconnect functions are significantly higher than for standard-definition TVs, ADI offers the Advantiv advanced
television portfolio, providing cost-effective analog, digital, and mixed-signal solutions to the most difficult multi-format advanced television (ATV) design challenges. Supported by ADI's system-level
experts, these customer-driven solutions enable the latest in HD home entertainment systems. Analog Devices offers a broad range of industry-certified solutions for advanced television applications,
with products that enable rewarding experiences for consumers enjoying the latest HDTVs, DVD players, digital video recorders (DVRs), audio/video receivers (AVRs), camcorders and cable and satellite
set-top boxes. For more information, visit
http://www.analog.com/pr/advantiv.

Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the longest standing, highest growth companies within the technology sector. Acknowledged industry-wide as the world leader in data conversion and signal
conditioning technology, Analog Devices serves over 60,000 customers, representing virtually all types of electronic equipment. Celebrating over 40 years as a leading global manufacturer of high-performance
integrated circuits used in analog and digital signal processing applications, Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the
world. Analog Devices' common stock is listed on the New York Stock Exchange under the ticker “ADI” and is included in the S&P 500 Index. http://www.analog.com.

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