Analog front end captures high-def content

Norwood, Mass. — Analog Devices Inc. launched the flagship device in a family of analog front ends for high-definition image/video processing applications with a low-voltage differential signaling interface that is said to boost signal conversion performance by 30 percent.

ADI's AD9970 AFE consists of a 14-bit analog-to-digital (A/D) converter operating at 155 mW at 65 Msamples/s, a variable gain amplifier (VGA) and correlated double sampler (CDS), in a 5 x 5 mm package.

A programmable timing driver, dubbed Precision Timing , further boosts performance by enabling precise and localized control of high-speed charge-coupled device (CCD) clock signals, said Stuart Boyd, ADI's product line director, high-speed signal processing business.

Designed for consumer imaging products such as camcorders and digital still cameras, the AD9970 serves as a complete AFE. “The performance of ADI's AD9970 AFE is necessary to capture HD content and enable the advanced capabilities that consumers are seeking in today's HD camcorders,” Boyd said.

The AD9970 is also one of the first AFEs on the market to use a low-voltage differential signaling (LVDS) interface for HD imaging equipment, Boyd said.

ADI’s AD9970 AFE is inside Canon’s HDV XL H1 camcorder. Click here for more information about the camcorder.

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The AD9970 AFE is available for $10.74 each in 1,000-piece quantities in a 5 x 5 mm LFCSP. It is specified over an operating temperature range of –25°C to +85°C. Click here for the AD9970 data sheet.

Analog Devices Inc. , 1-800-262-5643,

Click here for more image technology information at the Video/Imaging DesignLine.

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