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Quad I/Q demodulator and phase shifter replaces delay lines in ultrasound equipment

Norwood, Mass.— Analog Devices Inc. is sampling the AD8339, a quad I/Q demodulator and phase shifter that is says replaces delay lines in medical ultrasound equipment to reduce component count and power consumption.

In ultrasonic beam-forming applications like continuous wave (CW) Doppler ultrasound, the AD8339 reduces board space by as much as 75 percent compared with competing devices by replacing the large crosspoint-switch matrices and analog delay lines typically used in phased-array beam forming, the company said.

The phase shifter is designed to work with Analog Devices' AD8332, AD8334 and AD8335 VGAs, the AD8021 high-speed voltage-feedback amplifier, the AD7686 and AD7693 PulSAR analog-to-digital converters and the AD9510 clock distribution IC.

For more on ADI's VGAs, read: .

For more on the AD8021, go to www.planetanalog.com/showArticle.jhtml?articleID=12804576.

For more on the AD7686, go to www.planetanalog.com/showArticle.jhtml?articleID=12802552.

For more on the AD9510 clock distribution IC, go to: www.eeproductcenter.com/showArticle.jhtml?articleID=55300319.

The AD8339 quad-programmable I&Q demodulator and phase shifter will be available in production quantities in the June 2007. The device is priced at $11.95 in 1,000-piece
quantities. The AD8339 is available in a 40-lead LFCSP (lead-frame chip-scale package).

For datasheets, application notes and more information, go to www.analog.com/en/prod/0,2877,AD8339,00.html?ref=ASC-LH-36.

Analog Devices Inc., 1-800-ANALOGD,www.analog.com.

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