Analog Devices, Inc. has launched AD9271 for the medical imaging market.
The solution integrates a complete eight-channel (octal) ultrasound receiver on a single chip to allow medical equipment designers reduce size of the signal path for mobile ultrasound systems by 50 per cent and lower power requirements by 25 per cent, while achieving noise levels and performance metrics required in critical care settings.
The AD9271 analogue front end (AFE) replaces previous multi-chip discrete solutions, and associated requirements for interconnect and package space with a single chip combine a low-noise amplifier (LNA), a variable-gain amplifier (VGA), an anti-aliasing filter (AAF) and a 12-bit analogue-to-digital converter (ADC).
"Medical imaging advancements and ADI's signal processing technology have worked hand in hand for many years", said John Hussey, vice president, high speed signal processing, Analog Devices.
"From multi-slice CT to digital X-ray, our engineers apply their strong system level understanding to the challenges facing medical electronics designers. This new product highlights our commitment to bring the same dedication to portable medical electronics applications", claims Hussey.
Fabricated in an advanced CMOS process, AD9271 includes an integrated cross point switch. Each channel of AD9271 features a variable gain range of 30 dB, and the integrated ADC has 70 dB SNR (signal-to-noise ratio) claims to match performance previously available only in discrete solutions. AD9271 features a programmable clock, data alignment and digital-test-pattern generation.
This was specifically designed to interface with AD8339, a quad programmable I&Q demodulator with phase shifter ideally suited for CW Doppler ultrasound systems. AD9271 complements ADI's AD7980, AD9704, ADV212 and ADR510.
The AD9271 ADC with integrated AFE is sampling now with volume production scheduled for May 2007. The device is priced at $40 to $72 in 1,000-unit quantities depending on speed grade. AD9271 is housed in a Pb-free, 14 mm x 14 mm, 100-lead TQFP (thin-quad flat pack) package.
