Analog Devices' AD9670 octal ultrasound receiver captures and conditions ultrasound RF signals to ease FPGA processing burden in cart-based and portable ultrasound equipment.
Octal ultrasound receiver with digital I/Q demodulator and decimation filter captures and conditions ultrasound RF signals to ease FPGA processing burden in cart-based and portable ultrasound equipment. (Graphic: Business Wire)
The integrated digital I/Q demodulator, programmable-oscillator and 16-tap FIR (finite-impulse response) decimation filter of the AD9670 reduce the FPGA's data bandwidth requirements, allowing designers to use less expensive processors or reallocate processing bandwidth to other system functions. The new receiver also provides a continuous wave (CW) processing path with an analog I/Q demodulator that has harmonic rejection to the 13th order, which allows designers to reduce the number of filter components to lower system cost, reduce design complexity, and improve signal sensitivity. The CW-mode output dynamic range is more than 160 dBc/ √Hz per channel.
Additionally, the AD9670 octal receiver's 30-MHz anti-aliasing filter frequency and 125-MSPS A/D converter sample rate combine to yield SNR performance that is 3-dB higher than competing devices. The 14-bit A/D converter also features a programmable clock, data alignment, and programmable digital test pattern generation, including built-in fixed and pseudo random patterns and custom user-defined test patterns, entered via a serial port interface. Total power is 130-mW per channel, while an eight-channel low-noise amplifier reduces input-referred noise to just 0.78 nV/√Hz typical at 5 MHz (gain = 21.3 dB).
"By introducing the first octal ultrasound receiver with digital
demodulation and decimation filtering, we are able to minimize the data
I/O and throughput rates and place less stress on the system processor,"
said Pat O'Doherty, vice president, healthcare segment,
AD9670 Octal Ultrasound Receiver Key Features
Availability, Pricing and Complementary Components
The AD9670 octal receiver with integrated digital demodulation and decimation filtering is pin-similar to ADI's AD9278 and AD9279 octal receivers, allowing designers to upgrade cart-based and portable ultrasound equipment designs using a common PCB board layout.
||144-ball 10 mm x 10 mm BGA|
Innovation, performance, and excellence are the cultural pillars on
Follow ADI on Twitter at http://www.twitter.com/ADI_News
To subscribe to Analog Dialogue, ADI's monthly technical journal, visit: http://www.analog.com/library/analogDialogue/
Photos/Multimedia Gallery Available: http://www.businesswire.com/cgi-bin/mmg.cgi?eid=50348523&lang=en
News Provided by Acquire Media