ADI introduces octal ultrasound receiver with on-chip JESD204B serial interface

Analog Devices, Inc. (ADI), the leading provider of data-conversion technology and longtime collaborator with the medical imaging industry, today introduced the industry's first octal ultrasound receiver to feature an on-chip JESD204B serial interface. By incorporating the 5-Gbps JESD204B interface, ADI's new AD9671 octal receiver reduces ultrasound system I/O data routing by as much as 80 percent compared to other data interface standards. The resulting savings addresses the needs of manufacturers designing small, high-performance ultrasound systems by simplifying ultrasound equipment board design while better meeting industry demand for higher data rates, larger channel counts and greater image resolution.

“By introducing the first octal ultrasound receiver with a multi-gigabit, serial data link, we are enabling ultrasound equipment designers to shrink the number of interconnects between their data converters and FPGAs”

The AD9671 receiver conditions eight channels of data from RF to a baseband frequency, reducing the processing load on the system FPGA (field-programmable gate array) by at least 50 percent compared to other receivers. The AD9671 integrates a low-noise amplifier, variable gain amplifier, anti-aliasing filter, and a 14-bit A/D converter with the industry's highest sample rate (125 MSPS) and SNR (signal-to-noise ratio) performance (75 dB) for enhanced ultrasound image quality. The new octal receiver is the latest addition to Analog Devices' award winning ultrasound receiver portfolio and is designed for mid- to high-end portable and cart-based ultrasound systems.

• Download data sheet and view product page: http://www.analog.com/AD9671
• Order samples: http://www.analog.com/AD9671
• To learn more about ultrasound and medical imaging applications visit: http://healthcare.analog.com/en/imaging/segment/health.html

"By introducing the first octal ultrasound receiver with a multi-gigabit, serial data link, we are enabling ultrasound equipment designers to shrink the number of interconnects between their data converters and FPGAs," said Pat O'Doherty, vice president, Healthcare segment, Analog Devices. "By incorporating the JESD204B serial interface, the AD9671 receiver not only simplifies PCB design and debug, it allows manufacturers to continue lowering design costs and reducing system size while maintaining excellent overall system performance."

AD9671 Octal Ultrasound Receiver with Digital I/Q Demodulation

As with ADI's recently released AD9670 octal ultrasound receiver, the AD9671 integrates a digital I/Q demodulator, programmable-oscillator and 16-tap FIR (finite-impulse response) decimation filter to reduce FPGA data bandwidth requirements, while additionally combining multiple channels into a single CML (current-mode logic) data lane. The AD9671 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.

AD9671 Octal Ultrasound Receiver Key Features

• 5-Gbps serial JESD204B CML interface
• Digital I/Q demodulator with programmable oscillator
• FIR decimation filter
  • 16 taps per decimation factor
  • Maximum decimation of 32
• 14-bit, 125-MSPS A/D converter
  • SNR: 75 dB
• 8-channel LNA, VGA, AAF, ADC
• Low power:
  • 130-mW/channel @ 40 MSPS in TGC (time gain compensation) mode
  • 55 mW/channel in CW mode
• Noise: 0.78 nV/√Hz typical at 5 MHz (gain = 21.3 dB)
• Harmonic rejection to 13^th order on CW-Doppler signals

Source Analog Devices