Edie Kramer ,
Industry’s First Octal Ultrasound Receiver with JESD204B Serial Interface Reduces Data I/O Routing and Simplifies Ultrasound System Design
With a 5-Gbps data conversion interface, Analog Devices’ AD9671 octal ultrasound receiver supports higher data rates and channel counts of cart-based and portable ultrasound equipment.
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.
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.
“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 13th order on CW-Doppler signals
Availability, Pricing and Complementary Components
The AD9671 octal receiver with integrated digital demodulation and decimation filtering is pin-similar to ADI’s AD9670 octal receivers, allowing designers to migrate cart-based and portable ultrasound equipment designs using a common PCB board layout.
Product Sample Availability Full Production Price each per 1k units Packaging AD9671 October 2012 December 2012 $75.00 144-ball 10 mm x 10 mm BGA
* Analog Devices, Inc. leads the worldwide data converter market with a 48 percent share, according to industry analyst firm Databeans, Inc. in its market research report titled “2011 Data Converters.” Analog Devices’ 48 percent share is larger than the combined market share of the nearest eight competitors.
- About Analog Devices
- Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the longest standing, highest growth companies within the technology sector. Acknowledged industry-wide as the world leader in data conversion and signal conditioning technology, Analog Devices serves over 60,000 customers, representing virtually all types of electronic equipment. Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices is included in the S&P 500 Index.
Editor's Contact Information
- Edie Kramer