Devices, Inc.
      (NASDAQ: ADI), the leading provider of data-conversion
      technology and longtime collaborator with the medical imaging industry,
      today introduced the industry’s first octal (eight-channel) ultrasound
      receiver with on-chip digital I/Q demodulation and decimation filtering.
      Because of the embedded demodulation and decimation feature, ADI’s
      AD9670 is the first ultrasound receiver able to condition 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 AD9670 also 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
      best 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.

      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, Analog Devices.
      “At the same time, by extending the anti-aliasing filter frequency range
      and maintaining a high A/D converter sample rate, we are continuing to
      help medical and industrial ultrasound equipment manufacturers meet the
      trend toward higher frequency probes and superior image quality.”

      AD9670 Octal Ultrasound Receiver Key Features

      • 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 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.









      Full Production




      Price each
      per 1k units









      August 2012




      October 2012








      144-ball 10 mm x 10 mm BGA













      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 SP 500 Index.

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      Photos/Multimedia Gallery Available: https://www.businesswire.com/cgi-bin/mmg.cgi?eid=50348523lang=en