8-ch ultrasound receiver integrates digital demodulator and decimation filter

8-ch ultrasound receiver integrates digital demodulator and decimation filter

Offered as the first of its kind, the 8-channel AD9670 ultrasound receiver with on-chip digital I/Q demodulation and decimation filtering is able to condition eight channels of data from RF to a baseband frequency, reducing the processing load on the system FPGA by at least 50% compared to other receivers. This part 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 of 125 Msamples/s and best SNR performance of 75 dB.

Power consumption is 130-mW/channel at 40 Msamples/s in TGC (time gain compensation) mode and 55 mW/channel in CW mode, while input-referred noise is 0.78 nV/√Hz typical at 5 MHz (gain = 21.3 dB).Housing is in a 144-ball 10 x 10 mm BGA package.($69 ea — prod qty, August 2012)

By Christina Nickolas

Analog Devices , Wilmington , MA
Sales 800-262-5643
www.analog.com