8-channel ultrasound receivers reduce system size, power consumption

8-channel ultrasound receivers reduce system size, power consumption

Designed for continuous-wave (CW) as well as pulse-wave (PW) Doppler ultrasound, the AD9276 and AD9277 octal ultrasound receivers integrate gain, filtering, data conversion, and demodulation for CW Doppler signal processing in a 100-lead TQFP package. The AD9276 and AD9277 octal ultrasound receivers consume only 90 mW per channel when processing signals in CW Doppler mode and require 80% less board space than competing ultrasound receiver subsystems.

The AD9276 combines an eight-channel VGA with a LNA, anti-aliasing filters, and a 12-bit 80-Msample/s A/D converter, while the AD9277 features the same level of integration but incorporates a 14-bit 50-Msample/s A/D converter. These receivers provide the industry’s lowest input-referred noise of 0.75 nV/√Hz at 5 MHz typ when operating under real-world conditions, and 6-dB/√Hz better input dynamic range than competing devices.

Both feature a variable gain range of up to 42 dB and an SPI that allows designers to further customize the noise and power performance for any given imaging mode, probe, or power requirement. (Ea/1,000: AD9276, $62; AD9277, $68 — prod qty, June.)

Analog Devices , Wilmington , MA
Information 800-262-5643
http://www.analog.com