Analog devices offers the ad8339 quad-programmable i&q demodulator with phase shifter for medical ultrasound systems. In ultrasonic beam-forming applications like continuous-wave [cw] doppler ultrasound, the ad8339 reduces board space by as much as 75 per cent compared to competing devices by replacing the large crosspoint-switch matrices and analogue delay lines typically used in phased-array beam forming. The ad8339 consumes just 73 mw / channel, allowing medical instrument manufacturers to provide cw doppler capabilities in portable and battery-powered equipment.
