The AD8333-EVALZ is an evaluation board for evaluating AD8333 I/Q demodulator and phase shifter. The AD83331 is a dual phase shifter and I/Q demodulator that enables coherent summing and phase alignment of multiple analog data channels. It is the first solid state device suitable for beamformer circuits, such as those used in high performance medical ultrasound equipment featuring CW Doppler. The AD8333 can be applied as a major element in analog beamformer circuits in medical ultrasound equipment. The AD8333 features an asynchronous reset pin. When used in arrays, the reset pin sets all the LO dividers in the same state. The two I/Q demodulators can be used independently in other nonbeamforming applications. In that case, a transimpedance amplifier is needed for each of the I and Q outputs, four in total for the dual I/Q demodulator.
16 phase select options on each output (22.5° per step)
Quadrature demodulation accuracy
Phase accuracy of ±0.1°
Amplitude balance of ±0.05dB
Power down mode
Power consumption is 190mW/channel (380mW total)
±5V supply
159dB/Hz output dynamic range
Baseband is determined by external filtering
ESD sensitive device, take proper precaution while handling the device.
