ADI\'s AD9271 is a revolutionary solution for portable ultrasound systems, designed for low-cost, low-power, small-size and easy-to-use ultrasound systems. It includes 8 variable gain amplifiers (VGA) (variable range 30dB) and low noise amplifiers (LNA) (output noise typical value is 1.2nV/√Hz), an anti-aliasing filter (AAF) and a 12-bit 10MSPS to 50MSPS analog-to-digital converter (ADC). This article gives the main performance, block diagram, application of AD9271, as well as the block diagram of portable continuous wave Doppler (CW Doppler) and the complete circuit diagram of the portable ultrasound system evaluation board and the list of components (BOM) used.
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