AD9670BBCZ

AD9670 is an octal ultrasound AFE with digital demodulator. This is designed for low cost, low power, small size, and ease of use for medical ultrasound applications. It contains eight channels of a VGA with an LNA, a CW harmonic rejection I/Q demodulator with programmable phase rotation, an antialiasing filter, an ADC, and a digital demodulator and decimator for data processing and bandwidth reduction. Each channel features a maximum gain of up to 52 dB, a fully differential signal path, and an active input preamplifier termination. The channel is optimized for high dynamic performance and low power in applications where a small package size is critical. The LNA has a single-ended-to-differential gain that is selectable through the serial port interface (SPI). In CW Doppler mode, each LNA output drives an I/Q demodulator that has independently programmable phase rotation with 16 phase settings. Application includes medical imaging/ultrasound, non-destructive testing (NDT).

• 8 channels of LNA, VGA, antialiasing filter, ADC, and digital demodulator/decimator
• Low power, 150mW per channel, time gain compensation (TGC) mode, 40 MSPS
• 62.5mW per channel, continuous wave (CW) mode, <lt/>30mW in power-down mode
• TGC channel, input referred noise voltage: 0.82nV/√Hz, maximum gain
• Flexible power-down modes, fast recovery from low power standby mode: <lt/>2 μs
• Low noise preamplifier (LNA)
• Input noise voltage is 0.78nV/√Hz, gain = 21.6dB
• Flexible active input impedance matching
• Variable gain amplifier (VGA), antialiasing filter
• 144 ball CSP-BGA package, operating temperature range from 0°C to +85°C

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ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party