AD9674KBCZ

AD9674 is an octal ultrasound analogue front end. It is designed for low cost, low power, small size and ease of use for medical ultrasound. It contains eight channels of a VGA with an LNA, a CW harmonic rejection I/Q demodulator with programmable phase rotation, an AAF, an ADC, a digital HPF, and RF decimation by 2. Each channel features a maximum gain of up to 52dB, 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). Application includes medical imaging/ultrasound, non-destructive testing (NDT).

• 8 channels of LNA, VGA, AAF, ADC, and digital RF decimator
• Flexible power-down modes, fast recovery from low power standby mode <lt/>2μs
• Low noise preamplifier (LNA), flexible active input impedance matching
• Variable gain amplifier (VGA), antialiasing filter (AAF)
• Configurable serial low voltage differential signalling (LVDS)
• Continuous wave (CW) doppler mode harmonic rejection I/Q demodulator
• Typical gain is 17.9dB (single-ended input to differential output, AVDD1=1.8V)
• Typical 0.1dB input compression point is 1V p-p (LNA gain=15.6dB, AVDD1=1.8V)
• Typical input SNR is 94dB (noise bandwidth=15MHz, LNA gain=21.6dB)
• 144-pin CSP-BGA package, temperature range from 0°C to 85°C

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