AD9272BSVZ-65

The AD9272BSVZ-65 from Analog Devices is an octal LNA/VGA/AAF/ADC with integrated crosspoint switch, designed for low-cost, low-power medical imaging and automotive radar applications. It contains eight channels each comprising a low-noise preamplifier (LNA) with input-referred noise of 0.75 nV/√Hz (typical at 21.3 dB gain, 5 MHz), a variable gain amplifier (VGA) with an attenuator range of -42 dB to 0 dB and SPI-programmable PGA gain (21 dB, 24 dB, 27 dB, 30 dB), a programmable second-order antialiasing filter (AAF) with bandwidth adjustable from 8 MHz to 18 MHz, and a 12-bit ADC sampling at up to 65 MSPS. The ADC achieves 70 dB SNR and 75 dB SFDR typical. An 8x8 differential crosspoint switch enables continuous wave (CW) Doppler processing. Power consumption is 195 mW per channel at 40 MSPS in time-gain compensation (TGC) mode and 120 mW per channel in CW Doppler mode. The device operates from 1.8V and 3V supplies over a temperature range of -40°C to 85°C and is housed in a 100-lead TQFP with exposed pad (100-TQFP-EP, 14x14 mm) for surface-mount assembly and thermal dissipation.