AD8285WBCPZ

AD8285 is designed for low cost, low power, compact size, flexibility, and ease of use. It contains four channels of a low noise preamplifier (LNA) with a programmable gain amplifier (PGA) and an antialiasing filter (AAF) plus one direct to ADC channel, all integrated with a single 12bit analogue-to-digital converter (ADC). Each channel features a gain range of 16dB to 34dB in 6dB increments and an ADC with a conversion rate of up to 72MSPS. The combined input referred noise voltage of the entire channel is 3.5nV/√Hz at maximum gain. The channel is optimized for dynamic performance and low power in applications where a small package size is critical. Application includes automotive radar, adaptive cruise control, collision avoidance, blind spot detection, self parking, electronic bumper.

• 4-channel LNA, PGA, and AAF, 1 direct to ADC channel
• Programmable gain amplifier (PGA), includes low noise preamplifier (LNA)
• Serial peripheral interface (SPI) programmable gain
• 16dB to 34dB in 6dB steps, antialiasing filter (AAF)
• Programmable third order, low-pass elliptic filter (LPF) from 1.0MHz to 12.0MHz
• Analog-to-digital converter (ADC), 12 bits of accuracy upto 72MSPS
• Signal-to-noise ratio is 68.5dB (typ, fIN = 1MHz), qualified for automotive application
• Spurious-free dynamic range is 68dB (typ, gain = 16dB)
• Low power is 185mW per channel at 12 bits and 72MSPS
• 72 lead LFCSP-VQ package, operating temperature range from -40°C to +105°C

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