ad8284雷达接收通道AFE：4通道多路复用器低噪声放大器PGA/AAF和ADC数据表

　　The AD8284 is an integrated analog front end designed for low cost， compact size， flexibility， and ease of use. It contains a 4-channel differential multiplexer （mux）， a 1-channel low noise preamplifier （LNA） with a programmable gain amplifier （PGA） and an antialiasing filter （AAF）， as well as one direct-to-ADC channel， all integrated with a single， 12-bit analog-to-digital converter （ADC）。 The AD8284 also incorporates a saturation detection circuit for high frequency overvoltage conditions that would otherwise be filtered by the AAF. The analog channel features a gain range of 17 dB to 35 dB in 6 dB increments， and an ADC with a conversion rate of up to 60 MSPS. The combined input referred voltage noise of the entire channel is 3.5 nV/√Hz at maximum gain. The channel is optimized for dynamic performance and low power in applications where a small package size is critical. Fabricated in an advanced CMOS process， the AD8284 is available in a 10 mm × 10 mm， RoHS compliant， 64-lead TQFP. It is specified over the automotive temperature range of −40°C to +105°C.