Product Details
●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 speci-fied over the automotive temperature range of −40°C to +105°C.
●APPLICATIONS
● Automotive radar
● Adaptive cruise control
● Collision avoidance
● Blind spot detection
● Self-parking
● Electronic bumper
●### Features and Benefits
● 4 channel mux to LNA, PGA, AAF
● 1 direct-to-ADC channel
● Programmable gain amplifier (PGA)
● Includes low noise preamplifier (LNA)
● SPI-programmable gain = 17 dB to 35 dB in 6 dB steps
● Antialiasing filter (AAF)
● Programmable third-order low-pass elliptic filter (LPF) from 9 MHz to 15 MHz
● Analog-to-digital converter (ADC)
● 12 bits of accuracy up to 60 MSPS
● SNR = 67 dB
● SFDR = 68 dBc
● See data sheet for additional features
