●Product Details
●The 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 12-bit analog-to-digital converter (ADC).
●Each channel features a gain range of 16 dB to 34 dB in 6 dB increments and an ADC with a conversion rate of up to 72 MSPS. The combined input referred noise voltage 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 complementary metal oxide semiconductor (CMOS) process, the AD8285 is available in a 10 mm × 10 mm, RoHS compliant, 72-lead LFCSP that is specified 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 LNA, PGA, and AAF
● 1 direct to ADC channel
● Programmable gain amplifier (PGA)
●Includes low noise preamplifier (LNA)
●Serial peripheral interface (SPI) programmable gain 16 dB to 34 dB in 6 dB steps
● Antialiasing filter (AAF)
●Programmable third order, low-pass elliptic filter (LPF) from 1.0 MHz to 12.0 MHz
● Analog-to-digital converter (ADC)
●12 bits of accuracy up to 72 MSPS
●Signal-to-noise ratio (SNR): 68.5 dB
●Spurious-free dynamic range (SFDR): 68 dB at gain = 16 dB
● Low power: 185 mW per channel at 12 bits and 72 MSPS
● Low noise: 3.5 nV/√Hz maximum of input referred voltage noise
● See data sheet for additional features
