Features and Benefits

  • 4-channel LNA, PGA, and AAF
  • Low power: 185 mW per channel at 12 bits and 72 MSPS
  • 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
  • 1 direct to ADC channel
  • Low noise: 3.5 nV/√Hz maximum of input referred voltage noise
  • See data sheet for additional features

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.


  • Automotive radar
    Adaptive cruise control
    Collision avoidance
    Blind spot detection
    Self parking
    Electronic bumper

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.