AD8285:  Radar Receive Path AFE: 4-Channel LNA/PGA/AAF with ADC

Product Details

Product Status:Recommended for New Designs

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 datasheet for additional features

Functional Block Diagram for AD8285

Evaluation Kits & Symbols & Footprints

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Price, packaging, availability

AD8285 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD8285WBCPZ Status: Production LFCSP:LEADFRM CHIP SCALE 72 Auto Tray, 168 $8.75 $8.33 Y  Material Info Notify Me Purchase Sample
AD8285WBCPZ-RL Status: Production LFCSP:LEADFRM CHIP SCALE 72 Auto Reel, 2000 $8.75 $8.33 Y  Material Info Notify Me Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

AD8283 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD8285CP-EBZ Status: Production 4 Channel 72 Lead LFCSP Evaluation Board $750.00 Yes -

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.

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