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ADA8282WBCPZ Datasheet(PDF) 1 Page - Analog Devices |
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ADA8282WBCPZ Datasheet(HTML) 1 Page - Analog Devices |
1 / 21 page Radar Receive Path AFE: 4-Channel LNA and PGA Data Sheet ADA8282 Rev. 0 Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility isassumedby AnalogDevicesforits use,norforany infringements ofpatents orother rights ofthirdparties thatmay resultfrom its use.Specificationssubjecttochangewithoutnotice.No license is granted by implicationor otherwise underany patentorpatentrights ofAnalogDevices . Trademarks andregistered trademarks are the property oftheir respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2015 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES 4 channels of low noise amplifiers (LNAs) followed by programmable gain amplifiers (PGAs) Minimum −3 dB bandwidth of 5 MHz Typical –3 dB bandwidth of 42.3 MHz Typical slew rate of 28 V/µs Differential input and output Gain of 18 dB to 36 dB in 6 dB steps Selectable low noise and low power modes Input referred noise of 4.5 nV/√Hz at 18.3 mW per channel Input referred noise of 3.8 nV/√Hz at 26.5 mW per channel Input referred noise of 3.6 nV/√Hz at 34.8 mW per channel Input referred noise of 3.4 nV/√Hz at 54.8 mW per channel Channel to channel gain matching of ±0.25 dB Absolute gain error of ±0.5 dB SPI programmable Power-down mode (SPI selectable) 3.1 V p-p differential output swing when using a 3.3 V supply 32-lead, 5 mm × 5 mm LFCSP package Specified from −40°C to +125°C Qualified for automotive applications APPLICATIONS Automotive radar Adaptive cruise control Collision avoidance Blind spot detection Self parking Electronic bumpers FUNCTIONAL BLOCK DIAGRAM +OUTA –OUTA +INA –INA LNA PGA 3nV√Hz +24dB –6dB TO +12dB +OUTB –OUTB +INB –INB LNA PGA 3nV√Hz +24dB –6dB TO +12dB +OUTC –OUTC +INC –INC LNA PGA 3nV√Hz +24dB –6dB TO +12dB +OUTD –OUTD +IND –IND LNA PGA 3nV√Hz +24dB –6dB TO +12dB ADA8282 POWER MODE SPI GAIN SELECT VIO AVDD RESET SCLK SDI SDO CS Figure 1. GENERAL DESCRIPTION The ADA8282 is designed for applications that require low cost, low power, compact size, and flexibility. The ADA8282 has four parallel channels, eachincluding anLNA and a PGA. The LNA and PGA combinetoforma signal chainthat features a gain range of 18 dB to 36 dB in 6 dB increments with a guaranteed minimum bandwidth of 5 MHz. Using the highest power settings, the combinedinput referred voltage noise of the combined LNA and PGA channel is 3.4 nV/√Hz at maximum gain. The ADA8282 can be configured in four power modes that trade off power andnoise performance to optimize the overall performance according to the end application. Fabricated in an advanced complementary metal-oxide semiconductor (CMOS)process, the ADA8282 is available in a 5 mm × 5 mm, RoHS-compliant, 32-leadLFCSP. It is specified over the automotive temperature range of −40°C to +125°C. |
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