Datasheet > ADA8282

ADA8282

更新时间： 2024-11-24 01:17:43

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
21页	511K
描述
Radar Receive Path AFE - 4-Channel LNA and PGA

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ADA8282 数据手册

Radar Receive Path AFE:

4-Channel LNA and PGA

ADA8282

Data Sheet

FEATURES

FUNCTIONAL BLOCK DIAGRAM

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

ADA8282

+INA

+OUTA

–OUTA

LNA

PGA

3nV√Hz

–INA

+24dB –6dB TO +12dB

+INB

–INB

+OUTB

–OUTB

Differential input and output

Gain of 18 dB to 36 dB in 6 dB steps

LNA

PGA

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

+24dB –6dB TO +12dB

+INC

–INC

+OUTC

–OUTC

LNA

PGA

+24dB –6dB TO +12dB

+IND

–IND

+OUTD

–OUTD

LNA

PGA

3nV√Hz

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

+24dB –6dB TO +12dB

GAIN

POWER

MODE SELECT

SPI

Qualified for automotive applications

CS SCLK SDI SDO VIO AVDD RESET

APPLICATIONS

Figure 1.

Automotive radar

Adaptive cruise control

Collision avoidance

Blind spot detection

Self parking

Electronic bumpers

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 combine to form a signal chainthat features a gain range

of 18 dB to 36 dB in 6 dB increments with a guaranteed

minimum bandwidth of 5MHz.

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.

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.

Rev. 0

Document Feedback

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility isassumed by Ana lo g Device s f or its use ,no rf or any infringements of pa tents or o the r

rights of third pa rties thatmay resultf rom its use.S pec if icatio ns s ubje ct to cha nge w ithoutnotice .No

license is granted by implication or otherwise under any patent or patent rig ht s of Ana lo g Dev ices .

Trademarks and registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Technical Support

www.analog.com

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