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ADA8282 Arkusz danych(PDF) 1 Page - Analog Devices

Numer części ADA8282
Szczegółowy opis  6-Channel LNA/PGA/AAF with ADC
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Strona internetowa  http://www.analog.com
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ADA8282 Arkusz danych(HTML) 1 Page - Analog Devices

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Radar Receive Path AFE:
6-Channel LNA/PGA/AAF with ADC
Data Sheet
AD8283
Rev. C
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2011–2015 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
FEATURES
6 channels of LNA, PGA, AAF
1 channel of direct-to-ADC
Programmable gain amplifier (PGA)
Includes low noise preamplifier (LNA)
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 MHz to 12 MHz
Analog-to-digital converter (ADC)
12 bits of accuracy up to 72 MSPS
SNR = 67 dB
SFDR = 68 dB
Low power, 170 mW per channel at 12 bits/72 MSPS
Low noise, 3.5 nV/√Hz maximum of input referred
voltage noise
Power-down mode
72-lead, 10 mm × 10 mm, LFCSP package
Specified from −40°C to +105°C
Qualified for automotive applications
APPLICATIONS
Automotive radar
Adaptive cruise control
Collision avoidance
Blind spot detection
Self-parking
Electronic bumper
FUNCTIONAL BLOCK DIAGRAM
REFERENCE
SPI
INA+
INA–
INB+
INC+
INC–
INB–
IND+
IND–
INE+
INE–
INF+
INF–
12-BIT
ADC
DSYNC
D[0:11]
AAF
AD8283
AAF
AAF
AAF
AAF
AAF
DRV
PGA
LNA
PGA
LNA
PGA
LNA
PGA
LNA
PGA
LNA
PGA
LNA
INADC+
INADC–
MUX
Figure 1.
GENERAL DESCRIPTION
The AD8283 is designed for low cost, low power, compact size,
flexibility, and ease of use. It contains six 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 CMOS process, the AD8283 is
available in a 10 mm × 10 mm, RoHS-compliant, 72-lead
LFCSP. It is specified over the automotive temperature range
of −40°C to +105°C.
Table 1. Related Devices
Part No.
Description
AD8285
4-Channel LNA/PGA/AAF, pseudosimultaneous
channel sampling with ADC
AD8284
4-Channel LNA/PGA/AAF, sequential channel
sampling with ADC
ADA8282
4-Channel LNA/PGA


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