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Analog Devices - 6-Channel LNA/PGA/AAF

Numéro de référence AD8283
Description 6-Channel LNA/PGA/AAF
Fabricant Analog Devices 
Logo Analog Devices 





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AD8283 fiche technique
Data Sheet
Radar Receive Path AFE:
6-Channel LNA/PGA/AAF with ADC
AD8283
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
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.
FUNCTIONAL BLOCK DIAGRAM
INA+
INA–
INB+
INB–
INC+
INC–
IND+
IND–
INE+
INE–
INF+
INF–
INADC+
INADC–
LNA PGA AAF
LNA PGA AAF
LNA PGA AAF
LNA PGA AAF
LNA PGA AAF
LNA PGA AAF
SPI
REFERENCE
MUX
12-BIT
ADC
DRV
AD8283
DSYNC
D[0:11]
Figure 1.
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
Rev. C
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. 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

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