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).

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 80 MSPS

SNR = 67 dB

SFDR = 68 dB

Low power, 170 mW per channel at 12 bits/80 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

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