AD9271BSVZ-50

ANALOG DEVICES  AD9271BSVZ-50  芯片, 低噪放大器/VGA/AAF/模数转换器/交叉开关, HTQFP-100

GENERAL DESCRIPTION

The AD9271 is designed for low cost, low power, small size, and ease of use. It contains eight channels of a variable gain amplifier VGA with low noise preamplifier LNA; an antialiasing filter AAF; and a 12-bit, 10 MSPS to 50 MSPS analog-to-digital converter ADC.

FEATURES

8 channels of LNA, VGA, AAF, and ADC

Low noise preamplifier LNA

   Input-referred noise = 1.2 nV/√Hz @ 7.5 MHz typical

   SPI-programmable gain = 14 dB/15.6 dB/18 dB

   Single-ended input; VINmaximum = 400 mV p-p/333 mV p-p/250 mV p-p

   Dual mode, active input impedance match

   Bandwidth BW > 70 MHz

   Full-scale FS output = 2 V p-p diff

Variable gain amplifier VGA

   Gain range = −6 dB to +24 dB

   Linear-in-dB gain control

Antialiasing filter AAF

   3rd-order Butterworth cutoff

   Programmable from 8 MHz to 18 MHz

Analog-to-digital converter ADC

   12 bits at 10 MSPS to 50 MSPS

   SNR = 70 dB

   SFDR = 80 dB

   Serial LVDS ANSI-644, IEEE 1596.3 reduced range link

   Data and frame clock outputs

Includes crosspoint switch to support

   continuous wave CW Doppler

Low power, 150 mW/channel at 12 bits/40 MSPS TGC

60 mW/channel in CW Doppler

Single 1.8 V supply 3.3 V supply for CW Doppler output bias

Flexible power-down modes

Overload recovery in <10 ns

Fast recovery from low power standby mode, <2 μs

100-pin TQFP