# Octal LNA/VGA/AAF/ADC and Crosspoint Switch - AD9272

## Features

· Channels: 8 channels of LNA, VGA, AAF, and ADC
· LNA:
* Input-referred noise voltage: 0.75 nV/√Hz (gain = 21.3 dB @ 5 MHz)
* Programmable gain: 15.6 dB / 17.9 dB / 21.3 dB (SPI controlled)
* Single-ended input, VIN maximum: 733 mV p-p / 550 mV p-p / 367 mV p-p
* Dual-mode active input impedance matching
* Bandwidth (BW) > 100 MHz
· VGA:
* Attenuator range: −42 dB to 0 dB
* Programmable PGA gain: 21 dB / 24 dB / 27 dB / 30 dB (SPI controlled)
* Linear-in-dB gain control
· AAF:
* Programmable 2nd-order low-pass filter (LPF) from 8 MHz to 18 MHz
* Programmable high-pass filter (HPF)
· ADC:
* 12 bits at 10 MSPS to 80 MSPS
* SNR = 70 dB
* SFDR = 75 dB
· LVDS: Serial LVDS (ANSI-644, IEEE 1596.3 reduced range link)
* Data and frame clock outputs
· Switch: 8 × 8 differential crosspoint switch for CW Doppler support (SPI programmable)
· Power:
* 195 mW per channel at 12 bits/40 MSPS (TGC)
* 120 mW per channel in CW Doppler mode
· Other:
* Flexible power-down modes
* Overload recovery in <10 ns
* Fast recovery from standby mode, <2 μs
* 100-lead TQFP

## Applications

· Medical imaging/ultrasound
· Automotive radar

## General Description

· Designed for low cost, low power, small size, and ease of use.
· Features 8 channels of: LNA, VGA, AAF, and 12-bit ADC (10 MSPS to 80 MSPS)
· Each channel: Variable gain range of 42 dB, fully differential signal path, active input preamplifier termination, maximum gain of up to 52 dB.

## Functional Block Diagram

· Includes LO, LI, LG, LOSW, and DOUT for each channel (A-H)
· Includes AAF and VGA for each channel
· Crosspoint switch supports CW Doppler (SPI controlled)

## Notes

· Contact Analog Devices for further information: [mailto:highspeed.converters@analog.com?subject=AD9272%20Information%20Request](mailto:highspeed.converters@analog.com?subject=AD9272%20Information%20Request)