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AD9874 Datasheet IF Digitizing Subsystem

Manufacturer: Analog Devices

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General Description

The AD9874 is a general-purpose IF subsystem that digitizes a low level 10 MHz to 300 MHz IF input with a signal bandwidth ranging from 6.8 kHz to 270 kHz.

The signal chain of the AD9874 consists of a low noise amplifier, a mixer, a band-pass sigma-delta analog-to-digital converter, and a decimation filter with programmable decimation factor.

An automatic gain control (AGC) circuit gives the AD9874 12 dB of continuous gain adjustment.

Overview

IF Digitizing Subsystem AD9874*.

Key Features

  • S 10 MHz to 300 MHz Input Frequency 7.2 kHz to 270 kHz Output Signal Bandwidth 8.1 dB SSB NF 0 dBm IIP3 AGC Free Range up to.
  • 34 dBm 12 dB Continuous AGC Range 16 dB Front End Attenuator Baseband I/Q 16-Bit (or 24-Bit) Serial Digital Output LO and Sampling Clock Synthesizers Programmable Decimation Factor, Output Format, AGC, and Synthesizer Settings 370 ⍀ Input Impedance 2.7 V to 3.6 V Supply Voltage Low Current Consumption: 20 mA 48-Lead LQFP Package (1.4 mm Thick).

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