SubscribeLTC6412 differential variable gain amplifier
Linear technology introduces the LTC6412 chip which is a fully differential variable gain amplifier with linear-in-dB analog gain control. LTC6412 is designed for AC-coupled operation in IF receiver chains from 1MHz to 500MHz.
The LTC6412 is ideal for interfacing with the LTC5527 and LT5557 down converting mixers, LTC6410-6 IF amplifier and the LTC6400/LTC6401/LTC6416 ADC drivers for use in 12-, 14-, and 16-bit ADC applications.
Main features of the LTC6412 are : 800MHz –3dB Small-Signal Bandwidth , Continuously-Adjustable Gain Control , -14dB to +17dB Linear-in-dB Gain Range , 35dBm OIP3 at 240MHz Across All Gain Settings , 10dB Noise Figure at Maximum Gain , (IIP3 – NF) = +8dBm at 240MHz Across All Gains , Differential Inputs and Outputs , 50Ω Input Impedance Across all Gains , Single Supply Operation from 3V to 3.6V , 110mA Supply Current.
A typical application circuit for the LTC6412 you can see in schematic diagram bellow.
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