DESCRIPTION
The LTC®6412 is a fully differential variable gain amplifier with linear-in-dB analog gain control. It is designed for AC-coupled operation in IF receiver chains from 1MHz to 500MHz. The part has a constant OIP3 across a wide output amplitude range and across the 31dB gain control range. The output noise (NF + Gain) is also flat versus gain to provide a uniform spurious-free dynamic range (SFDR) >120dB over the full gain control range at 240MHz. Asserting the SHDN pin reduces the current consumption below 1mA for power-down or sleep modes. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. FEATURES
n n n n n n n n n n n n 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 Al...
Linear Technology
