The MAX3558 broadband quad-output low-noise amplifier
(LNA) is designed for digital set tops and digital terrestrial
applications. The LNA covers a 50MHz to
878MHz input frequency range, while integrating a separate
automatic gain-control (AGC) function with over
30dB of control range for each of four balanced outputs.
Each output has its own shutdown control to
reduce power consumption when not used. The
MAX3558 also includes a power detector that can be
used to close the loop on any of the AGCs to prevent
overload conditions. The LNA’s attack point is
adjustable with an external resistor. The MAX3558 is
available in a very small 28-pin QFN package with
exposed paddle (EP).
Applications
Digital Set-Top Boxes
Digital Terrestrial Receivers
Tuner Preamps