LT5506 Overview
Key Features
- It supports standards that use a linear modulation format
- The chip consists of a VGA, quadrature down-converting mixers and lowpass noise filters
- The LO port consists of a divide-by-two stage and LO buffers
- The IC provides all building blocks for IF down-conversion to I and Q baseband signals with a single supply voltage of 1.8V to 5.25V
- The VGA gain has a linearin-dB relationship to the control input voltage
- Hard-clipping amplifiers at the mixer outputs reduce the recovery time from a signal overload condition
- The lowpass filters reduce the out-of-band noise and spurious frequency components
- The cut-off frequency of the noise filters is approximately 8.8MHz
- The external 2xLO frequency is required to be twice the IF input frequency for the mixers
- LTC and LT are registered trademarks of Linear Technology Corporation
