LT5502 Overview
Key Features
- It consists of an IF limiter, quadrature down mixers, integrated lowpass filters, and divide-by-two LO buffers
- The demodulator provides all building blocks for demodulation of I and Q baseband signals with a single supply voltage of 1.8V to 5.25V
- The IF limiter has 84dB small-signal gain, and a built-in receive signal strength indicator (RSSI) with over 90dB linear range
- The integrated lowpass output filters act as antialiasing and pulse-shaping filters for demodulated I/Q-baseband signals
- The 3dB cutoff frequency of the filters is about 7.7MHz
- The VCO frequency is required to be twice the desired operating frequency to provide quadrature local oscillator (LO) signals to the mixers
- LTC and LT are registered trademarks of Linear Technology Corporation
