(1 PC) STB5600 STMICRO GPS RF FRONT-END IC, RF/MICROWAVE DOWN CONVERTER TQFP-32

THIS LISTING IS FOR (1 PC) OF STB5600 BY STMICROGPS RF FRONT-END IC, RF/MICROWAVE DOWN CONVERTER TQFP-32 FUNCTIONAL DESCRIPTION The STB5600 GPS front-end is fed with the signal from an active antenna, via a ceramic RF filter. The gain between the antenna element and the STB5600 is expected to be between 10dB and 35dB overall, made up of the antenna LNA gain, the feeder loss, connector loss, and the ceramic filter loss. In order to use an off-the-shelfceramic filter, conventionally 50 Ohms single ended, a matching circuit is used. (see appendix A.1), which provides a 300 Ohm differential drive to the STB5600. A similar circuit can be used to feed the LO signal if using the recommended low-cost oscillator circuit (appendix A.3). Note that the STB5600 radio architecture and the oscillator described here are covered by various patents held by SGS-Thomson and by others. The use of the circuits described in this data-sheet for any other purpose may infringe such patents. - RF SECTION The di