SI4209 Datasheet | Silicon Labs

.. Si4209 Transceiver for GSM and GPRS Description The Si4209 transceiver is a plete RF front end for dual-band GSM and GPRS wireless munications. The receive section interfaces between the RF band-select SAW filters and the baseband subsystem. The Si4209 receiver leverages a proven digital low-IF architecture and enables a universal baseband interface without the need for plex dc offset pensation. The transmit section of Si4209 provides a plete upconversion path from the baseband subsystem to the power amplifier (PA) using an offset phase-locked loop (OPLL) integrated with Silicon Laboratories’ patented synthesizer technology. All sensitive...