SI4209 Overview
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.
SI4209 Key Features
- Digital low-IF receiver
- plete support for 900/1800, 900/1900
- Region management flexibility
- Offset PLL transmitter
- Integrated TX VCO, loop filter, and varactor
- Frequency synthesizer
- Integrated RF VCO, loop filter, and varactor
- Digitally-controlled crystal oscillator (DCXO)
- Universal analog baseband interface
- Quad-band support