SKY74963
Overview
The SKY74963 RF transceiver is a highly integrated device for multi-band Global System for Mobile Communications (GSM) or General Packet Radio Service (GPRS) applications. The device requires a minimal number of external components to complete a GSM radio subsystem.
- Direct down-conversion receiver eliminates the external image reject/IF filters
- Three separate LNAs with single-ended inputs The receive path implements a direct down-conversion
- RF gain range: GSM = 20 dB, DCS = 22 dB, PCS = 20 dB. architecture that eliminates the need for Intermediate Frequency Baseband gain range = 100 dB (IF) components. The SKY74963 consists of three integrated Low
- Gain selectable in 2 dB steps Noise Amplifiers (LNAs), a quadrature demodulator, tunable
- Integrated receive baseband filters with tunable bandwidth receiver baseband filters, and a DC Offset Correction (DCOC)
- Integrated DCOC sequencer sequencer.
- Reduced filtering requirements with translational loop transmit In the transmit path, the device consists of an In-phase and architecture Quadrature (I/Q) modulator within a frequency translation loop
- Integrated transmit VCOs designed to perform frequency up-conversion with high output
- Wide RF range for multi-band operation spectral purity. This loop also contains a phase-frequency
- Integrated PAC loop detector, charge pump, mixer, programmable dividers, and high
