The RF133 RF/IF Transceiver is a highly integrated, monolithic device optimized for use in GSM and other TDMA single-band or multi-band applications.

The receive path of the device consists of three Intermediate Frequency (IF) amplifiers with selectable gain, an I/Q demodulator, baseband filters, DC offset compensation circuitry, and selectable gain baseband amplifiers.

FEATUREs
• Quadrature demodulator for downconversion
• 80 dB IF gain range and 30 dB baseband gain range
• Integrated receive baseband filters with tunable bandwidth
• Integrated transmit path with high phase accuracy
• Reduced filtering requirements for the transmit path
• Broad RF and IF range for multi-band operation
• Integrated selectable local oscillator dividers/phase shifters and selectable high/low-side injection for frequency plan flexibility
• On-chip second local oscillator
• Separate enable lines for transmit, receive, and synthesizer modes for power management
• 48-pin Thin Quad Flat Pack (TQFP) package (7mm x 7mm)

APPLICATIONs
• GSM900/DCS1800/PCS1900 digital cellular telephony
• Multi-mode, multi-band terminals