Features: • Dual RF Ports for 900MHz and 1900MHz• AGC Amplifier with 90dB of Variable Gain, Fully Compensated for Temperature• On-chip Active Filter. Removes the Requirement for External IF SAW Filter• High Power 900MHz and 1900MHz Output Stages• Quadrature Modulator&...
MGCT04: Features: • Dual RF Ports for 900MHz and 1900MHz• AGC Amplifier with 90dB of Variable Gain, Fully Compensated for Temperature• On-chip Active Filter. Removes the Requirement for Ex...
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The MGCT04 circuit is designed for use in dual band, dual mode cellular 900MHz/PCS1900MHzmobile phones. MGCT04 can be used for both TDMA/AMPS or CDMA/AMPS systems. The MGCT04 is compatible with baseband and mixed signal interface circuits from Zarlink Semiconductor and other manufacturers.System costs have been kept to a minimum by removing the requirement for an additional SAW filter in the transmit IF path. The AGC has been split between RF and IF sections to reduce noise and a low pass filter has been included before the IF variable gain amplifier to remove spurious products produced in the modulator.