www.
DataSheet4U.
com PRODUCT SUMMARY SKY74702: Transmitter for CDMA Applications Applications • CDMA phones in the cellular band: ⎯ CDMA-US ⎯ CDMA-Japan The signal enters the chip as a baseband I/Q signal, which is upconverted by an I/Q quadrature modulator.
The resulting signal is fed through a VGA to provide variable output power.
After leaving the open collector output of the VGA, the signal enters a switch matrix.
This switch matrix allows the signal to be routed through an external filter, or it can be filtered by the tuned collector load and passed directly to the UHF image reject mixer.
The image reject mixer is internally connected to the PA driver.
The mixer driver combination has ...

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