SKY74702 Datasheet (Skyworks Solutions) - Transmitter for CDMA Applications

SKY74702, Transmitter for CDMA Applications

The SKY74702 device is a single-supply, monolithic integrated circuit.

It is designed for use in single-mode Code Division Multiple Access (CDMA) cellular voice/data applications including extensions for CDMA-Japan.

The SKY74702 is a highly integrated superheterodyne transmitter that incorporates th

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

SKY74702 Features

* Serial bus interface control

* Low power consumption in all operating modes

* Image reject upconverter replaces external RF SAW filter

* Transmit power control with 90 dB dynamic range

* Variable gain RF block for improved in-band SNR

* VHF VCO (exte