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SKY74702 Datasheet Transmitter for CDMA Applications

Manufacturer: Skyworks Solutions

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Overview

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.

Key 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 (external tank), 200 to 700 MHz.
  • VHF VCO switching to increase the talk time of the radio.
  • Two separate PLL synthesizers provide dual-loop, multi-band operation and power-save mode for bo.

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