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RF9908 - CDMA/FM UPCONVERTER/BPSK MODULATOR

Description

The RF9908 is a complete upconverter designed for CDMA/FM cellular applications.

The IC contains a double-balanced mixer stage and an output buffer amplifier stage.

This device may also be used to directly BPSK modulate a carrier.

Features

  • Supports Dual Mode Operation.
  • +8dBm Input/Output Intercept Point.
  • Single 3.6V Power Supply.
  • Internally Matched Inputs and Outputs.
  • Buffered Output.
  • Double-Balanced Mixer IF+ 1 IF- 2 GND 3 LO+ 4 8 RF OUT 7 VCC 6 GND 5 LO- Ordering Information RF9908 RF9908 PCBA CDMA/FM Upconverter/BPSK Modulator Fully Assembled Evaluation Board Functional Block Diagram RF Micro Devices, Inc. 7628 Thorndike Road Greensboro, NC 27409, USA Tel (336) 664 12.

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Datasheet Details

Part number RF9908
Manufacturer RF Micro Devices
File Size 50.69 KB
Description CDMA/FM UPCONVERTER/BPSK MODULATOR
Datasheet download datasheet RF9908 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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RF9908 6 Typical Applications • CDMA/FM Cellular Systems • Supports Dual-Mode AMPS/CDMA • Supports Dual-Mode TACS/CDMA • Commercial and Consumer Systems • 3-Cell Battery-Operated Systems CDMA/FM UPCONVERTER/BPSK MODULATOR Product Description The RF9908 is a complete upconverter designed for CDMA/FM cellular applications. The IC contains a double-balanced mixer stage and an output buffer amplifier stage. This device may also be used to directly BPSK modulate a carrier. The mixer is a Gilbert cell with emitter degeneration resistors to provide high IP3. The output stage is a class-B, push-pull configuration to reduce the overall current and still provide a good 50 Ω output match. The unit operates at 3.6V and does not require any external matching components other than coupling capacitors.
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