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RF2628

Part Number	RF2628
Manufacturer	RF Micro Devices
Description	CDMA/FM UPCONVERTER/BPSK MODULATOR
Published	Apr 16, 2005
Detailed Description	RF2628 6 Typical Applications • CDMA/FM Cellular Systems • Supports Dual-Mode AMPS/CDMA • Supports Dual-Mode TACS/CDMA •...
Datasheet	RF2628 PDF File

Overview

RF2628 6 Typical Applications • CDMA/FM Cellular Systems • Supports Dual-Mode AMPS/CDMA • Supports Dual-Mode TACS/CDMA • Commercial and Consumer Systems • Battery-Operated Systems CDMA/FM UPCONVERTER/BPSK MODULATOR Product Description The RF2628 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 a supply voltage of 2.
7V to 5.
0V and does not require any external matching components other than coupling capacitors.
This circuit is designed as part of the RFMD CDMA Chip Set, consisting of a Transmit IF AGC Amp, this Transmit Upconverter, a Receive LNA/Mixer, and a Receive IF AGC Amp.
Optimum ...

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