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TA0022

Part Number	TA0022
Manufacturer	RF Micro Devices
Description	Low Cost HBT Upconverters
Published	Mar 4, 2015
Detailed Description	TA0022 TA0022 RF9938: Low-Cost HBT Upconverters for CDMA Transmitter ICs ...
Datasheet	TA0022 PDF File

Overview

TA0022 TA0022 RF9938: Low-Cost HBT Upconverters for CDMA Transmitter ICs To support the increasing demand for Code Division Multiple Access (CDMA), the latest digital communication technology in cellular industry, RF Micro Devices (RFMD) developed CDMA chip sets for both receiver and transmit chain.
The CDMA chip sets were designed and manufactured on an advanced GaAs Heterojunction Bipolar Transistor (HBT) process from TRW.
The HBT process offers several advantages over other processes such as high Ft, low noise transistors, and process consistency.
The CDMA program is two-fold.
The first chip set, which was designed for cellular band, consists of a receive and a transmit IF AGC amps (RF9907 and RF9909), a receive LNA/ mixer (RF9906), and a transmit upconverter (RF9908).
The second chip set, designed for PCS band, consists of a receive LNA/mixer (RF9936) and a transmit upconverter (RF9938).
This article describes the two trans...

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