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MAX4473

Part Number	MAX4473
Manufacturer	Maxim
Description	Low-Cost / Low-Voltage / PA Power Control Amplifier
Published	Jun 13, 2005
Detailed Description	19-1448; Rev 0; 3/99 Low-Cost, Low-Voltage, PA Power Control Amplifier for GSM Applications in 8-Pin µMAX General Descr...
Datasheet	MAX4473 PDF File

Overview

19-1448; Rev 0; 3/99 Low-Cost, Low-Voltage, PA Power Control Amplifier for GSM Applications in 8-Pin µMAX General Description The MAX4473 PA power control IC is intended for closed-loop bias control of GSM power amplifiers.
The device facilitates accurate control of the current delivered to the power amplifier (PA) via a control voltage.
The error amplifier senses the voltage drop across an external current-sense resistor placed between the supply and the PA.
The output of the error amplifier adjusts the PA gain until the current is proportional to the power control voltage applied to the MAX4473.
This unique topology is useful in time-division-multipleaccess (TDMA) systems, such as GSM, wh...

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