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ZNBG3210

Part Number	ZNBG3210
Manufacturer	Zetex Semiconductors
Description	FET BIAS CONTROLLER WITH POLARISATION SWITCH AND TONE DETECTION
Published	Apr 17, 2005
Detailed Description	FET BIAS CONTROLLER WITH POLARISATION SWITCH AND TONE DETECTION ISSUE 2 - FEBRUARY 2000 DEVICE DESCRIPTION The ZNBG seri...
Datasheet	ZNBG3210 PDF File

Overview

FET BIAS CONTROLLER WITH POLARISATION SWITCH AND TONE DETECTION ISSUE 2 - FEBRUARY 2000 DEVICE DESCRIPTION The ZNBG series of devices are designed to meet the bias requirements of GaAs and HEMT FETs commonly used in satellite receiver LNBs, PMR cellular telephones etc.
with a minimum of external components.
With the addition of two capacitors and a resistor the devices provide drain voltage and current control for three external grounded source FETs, generating the regulated negative rail required for FET gate biasing whilst operating from a single supply.
This negative bias, at -3 volts, can also be used to supply other external circuits.
The ZNBG3210/11 includes bias circuits to drive up t...

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