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ZNBG3111 - FET BIAS CONTROLLER WITH POLARISATION SWITCH AND TONE DETECTION

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.

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Datasheet Details

Part number ZNBG3111
Manufacturer Zetex Semiconductors
File Size 657.65 KB
Description FET BIAS CONTROLLER WITH POLARISATION SWITCH AND TONE DETECTION
Datasheet download datasheet ZNBG3111 Datasheet
Additional preview pages of the ZNBG3111 datasheet.

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Full PDF Text Transcription

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FET BIAS CONTROLLER WITH POLARISATION SWITCH AND TONE DETECTION ISSUE 2 - APRIL 1998 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 ZNBG3110/11 includes bias circuits to drive up to three external FETs.
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