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ZNBG3110 - FET BIAS CONTROLLER WITH POLARISATION SWITCH AND TONE DETECTION

General 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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Full PDF Text Transcription for ZNBG3110 (Reference)

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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 requireme...

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ION 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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