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ZNBG3000Q16

Zetex Semiconductors
Part Number ZNBG3000Q16
Manufacturer Zetex Semiconductors
Description FET BIAS CONTROLLER
Published Apr 17, 2005
Detailed Description FET BIAS CONTROLLER ISSUE 1- AUGUST 1998 DEVICE DESCRIPTION The ZNBG series of devices are designed to meet the bias req...
Datasheet PDF File ZNBG3000Q16 PDF File

ZNBG3000Q16
ZNBG3000Q16

Overview
FET BIAS CONTROLLER ISSUE 1- AUGUST 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 3 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 ZNBG3000/1 contains three bias stages.
A single resistor allows FET drain current to be set to the desired level.
The series also offers the choice of drain voltage to be set for the FETs, the ZNBG3000 gives 2.
2 volts drain whilst the ZNBG3001 gives 2 volts.
These devices are unconditionally stable over the full working temperature with the FETs in place, subject to the inclusion of the recommen...


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