ZNBG3000 Просмотр технического описания (PDF) - Diodes Incorporated.

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ZNBG3000

FET BIAS CONTROLLER

Diodes Incorporated. 

ZNBG3000

ZNBG3001

APPLICATIONS INFORMATION (Continued)

The ZNBG devices have been designed to protect the external FETs from adverse operating

conditions. With a JFET connected to any bias circuit, the gate output voltage of the bias circuit

can not exceed the range -3.5V to 0.7V, under any conditions including powerup and powerdown

transients. Should the negative bias generator be shorted or overloaded so that the drain current

of the external FETs can no longer be controlled, the drain supply to FETs is shut down to avoid

damage to the FETs by excessive drain current.

The following diagram show the ZNBG3000/1 in typical LNB applications.

Single in/Single out C band LNB block diagram

4-143

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