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.

FEATURES

• Provides bias for GaAs and HEMT FETs

• Drives up to three FETs

• Dynamic FET protection

• Drain current set by external resistor

• Regulated negative rail generator

requires only 2 external capacitors

• Choice in drain voltage

• Wide supply voltage range

• Polarisation switch for LNBs

• 22KHz tone detection for band

switching

• Compliant with ASTRA control

specifications

• QSOP surface mount package

APPLICATIONS

• Satellite receiver LNBs

• Private mobile radio (PMR)

• Cellular telephones