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AT1512
Preliminary product Information
FET BIAS CONTROLLER AND TONE DETECTION
Features
•Provides bias for GaAs and HEMT FETs •Drives up to 3 FETs with Dynamic FET protection •Regulated negative rail generator requires only 2 external
capacitors •Drain current set by external resistor •Choice in drain
voltage •Wide supply
voltage range •Polarisation switch for LNBs - supporting zero volt gate switching topology •22kHz tone detection for band switching •Compliant with ASTRA control specifications •SSOP-20 surface mount package
Description
The AT1512 includes bias circuits to drive up to 3 external FETs.
A control input to the device selects either one of two FETs as oper...