AT1512 detection equivalent, fet bias controller and tone detection.
*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 .
is the enhanced 22kHz tone detection and logic output feature which is used to enable high and low band frequency switch.
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 operational using 0V gate switching topology, the third FET is permanently active. This feature is particularly used as .
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