AT1511 - Aimtron Technology

AT1511 FET BIAS CONTROLLER AND TONE DETECTION

The AT1511 includes bias circuits to drive up to three external FETs. A control input to the device selects either one of two FETs as operational using 0V gate switching methodology, the third FET is permanently active. This feature is particularly used as an LNB polarisation switch. Also specific to LNB applications is the enhanced 22kHz tone detection and .

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 - supporting zero volt gate switching topology.
•22kHz tone detection for band switching
•Compliant with ASTRA control specifications
•SSOP surface mount package Description The AT1511 includes bias circuits to drive up to three external FETs. A control input to the device selects either one of two FETs as operational.