LOW POWER 6 STAGE FET LNA AND MIXER BIAS CONTROLLER

DESCRIPTION

The UTC L8602 is a programmable low power depletion mode FET bias and mixer controller intended primarily for satellite Low Noise Blocks (LNBs). Designed to provide system flexibility the UTC L8602 can be programmed to bias six low noise amplifier (LNA) stages or four LNA and two active mixer stages, allowing the UTC L8602 to be used in several system designs. Combining an advanced IC process and packaging techniques, the UTC L8602 helps minimize power consumption, component cost and PCB area whilst enhancing overall reliability.

FEATURES

* Low quiescent supply current, 1.6mA typical

* Six stage FET bias controller, two configurable as mixer stages

* Operating range of 3.0V to 8.0V

* Amplifier FET drain voltages set at 2.0V, mixer drain voltage set at 0.25V

* Amplifier FET drain current selectable from 0 to 15mA, mixer current from 0 to 7.5mA

* Switchable FET’s for power management

* FET drain voltages and currents held stable over temperature and VCC variations

* FETs protected against overstress during power-up and power-down.

* Internal negative supply generator allowing single supply operation (available for external use)

* Low external component count