SINGLE LNB–BIAS, CONTROL AND POWER MANAGEMENT SOLUTION

DESCRIPTION
The UTC L8221 is a single chip power management and control solution for LNB’s. The highly integrated solution provides all the required FET and mixer bias, control detection and decoding, local oscillator switching and a stable power supply for the IF amplifier and additional support functions. Being at the heart of the LNB monitoring the control, power management and environmental conditions the UTC L8221 is able to provide reliable solution eliminating effects such as false switching and over loading.

FEATURES
* Single chip LNB bias, control and power management
* 22kHz tone detector with signal rejection for band switching
* Zero Gate FET switching
* Integrated regulated supply for LNB
* Voltage detection for polarization switching
* Programmable mixer and FET bias
* Single pin for supply and control
* No external filtering required
* Temperature compensated protected FET bias