8284 Datasheet (Allegro MicroSystems) - TWO-OUTPUT LNB SUPPLY AND CONTROL-VOLTAGE REGULATOR

8284, TWO-OUTPUT LNB SUPPLY AND CONTROL-VOLTAGE REGULATOR

The ENT (Tone Enable) terminal activates the internal tone signal, modulating the dc output with a ±0.3 V, 22 kHz symmetrical waveform.

The internal oscillator is factory trimmed to provide a tone of 22 kHz ± 2 kHz.

No further adjustment is required.

The internal oscillator operates the buck conver

8284 ADVANCE INFORMATION (Subject to change without notice) December 22, 2000 TWO-OUTPUT LNB SUPPLY AND CONTROL-VOLTAGE REGULATOR Intended for analog and digital satellite receivers, the low noise block converter regulator (LNBR) is a monolithic linear and switching voltage regulator designed to provide power and interface signals to the LNB downconverter via the coaxial cable.

Because most satellite receivers have two antenna ports, the output voltage of the regulator is available at one of tw

8284 Features

* I I I I I I I I I I Complete Interface for Two LNBs Remote Supply and Control LNB Selection and Stand-By Function Built-In Tone Oscillator Factory Trimmed to 22 kHz, Facilitates DiSEqC™ (a trademark of EUTELSAT) Encoding Full Modulation With No Load Tracking Switch-Mode Power Converter for Lowest Di