8283 Datasheet (Allegro MicroSystems) - LNB SUPPLY AND CONTROL-VOLTAGE REGULATOR

8283, 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 convert

8283 PRELIMINARY INFORMATION (Subject to change without notice) November 21, 2000 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 down converter via the coaxial cable.

If the device is in stand-by mode (EN terminal LOW), the regulator output is disabled, allowing the antenna downconverters t

8283 Features

* I I I I I I I I I I Short-Circuit Protected Bypass Function for Slave Operation 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