ZNBG3118 (Obsolete)

Description

The ZNBG3118 is a bias and control solution designed for Satellite Low Noise Blocks (LNB’s). Providing three bias stages to power control and protect the GaAs or HEMT FET low noise amplifier’s (LNA’s). The ZNBG3118 integrates an accurate voltage detector to select the LNB polarisation channel and an advanced tone detector to select the local oscillator (LO) for band switching.

Feature(s)

Provides bias for up to three GaAs and HEMT FETs

Dynamic FET protection and temperature compensation

Drain current set by external resistor

Regulated negative rail generator requires only 2 external capacitors

Accurate voltage detector and polarisation switch for LNB’s

22kHz tone detection for band switching with rejection of unwanted signals

Band switch supports both Discrete, MIMIC and PLL local oscillators

Compliant with ASTRA control specifications

Low current for power efficient systems

Wide operating supply range of 3.3V to 8V

Application(s)

Single Output LNB’s

Two single type twin LNB’s

Low power LNB’s

PLL Single LNB’s