znbg3010 Zetex Semiconductors plc., znbg3010 Datasheet - Page 8

• Manufacturer Part Number: znbg3010
• Description: Fet Bias Controller And Polarity Switch
• Manufacturer: Zetex Semiconductors plc.

APPLICATIONS INFORMATION (Continued)
The following block diagram shows the main section of an LNB designed for use with the Astra
series of satellites. The ZNBG3010/11 is the core bias and control element of this circuit. The
ZNBG provides the negative rail, FET bias control and polarisation switch control, with the
minimum of external components. Compared to other discrete component solutions the ZNBG
circuit reduces component count and overall size required.
Single Standard/ Enhanced LNB block diagram.
ZNBG3010
ZNBG3011
4-121