LNBP is the integrated solution for supplying/interfacing satellite LNB modules. It gives good performances in a simple and economical way, with a minimum use of external components. It is comprised of functions that realize LNB supplying/interfacing in accordance to the international standards.
The document introduces the LNBP, an integrated circuit designed to supply power and control signals for Low Noise Block (LNB) modules in satellite receiver systems. It replaces discrete components by offering functions such as voltage regulation, polarization switching, and line length compensation within a simple and economical package.
Key functional blocks include an oscillator for tone generation, output port selection for dual-dish systems, automatic input voltage selection to minimize power dissipation, and thermal overload protection. The note details how the device manages DC voltage drops over long coaxial cables and provides diagnostic signals via the OLF pin.
The OSEL (OUTPUT PORT SELECTION) selects between the LNBA and LNBB outputs to drive a dual-dish system.
The line length compensation function increases the output voltage by about 1V when the LCC pin is set high.