US 12,445,115 B2
Low-pass filter circuit
Marcel van de Gevel, Haarlem (NL); Federico Bruccoleri, Pijnacker (NL); Mark Stoopman, Capelle aan den ijssel (NL); and Koen van Hartingsveldt, Leiderdorp (NL)
Assigned to NXP B.V., Eindhoven (NL)
Filed by NXP B.V., Eindhoven (NL)
Filed on Oct. 23, 2023, as Appl. No. 18/491,846.
Claims priority of application No. 22208038 (EP), filed on Nov. 17, 2022.
Prior Publication US 2024/0171154 A1, May 23, 2024
Int. Cl. H03H 11/04 (2006.01); H03H 7/075 (2006.01)
CPC H03H 11/0422 (2013.01) [H03H 7/075 (2013.01); H03H 2011/0488 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A low-pass filter circuit comprising:
a low-pass filter input terminal;
a low-pass filter output terminal;
a reference terminal;
at least three filter resistors connected in series with each other between the low-pass filter input terminal and the low-pass filter output terminal, such that there is a resistor-connecting-node between each adjacent pair of filter resistors;
a plurality of filter capacitors, one for each of the resistor-connecting-nodes, wherein each of the filter capacitors is connected between an associated resistor-connecting-node and the reference terminal; and
a branch connected in parallel with the at least three filter resistors, wherein the branch comprises a bridging capacitor and a bridging resistor in series with each other;
an output capacitor connected between the low-pass filter output terminal and the reference terminal.