topic MMA9553 Capacitors? in Sensors https://community.nxp.com/t5/Sensors/MMA9553-Capacitors/m-p/384827#M1355 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P></P><P>In the datasheet mma955xL.pdf at <SPAN style="text-decoration: underline;"><STRONG>§ 3.4.3</STRONG></SPAN> it is suggested to use few capacitors and a ferrite bead. </P><P></P><P>Are the double caps (<STRONG>C1+C2</STRONG> and <STRONG>C3+C4</STRONG>) required? or with a single will be ok (just <STRONG>C1</STRONG> and <STRONG>C3</STRONG>)?</P><P></P><P>Also, can you please provide some more details on the ferrite? Could it be replaced with pcb trace?</P><P></P><P>Thank you, </P><P></P><P>kind regards</P><P>Oleh</P></BODY></HTML> Tue, 03 Feb 2026 22:50:18 GMT olehsky 2026-02-03T22:50:18Z MMA9553 Capacitors? https://community.nxp.com/t5/Sensors/MMA9553-Capacitors/m-p/384827#M1355 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P></P><P>In the datasheet mma955xL.pdf at <SPAN style="text-decoration: underline;"><STRONG>§ 3.4.3</STRONG></SPAN> it is suggested to use few capacitors and a ferrite bead. </P><P></P><P>Are the double caps (<STRONG>C1+C2</STRONG> and <STRONG>C3+C4</STRONG>) required? or with a single will be ok (just <STRONG>C1</STRONG> and <STRONG>C3</STRONG>)?</P><P></P><P>Also, can you please provide some more details on the ferrite? Could it be replaced with pcb trace?</P><P></P><P>Thank you, </P><P></P><P>kind regards</P><P>Oleh</P></BODY></HTML> Tue, 03 Feb 2026 22:50:18 GMT https://community.nxp.com/t5/Sensors/MMA9553-Capacitors/m-p/384827#M1355 olehsky 2026-02-03T22:50:18Z Re: MMA9553 Capacitors? https://community.nxp.com/t5/Sensors/MMA9553-Capacitors/m-p/384828#M1356 <HTML><HEAD></HEAD><BODY><P>Hello Oleh,</P><P></P><P>I'd rather recommend you to use the capacitors shown in the recommended circuit, they're decoupling capacitors, if you remove the 0.1uF caps, high frequency noise might not be filtered.</P><P></P><P>Regarding the ferrite, you can use a 10uH inductor and yes, you can replace it with a PCB trace if properly designed.</P><P></P><P>Josh</P></BODY></HTML> Fri, 07 Nov 2014 18:17:47 GMT https://community.nxp.com/t5/Sensors/MMA9553-Capacitors/m-p/384828#M1356 Joshevelle 2014-11-07T18:17:47Z