Hi all,
I'm designing an amplifier on a PCB, doing it myself with just some FR4 boards. I was wondering how careful I should be about impedance matching along traces. Should I be really strict and maintain a constant trace width everywhere, or is a variation of about .5mm going to cause reflections and such. My traces are about 1.01mm wide but go up to 1.25mm in some places. I'm just worried that I'm going to run into oscillation unless I keep a uniform trace width.
In addition, how strict are ICs in impedance matching? I can't seem to find documentation on the IC datasheet on the functionality of the chip if it isn't matched to a 50 ohm trace or anything.
If anyone could link to impedance matching in PCBs documentation/guides, I would appreciate it.
Thanks for your help!
I'm designing an amplifier on a PCB, doing it myself with just some FR4 boards. I was wondering how careful I should be about impedance matching along traces. Should I be really strict and maintain a constant trace width everywhere, or is a variation of about .5mm going to cause reflections and such. My traces are about 1.01mm wide but go up to 1.25mm in some places. I'm just worried that I'm going to run into oscillation unless I keep a uniform trace width.
In addition, how strict are ICs in impedance matching? I can't seem to find documentation on the IC datasheet on the functionality of the chip if it isn't matched to a 50 ohm trace or anything.
If anyone could link to impedance matching in PCBs documentation/guides, I would appreciate it.
Thanks for your help!