Hi,
In my project I can see ripple on the 3.3v line to a GPS engine, I know these things are sensitive to ripple and so I want to keep it as low as possible but I don't want to be trying to do something I will never achieve, like 0mv!!
Currently it's about 40mv of ripple, I have 0.1uf ceramic caps very close to all IC's and appropriate caps on regs, and this is a battery device so supply is clean. is there something more I can do? Is there a little component / IC you can stick between the supply and VCC pin of a device to smooth it?
P.S. Can't find acceptable supply ripple in PFG for the leadtek 9805-III
Thx
In my project I can see ripple on the 3.3v line to a GPS engine, I know these things are sensitive to ripple and so I want to keep it as low as possible but I don't want to be trying to do something I will never achieve, like 0mv!!
Currently it's about 40mv of ripple, I have 0.1uf ceramic caps very close to all IC's and appropriate caps on regs, and this is a battery device so supply is clean. is there something more I can do? Is there a little component / IC you can stick between the supply and VCC pin of a device to smooth it?
P.S. Can't find acceptable supply ripple in PFG for the leadtek 9805-III
Thx