Tool/software:
Hello,
We are integrating the 1432 into a design near to a GPS module. We understand that the internal carrier of the 1432 is operating around 25MHz. We are balancing the tight confines within which this has to be implemented with careful layout and any other precautions we can muster to protect the GPS module from conducted interference.
Given the stress that is given to layout and appropriate decoupling and use of ferrites on the power path we have two questions we would appreciate perspective/clarification about.
1. Would using higher impedance ferrites provide any measurable improvement on conducted signals on the power path? In other words, we can select more aggressive components there. If the recommended parts from the datasheet are sufficient we won't deviate.
2. Is there any concern about conducted energy from the D & R pins of the part? Would adding ferrites on these signal paths demonstrate any benefit in this regard, or are these pins pretty clean? We would be operating at relatively low data rates so are not concerned with a small bit of signal/transition degradation adding these might cause.
What would be the advice of the community?
Much thanks!
