??? 02/09/06 13:38 Read: times |
#109600 - of course not Responding to: ???'s previous message |
Are you sure that all of them are working equally well in a certain application??
Of course not, that is why I said:" However, if I were in high performing analog, it would not be a grab bag issue." One thing I should have added is "for best performance do not select a substantially higher current rating than you need" as illustrated by me having 2 different ferrites in my "grab bag" Kai, peace be with you, I have the impression that every component in a design of yours is carefully calculated and selected. It may be that for your apps (high performing analog?) such is needed. I have, however, found that for my almaost purely digital projcts a lot of components can be "grab bag" with no problem. e.g. why calculate a pullup resistor - any value pulling hard enough and not overloading the port will do. You have no exact (oh, well maybe you do) value of the capacitance of a trace and thus an exact calculation of said resistor can not be made. Thus my grab bag is that for "fast and critical" pullup = 1k or 2k2, "slow and no big deal" pullup = 10k. That works for me. One addition: for IIC pullups I do, indeed, calculate (and then go 1/2). All the above comes down to in most cases uou can use 'grab bag', but know when you can not Erik |