ive some problem with my designed multiplexer card, i attach the schematic, see adg5404.jpg.
the address is set to 0:
if i switch +24V on out_1 and measure the results on out_mplex_1 and out_mplex_2,
now i get some heavy spark on the out_mplex_2, see osci_1.jpg.
the address is set to 1:
if i switch +24V on out_1 and measure the results on out_mplex_2 and out_mplex_3,
now i get some little spark on the out_mplex_3, see osci_2.jpg.
is this an design error?
why is the spark on out_mplex_2 such high?
some hints for me?
thanks a lot
Initially looking at your plots what comes to mind is switch charge injection effects. I have attached an FAQ that has some Q&A on glitches caused by charge injection. An experiment to do would be to increase the shunt capacitance on the output and see if it helps.