??? 12/20/04 07:42 Read: times Msg Score: -1 -1 Off-Topic |
#83494 - want noise reduction method! |
i have 8 channel signal conditioning board, on which the
signal is pass through pre amplify->filter->final amplify->output all channels are identical in schmatic,on pcb board,for the final amplify stage,i use 2 quad package amplifers(TI's opa4277), one 4277 placed more closed to output( here named IC1) than another(IC2).the pcb traces from IC2 to output are about 1.5 times longer than that of IC1. i measured the output noise of the opa4277 by given a DC,and found that the Vp-p is about 10mV for IC1 and 20mV for IC2. due to space constraint,i can't make the traces equal,but i wonder if there's any method to reduce the output noise of ic2 to the same of ic1? Best Regards |
Topic | Author | Date |
want noise reduction method! | 01/01/70 00:00 | |
RE:Want noise reduction method! | 01/01/70 00:00 | |
FAQ | 01/01/70 00:00 | |
My car makes pling pling... | 01/01/70 00:00 | |
sorry for insufficient detail | 01/01/70 00:00 | |
But we need them... | 01/01/70 00:00 | |
more detail | 01/01/70 00:00 | |
How looks the 'noise' like? | 01/01/70 00:00 | |
noise performance decription | 01/01/70 00:00 | |
Manufacturing tolerances | 01/01/70 00:00 | |
'scope ground probe![]() | 01/01/70 00:00 | |
what micro? | 01/01/70 00:00 | |
is it necessary | 01/01/70 00:00 | |
Yes, it is! | 01/01/70 00:00 |