| ??? 12/25/04 00:36 Read: times |
#83824 - 'scope ground probe Responding to: ???'s previous message |
Jin Li said:
it is a mix with broad band noise and spike,but the both the noise level of broad band and spike is almost twice in IC2(one opa4277) than IC1(another opa4277), i measure the input noise level of both IC2 and IC1,and found that they are similar,only the output noise level has big difference. this is the thing quite curious to me. since they have the same configuration in schmatic. I assume you're using a 'scope measure your noise levels. Please correct me if I'm wrong! What have you connected your probe's ground lead to? How long is the ground lead? -a |
| 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 |