| ??? 12/23/04 03:26 Read: times |
#83673 - How looks the 'noise' like? Responding to: ???'s previous message |
Hallo Jin,
how looks the noise like? Is it hum (50Hz or 100Hz), or is it spiky with a frequency identical to clock frequency of LTC1064, or is it simple broad band noise? What makes the noise become smaller? Fully disconnecting 250k poti, or fully removing mains supply and instead feeding battery powered supply or fully disconnecting clock coming from AT89C2051 and instead feeding a battery powered clock source? Does the noise level change if you connect ground of probe (multimeter) to signal ground very near to OPA4277? Does any supply voltage show relevant noise? Kai |
| 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 |