| ??? 09/07/06 14:01 Read: times |
#123832 - Use a scope to check it Responding to: ???'s previous message |
The AD7862 has a /CS and a /RD line to read the binary result of a conversion. Please take a scope, trigger it with the /RD or /CS line and have a look directly at the outputs of AD7862, while giving 0V to all the analog inputs (by connecting the inputs to analog ground).
Now, you should see a rather stable conversion result of a few LSB, due to unavoidable offset. Result may change by 1LSB. Kai |
| Topic | Author | Date |
| Problem With AD7862 | 01/01/70 00:00 | |
| Reference generator | 01/01/70 00:00 | |
| Reference generator | 01/01/70 00:00 | |
| Try | 01/01/70 00:00 | |
| Thanks Steve | 01/01/70 00:00 | |
| Is this a problem? | 01/01/70 00:00 | |
| Huge Osc | 01/01/70 00:00 | |
| Picture | 01/01/70 00:00 | |
| Ok | 01/01/70 00:00 | |
| Picture | 01/01/70 00:00 | |
| Picture-Jpeg | 01/01/70 00:00 | |
| ? | 01/01/70 00:00 | |
| ? | 01/01/70 00:00 | |
| AD 7900 | 01/01/70 00:00 | |
| Its there... | 01/01/70 00:00 | |
| Sorry | 01/01/70 00:00 | |
| excuse me | 01/01/70 00:00 | |
| What oscillation without averaging? | 01/01/70 00:00 | |
| Averaging! | 01/01/70 00:00 | |
| Do you mean... | 01/01/70 00:00 | |
| No | 01/01/70 00:00 | |
| How did you measure it? | 01/01/70 00:00 | |
| 10mH chokes | 01/01/70 00:00 | |
| agnd and dgnd | 01/01/70 00:00 | |
| Highly unsuited! | 01/01/70 00:00 | |
| Lcd | 01/01/70 00:00 | |
| What do you mean? | 01/01/70 00:00 | |
| jp4 and jp5 | 01/01/70 00:00 | |
| Please explain | 01/01/70 00:00 | |
| Lcd | 01/01/70 00:00 | |
Use a scope to check it | 01/01/70 00:00 | |
| 5k trimmer is not well suited | 01/01/70 00:00 | |
| 5k trimmer is not well suited | 01/01/70 00:00 | |
| What do you mean by "huge oscillation"? | 01/01/70 00:00 | |
| changed to a new part and it doesn't work | 01/01/70 00:00 |