| ??? 07/20/07 17:25 Modified: 07/20/07 17:28 Read: times |
#142100 - Pull-up Responding to: ???'s previous message |
P. said:
what are all ways to interface the op amp to 8051microcontroller
what is the need of pullup resistor? There are millions of ways... The pull-up resistor is often needed, when an OPamp or comparator is used, which has an open-collector- or open-drain-output, like the LM339, for instance. Such schemes were often used in the past to provide a level shifting, when the OPamp or comparator was powered by a supply voltage differing from +5V. More can only be said, if you give us some more details about your application. You get what you give... Kai |
| Topic | Author | Date |
| interface op amp to microcontroller | 01/01/70 00:00 | |
| To do what? | 01/01/70 00:00 | |
| Pull-ups (and Pull-downs) | 01/01/70 00:00 | |
| Op-Amp is irrelevant! | 01/01/70 00:00 | |
| Comparator | 01/01/70 00:00 | |
| Irellevant | 01/01/70 00:00 | |
| I doubt that... | 01/01/70 00:00 | |
| Negative spiral | 01/01/70 00:00 | |
Pull-up | 01/01/70 00:00 |