| ??? 05/28/09 15:36 Read: times |
#165680 - output resistance... Responding to: ???'s previous message |
Per Westermark said:
Your choices depends a bit on the output resistance of the sensor, i.e. how much the sensor voltage will vary with load - your voltage divider will have to draw a lot more current than the input current of the ADC.
If the sensor can't handle the load, you may have to buffer the signal with an OP-Amp. Thanks for the reply. So, without wishing to sound too dumb (I'm not much of an analogue buff), how would I determine the output resistance of the sensor - the datasheet doesn't mention it as such. |
| Topic | Author | Date |
| Proportional voltage conversion... | 01/01/70 00:00 | |
| Depends on output resistance | 01/01/70 00:00 | |
| output resistance... | 01/01/70 00:00 | |
| maybe | 01/01/70 00:00 | |
| As above... | 01/01/70 00:00 | |
| this will approximate it | 01/01/70 00:00 | |
Thanks | 01/01/70 00:00 |