| ??? 06/22/07 06:07 Read: times |
#141151 - Using a multiplexer Responding to: ???'s previous message |
You need to select your input before starting the ADC, then select the next channel after the current conversion has finished. If you have any capacitance between the mutliplexer and the ADC then you have to wait for that capacitance to charge/discharge before starting another ADC conversion. Otherwise you'll find that you get interaction between your multiplexer inputs. |
| Topic | Author | Date |
| ADC0804 and analog mux 4051 help | 01/01/70 00:00 | |
| Source impedance driving the CD4051? | 01/01/70 00:00 | |
| what is "Source impedance driving"? | 01/01/70 00:00 | |
| Source impedance | 01/01/70 00:00 | |
| RC | 01/01/70 00:00 | |
| I'm using just 10K pots | 01/01/70 00:00 | |
| I would wait 3.5µsec | 01/01/70 00:00 | |
| Using a multiplexer | 01/01/70 00:00 | |
| Crosstalk/Interacting is the problem, need help | 01/01/70 00:00 | |
| Do you use buffers? | 01/01/70 00:00 | |
| No, just pots connected to inputs of 4051, my code | 01/01/70 00:00 | |
| Why add complexity? | 01/01/70 00:00 | |
To make it work?? | 01/01/70 00:00 |