| ??? 05/27/08 16:04 Read: times |
#155163 - yes Responding to: ???'s previous message |
-And to fine tune to 0-2.5V exactly I change the 3.3K resistor to a precision trimpot. Or is it a bad idea to do this ??
Yes, it is a bad idea, use 0.01% resistors, you will never be able to set a trimpot that accurately. Erik PS what is a precision trimpot???? |
| Topic | Author | Date |
| ADC of Silabs MCU | 01/01/70 00:00 | |
| At best the SiLabs A/D.... | 01/01/70 00:00 | |
| A Simple Attenuator | 01/01/70 00:00 | |
| Tweaking... | 01/01/70 00:00 | |
| Further tweaking.. | 01/01/70 00:00 | |
| yes | 01/01/70 00:00 | |
| I had that coming.. | 01/01/70 00:00 | |
| Drop the Trim | 01/01/70 00:00 | |
| 100% practical with theory | 01/01/70 00:00 | |
| For your A/D Subsystem.... | 01/01/70 00:00 | |
| buffer op-amp | 01/01/70 00:00 | |
| Chosen Op-Amp : CA5420A | 01/01/70 00:00 | |
| Settling time? | 01/01/70 00:00 | |
| My signal is a slowly varying one | 01/01/70 00:00 | |
settling time | 01/01/70 00:00 | |
| internal reference specified from 2.36 to 2.48 V! | 01/01/70 00:00 | |
| do not calibrate if you can avoid it | 01/01/70 00:00 |