| ??? 07/25/06 08:23 Read: times |
#121013 - That's not good Responding to: ???'s previous message |
Flowing enough current into the input clamping diodes to raise the chip supply rail isn't good for the chip. It may be acceptable to use a resistor to limit the current when the signal is over-voltage, but if the resistor is big enough to perform this function then it is likely to introduce significant errors. I would suggest that some other form of clamping or limiting needs to be incorporated in your RTD example. |
| Topic | Author | Date |
| Reistor in series in signal from Amp to ADC. | 01/01/70 00:00 | |
| You forgot the other Question | 01/01/70 00:00 | |
| Read the app notes | 01/01/70 00:00 | |
| What ADC? What application? | 01/01/70 00:00 | |
| Re: Application. | 01/01/70 00:00 | |
| That's not good | 01/01/70 00:00 | |
| a much more elaborate protection scheme must be im | 01/01/70 00:00 | |
| Re: RTD & high voltage output. | 01/01/70 00:00 | |
| what about a zener across the RTD? | 01/01/70 00:00 | |
| Some questions | 01/01/70 00:00 | |
| ADC details? | 01/01/70 00:00 | |
| datasheet does not contain because | 01/01/70 00:00 | |
| ADC details still missing! | 01/01/70 00:00 | |
| Yes ADC details Missing,. | 01/01/70 00:00 | |
| That's what we need the details for... | 01/01/70 00:00 | |
| what detail? | 01/01/70 00:00 | |
| Analog input circuitry and timing diagram | 01/01/70 00:00 | |
| Forum Power. | 01/01/70 00:00 | |
| Link? | 01/01/70 00:00 | |
| Re Link. | 01/01/70 00:00 | |
| if you use them, sign up | 01/01/70 00:00 | |
Thanks | 01/01/70 00:00 |