| ??? 06/18/05 01:54 Read: times |
#95230 - Reference Voltage Responding to: ???'s previous message |
In most cases its a matter of reading the datasheet carefully. If the datasheet suggests a 2.5V reference then you probably want to stay close to that. Sometimes the manufacturer states explicitly the lowest reference voltage. For your sort of application a 16bit or greater adc is used. Rockby Electronics in Melbourne have some LTC2410 24bit ADC ics at <$6 ea. They are surface mount however, but I have some pcbs that put it out to a 24 pin header that I could send to you. These are fairly easy to interface to a micro and the datasheet shows an application with a Pt100 sensor. |
| Topic | Author | Date |
| Adc Refrence voltages | 01/01/70 00:00 | |
| More details needed... | 01/01/70 00:00 | |
| 1.000.000 volts! | 01/01/70 00:00 | |
| re:noise | 01/01/70 00:00 | |
| adc's | 01/01/70 00:00 | |
| Closer ,but still not enough info | 01/01/70 00:00 | |
| ADC'S | 01/01/70 00:00 | |
| Noise is irrelevant... | 01/01/70 00:00 | |
| Reference Voltage | 01/01/70 00:00 | |
| adc's | 01/01/70 00:00 | |
| re: RTD | 01/01/70 00:00 | |
| adc's | 01/01/70 00:00 | |
| Errr...please clarify | 01/01/70 00:00 | |
| This is wrong | 01/01/70 00:00 | |
| Possibility | 01/01/70 00:00 | |
| adc's | 01/01/70 00:00 | |
Andy's circuit | 01/01/70 00:00 |