| ??? 12/17/07 20:42 Read: times |
#148414 - BANG!! Responding to: ???'s previous message |
Juan Carlos said:
Erik some times my voltage readings could be -20 VDC instead of 20VDC. Read the Datasheet! The maximum voltage on any pin is 3.5V - see Table 10 on p56; The maximum A/D input voltage allowed is Vss+0.2V - see Table 16 on p67. If you apply +20V or -20V direct to the chip you will blow it up!! |
| Topic | Author | Date |
| LPC936 with External A/D | 01/01/70 00:00 | |
| Another ADC or a multiplexer | 01/01/70 00:00 | |
| Every 2 seconds | 01/01/70 00:00 | |
| what type of analog signal you are talking about? | 01/01/70 00:00 | |
| I would not, but | 01/01/70 00:00 | |
| Easy | 01/01/70 00:00 | |
| a corrective addition | 01/01/70 00:00 | |
| 74HC4051/74HC4052/74HC4053 | 01/01/70 00:00 | |
| BUT | 01/01/70 00:00 | |
| Then again | 01/01/70 00:00 | |
| Negative readings | 01/01/70 00:00 | |
| Datasheet! | 01/01/70 00:00 | |
| can you please be specific | 01/01/70 00:00 | |
| negative readings? | 01/01/70 00:00 | |
| Not allowed? | 01/01/70 00:00 | |
| Negative ADC readings - again | 01/01/70 00:00 | |
| Like this | 01/01/70 00:00 | |
| I do not understand | 01/01/70 00:00 | |
| BANG!! | 01/01/70 00:00 | |
| In General | 01/01/70 00:00 | |
| Another BANG! | 01/01/70 00:00 | |
| I assumed | 01/01/70 00:00 | |
| Looks like it cannot be done. | 01/01/70 00:00 | |
| you can | 01/01/70 00:00 | |
| Exlain | 01/01/70 00:00 | |
| OK, like this | 01/01/70 00:00 | |
| Thanks | 01/01/70 00:00 | |
or you can use opamp as non inverting summing amp. | 01/01/70 00:00 |