| ??? 10/07/08 10:46 Read: times |
#158894 - Analog input signal conditioning |
Some time back I had a thread on subject ( http://www.8052.com/forum/rea...5151)using the Silabs C8051F020
MK had suggested an input attenuator circuit to handle +/-10V and convert same to 0-2.5V using resistors. I have made a circuit based on same, using Op-Amps as buffers and for three channels ( likely to expand to six channels ) 
I am planning to use +/- 5V to power the unity gain buffers (like OP07). The "2.5Vref IN" is from the MCU Vref pin. I suppose the idea will work out OK ? Or are there any traps to watch out? Too many op-amps for the job ?? (Note : Please ignore the wrong input polarity on the Vout buffer ) Thanks Raghu |
| Topic | Author | Date |
| Analog input signal conditioning | 01/01/70 00:00 | |
| voltage follower | 01/01/70 00:00 | |
| Good link that.. | 01/01/70 00:00 | |
| Wont work | 01/01/70 00:00 | |
| It should have been +/- 15V | 01/01/70 00:00 | |
| Excel automates resistor calculation | 01/01/70 00:00 | |
| Thanks. | 01/01/70 00:00 | |
| I would eventually omit the input buffers... | 01/01/70 00:00 | |
| Now that is worrying.. | 01/01/70 00:00 | |
| What I meant... | 01/01/70 00:00 | |
| Inputs swapped | 01/01/70 00:00 | |
| Extremely sorry for the goof up. | 01/01/70 00:00 | |
| Some hints... | 01/01/70 00:00 | |
| Just in time... | 01/01/70 00:00 | |
| As long as... | 01/01/70 00:00 | |
| Yes I understand. | 01/01/70 00:00 | |
Active clamp... | 01/01/70 00:00 |