Timeline for How to pick correct operational amplifier as unity gain buffer between TLC1543CN and LDR
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 11, 2016 at 23:16 | comment | added | peter | Yes, that looks fine. | |
| Aug 11, 2016 at 12:54 | comment | added | Horttanainen | I think MCP6041 would suit my needs: microchip.com/wwwproducts/en/MCP6041 . Can you confirm this? | |
| Aug 11, 2016 at 9:42 | comment | added | Horttanainen | Thanks! I did not notice that. You were really helpful. | |
| Aug 11, 2016 at 9:40 | comment | added | peter | No need, Microchip still offers PDIP packages. The selector allows you to choose packages in its last column. | |
| Aug 11, 2016 at 9:25 | comment | added | Horttanainen | Uh oh. Those are very small components. I can barely handle the precision required to solder header to my 16x2 lcd, but using components of that size seems impossible. Do I need some kind of mount? | |
| Aug 11, 2016 at 8:36 | comment | added | peter | Yes, hindsight is a well known fenomena, especially when interpreting data-sheets. Have a look [at Microchip's opamps](www.microchip.com/opamp) for a parametric selection chart. Also the the Fairchild FAN4174/4274 comes to mind (SOT23). | |
| Aug 11, 2016 at 7:58 | comment | added | Horttanainen | Thanks for your comprehensive answer and especially for pointing out that I would lose resolution due to divider cutting half of the supply-voltage. I now know how to pick my op amp myself, but usually when I think I know everything and make the order I notice something missing when the item arrives. For example this project: I ordered LDR and realized that there is no analog input on 8051. Then I ordered this adc and afterwards noticed that the source resistance was too high. Would you like to suggest me a suitable op amp model for this project so that I would not need to order any more items | |
| Aug 11, 2016 at 7:40 | vote | accept | Horttanainen | ||
| Aug 10, 2016 at 23:01 | history | answered | peter | CC BY-SA 3.0 |