Timeline for Correct use of transimpedance amp
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 29, 2018 at 18:43 | vote | accept | Jeppe Christensen | ||
| Nov 28, 2018 at 21:29 | comment | added | Jeppe Christensen | ah, i see ! so thats why we do it reverse biased usually? because the mA difference is easier to see detailed? | |
| Nov 28, 2018 at 20:46 | comment | added | The Photon | @JeppeChristensen, yes but you need an op-amp with very good rail-to-rail input and output if you want to be able to measure small optical signals. | |
| Nov 28, 2018 at 20:02 | comment | added | Jeppe Christensen | my.vanderbilt.edu/imaginginstrumentation2016/2016/01/… could something like this work as well? - this, I somewhat understand. | |
| Nov 28, 2018 at 19:44 | comment | added | Jeppe Christensen | I see, but I need more knowledge in order to understand what's going on here. it's extremely intimidating, as I don't have a background in this. | |
| Nov 28, 2018 at 19:06 | comment | added | The Photon | @JeppeChristensen, Fig 1 here shows a reasonable TIA configuration with a single supply. You might want to use your ADC's reference voltage as the input to the non-inverting pin rather than a resistor divider. | |
| Nov 28, 2018 at 18:47 | comment | added | Jeppe Christensen | So what you suggest, is turning the op-amp around, and use another amp like this: dk.farnell.com/microchip/mcp6041-e-p/… ? | |
| Nov 28, 2018 at 18:43 | history | edited | The Photon | CC BY-SA 4.0 |
added 45 characters in body
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| Nov 28, 2018 at 17:40 | history | answered | The Photon | CC BY-SA 4.0 |