OP amp scaling voltage

Status
Not open for further replies.
M

MangoKid

Junior Member level 1
Joined
Dec 8, 2010
Messages
17
Helped
3
Reputation
6
Reaction score
3
Trophy points
1,283
Visit site
Activity points
1,393
Hey all,

I have been trying to create a circuit to scale a 0 - 3.3v sensor to a 0 -5v signal. Any suggestions on how to do this. I have been trying some Op amp circuits but haven't really gotten anywhere yet.

Thanks!
 

Thanks Peter,

I have tried this circuit with little success. I get the voltage from the divider on the output.

 

Yes I understand that i need and Op amp circuit with a specific gain. I have done this successfully in simulation using an "ideal" op amp (the one you have shown in the circuit) now i have to achieve this with a real Op amp
 

Yes, Crutschow is right, I didnt pay attention, you need 0-3,3V to 0-5V and non-inverting opamp circuit. I thought it was 0-5V to 0-3,3V.

Best regards,
Peter

:wink:
 

MangoKid said:
Yes I understand that i need and Op amp circuit with a specific gain. I have done this successfully in simulation using an "ideal" op amp (the one you have shown in the circuit) now i have to achieve this with a real Op amp
Click to expand...
Well originally you said you hadn't gotten anywhere with op amp circuits. :-?

It shouldn't be too difficult if you use a low input offset op amp and the highest signal frequency is well below the Gain-Bandwidth of the op amp. If you have a single 5V supply then the op amp will also need to be an input/output rail-rail type.
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…