Author Topic: Any 3.3v friendly opamp?  (Read 6428 times)

potul

Any 3.3v friendly opamp?
« on: February 26, 2011, 06:04:12 AM »
Hi,

I'm wondering if there is any opamp that would be happy being powered with 3.3v. I'm using 3.3 to power a dspic, and as I need to add some signal conditioning/filtering, I was wondering if I could power the opamps with the same voltage. This would make my life easier.... :)

Potul

Hides-His-Eyes

Re: Any 3.3v friendly opamp?
« Reply #1 on: February 26, 2011, 06:46:05 AM »
You're using a 3v3 power supply, not a regulator? Or are you worried about an op-amp on 5/9v giving out more than the PIC can take?

free electron

Re: Any 3.3v friendly opamp?
« Reply #2 on: February 26, 2011, 07:28:22 AM »
Some examples:

TI LMV931..4, LMV722
AD8506
Microchip MCP6001..4 - available also in standard TH packages.


potul

Re: Any 3.3v friendly opamp?
« Reply #3 on: February 26, 2011, 05:24:20 PM »
You're using a 3v3 power supply, not a regulator? Or are you worried about an op-amp on 5/9v giving out more than the PIC can take?

I'm using a regulator, but if I can simplify and use 3.3v everywhere I ensure I will never feed more than 3.3 to the PIC and simplify a little.

potul

Re: Any 3.3v friendly opamp?
« Reply #4 on: February 26, 2011, 05:24:59 PM »
Some examples:

TI LMV931..4, LMV722
AD8506
Microchip MCP6001..4 - available also in standard TH packages.



Thanks for the information!

Hides-His-Eyes

Re: Any 3.3v friendly opamp?
« Reply #5 on: February 26, 2011, 05:57:42 PM »
You're using a 3v3 power supply, not a regulator? Or are you worried about an op-amp on 5/9v giving out more than the PIC can take?

I'm using a regulator, but if I can simplify and use 3.3v everywhere I ensure I will never feed more than 3.3 to the PIC and simplify a little.


ok, well remember to watch your grounding. :)