need a help about OP-AMP

lilly

Other Parts Discussed in Thread: MSP430F4619, OPA211, OPA725, OPA827, OPA734, OPA703

Hi everyone!

I need your help with the MSP430FG4619

Actually i want 0-10V for my application but MSP o/p is 3.6V so iam using here RRIO amplifier but MSP430F4619 has already internal 3 op-amps

so plz tell me is it necessary to connect externally RRIO ? i dnt knw wt i do and iam ne to this MSP430 stuff

over 14 years ago

0 Matthew Hann over 14 years ago

TI__Expert 7185 points

Suman,

You will have to attenuate your input signal before interfacing with the MSP430. You can use the OPA703 for this purpose, but if you need better accuracy you can go with the OPA725 or the OPA734. All of these devices require a +12V supply; however, if you have dual supplies available you can use something like the OPA211 or OPA827 to attenuate your 0-10V input about 5x before going to the uC.

Matt

0 lilly over 14 years ago in reply to Matthew Hann

Prodigy 155 points

tnx Matt

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need a help about OP-AMP