AnsweredAssumed Answered

Use OP AMP(AD797) as DAC(AD5445) output buffer

Question asked by williamchen on Jul 12, 2011
Latest reply on Jul 15, 2011 by ChrisH

Dear all,

 

Please help me:

I want to use an OP AMP(AD797) as the buffer of DAC(AD5445).

We need Positive output voltage (0~3.3V) , but the reference design use one more OP AMP and LDO (ADR03).

I just want use just one OP AMP as I-to-V converter.

 

I found this configuration:

NON-INVERT.png

 

My question:

(1) RL is need?

(2) Pin RFB connect to ?

 

Is the following scheme OK?

 

Buffer.jpg

 

 

 

 

Thank you in advance!

 

Best Wishes,

William

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