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:



My question:

(1) RL is need?

(2) Pin RFB connect to ?


Is the following scheme OK?







Thank you in advance!


Best Wishes,