Hi all...
The PCM1730 has balanced current outputs labeled as IOUT+ and IOUT-.
The PDF shows a "typical" IV stage which consists of a opamp based IV for each half of the output followed by a summing opamp.
I wish to stick to opamps for the IV (OPA637's), but was wondering if i can use only one half of the output which will cut the number of opamps needed.
I found a web site which shows the same DAC with this output stage:
Will i be comprimsing the quality of the DAC by only using 1/2 of the output like the diagram above?
The PCM1730 has balanced current outputs labeled as IOUT+ and IOUT-.
The PDF shows a "typical" IV stage which consists of a opamp based IV for each half of the output followed by a summing opamp.
I wish to stick to opamps for the IV (OPA637's), but was wondering if i can use only one half of the output which will cut the number of opamps needed.
I found a web site which shows the same DAC with this output stage:
An externally hosted image should be here but it was not working when we last tested it.
Will i be comprimsing the quality of the DAC by only using 1/2 of the output like the diagram above?
Not quite related, but have a look at this thread I tried to start . Haven't had the time to test it, but I'm still considering using this chip.
MWP said:I wish to stick to opamps for the IV (OPA637's), but was wondering if i can use only one half of the output which will cut the number of opamps needed.
OPA637 is not intended for low gains. Use OPA627 instead if you have gain < 5.
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