OPA1632: Asking for the OPA1632 for the DAC balance line out design

SHH

Part Number: OPA1632
Other Parts Discussed in Thread: PCM1798, , NE5534

Hi team,
customer would like to use OPA1632 after PCM1798 to do the differential line out.
The line out need to output differential 1Vrms.
Could you please suggest how to implement this design?

BR,
SHH

over 6 years ago

0 kai klaas69 over 6 years ago

Guru 140200 points

Hi Shh,

you mean a circuit like figure 32 of datasheet of PCM1798 but with the OPA1632 instead of U3=NE5534? Would also some low pass filtering be needed?

Kai

0 SHH over 6 years ago in reply to kai klaas69

TI__Mastermind 30301 points

Hi Kai,
Yes. Is that doable? U3 is only single end output.
could R3 and R4 connect to OPA1632?
with or without low pass filter you will recommend? It is for high end line out application.

BR,
SHH

0 kai klaas69 over 6 years ago in reply to SHH

Guru 140200 points

Hi Shh,

yes, should work:

Kai

0 kai klaas69 over 6 years ago in reply to kai klaas69

Guru 140200 points

For comparison:

Kai

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OPA1632: Asking for the OPA1632 for the DAC balance line out design