3
\$\begingroup\$

I would like to put an isolation transformer at the differential output of MAX4063 chip.

This transformer has a center tap. Then at secondary side, outputs will be connected to a 3-pin XLR cable.

Is this a correct wiring?

I couldn't find anything similar with Google.

enter image description here

Thanks!

\$\endgroup\$

1 Answer 1

Reset to default
4
\$\begingroup\$

Looks good. I've used versions of that xfmr, and as noted on the datasheet the low end performance is not great.

R3, R4, and the pin 2 connection to GND are not needed for audio reasons, but they don't hurt anything.

Depending on what the downstream circuit topology is, you probably do not need the pin 5 connection to GND. In some cases it can reduce noise, while in others it can increase noise. In the Shure and EV mics I'm familiar with, there is no centertap on the internal impedance-matching transformer.

\$\endgroup\$
1
  • \$\begingroup\$ thanks! other end of the XLR cable will be connected to LINE IN of behringer ADA8200 \$\endgroup\$
    – Ariel Narboada
    Commented Aug 14, 2023 at 22:30

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.