Alternative IPS

Hi,

I was looking for IPS, which would nicely suite push-pull VAS, and came up with an idea to rotate half of differential input (IPS-A). First simulations seems interesting but I couldn't find any info. There is no point in reinventing the wheel, so any indication/name of such IPS/comments would be very helpful. Thanks.

Stanislaw


Schematics and FFTs attached (initial idea validation):
  • 2nd harmonic is higher but it doesn't require additional circuitry to move signal to opposite rail (IPS-A vs. IPS-C),
  • part of it is probably generated by Beta differences (not optimal transistors),
 

Attachments

  • Schematics_test.png
    Schematics_test.png
    14.9 KB · Views: 129
  • IPS-C.png
    IPS-C.png
    20.8 KB · Views: 130
  • IPS-B.png
    IPS-B.png
    20.7 KB · Views: 98
  • IPS-A.png
    IPS-A.png
    20.5 KB · Views: 132
  • IPS_test.asc
    IPS_test.asc
    3.9 KB · Views: 49