pdf as OLE in drawing?

I am working on revising an electronic schematic drawing inwhich I have been given the changed schematic as a pdf image.

The existing SW drawing used the original pdf as an OLE directly,but this method seems to leave a lot to be desired on reolution...The pdf is wonderful, but when I put in into the SW drawing itloses alomost all legibility.

.jpg is a little better, but is there a better way?SolidworksDrawings And Detailing