Cadence’s acquisition of Sigrity, announced yesterday, is a big deal for reasons beyond the technology being acquired.

Sure, it’s great for Cadence to gets its hands on Sigrity’s power and signal integrity tools.

But what this move also underscores is something of a recommitment by Cadence to its printed circuit board software. You’d have to go back years to find the last time Cadence completed a significant deal in the PCB space (I’m not including, of course, the failed 2008 “attempt” to purchase Mentor, which eventually cost then CEO Michael Fister his job.)

Cadence’s PCB revenue jumped in 2011, growing by our estimates roughly 23% year-over-year. That makes it by far the fastest-growing player in the PCB EDA space. How long has it been since they could say that?

Coupled with its aggressive support of the IPC-2581 data transfer format, Cadence is showing a newfound vigor toward protecting and even extending its circuit board design position. Mentor remains a much larger competitor in PCB sales, but there are signs of a shift taking place.