I am trying to understand why ti did certain things in there evm
design linked
here
http://focus.ti.com/general/docs/lit...0&fileType=pdf
1)
Like i don't understand why the common mode resistors are 4.7kohm, I
use R9=R10=R11=R12 = 1/(√2 • 2πfCC1) this formula
i got off this page Understanding
output filters for Class-D amplifiers | Audio DesignLine
in
which case it is much lower for this design more like 3-6ohms,
depending on fc. Can someone explain the rational 4.7kohms? Thanks