Question:
I have an older design '98 circa, that uses the LM2803 part.
the INputs are driven by 3.3V TLL
The OUT is driving a relay with a +24VDC source
The +24VDC has an Analog Ground which is separate from the 3.3V Digital Ground.
NOTE: the Analog Ground is really DC ground , it is just kept separate for some Audio Circuit layout.
the Digital and Analog grounds are NOT connected..
See pic Below...
Just cant see how the Drive INPUTS are NOT Floating with regards to this design !!
