Here is an interesting online source that might help calibrate things the old fashion way. Can you touch the PCM3168A continuously without pain, or only for short periods?
Good information. So for free air-unheatsinked, using the spec'd Junction-to-case thermal resistance of 7.7 C/W and the typical spec'd power dissipation of 1.16 W puts the junction temperature at about 74 C - well below the spec'd maximum Tj of...
The CS42448 does run very hot. The CS42448 DOES NOT have a thermal power pad on its bottom side, however.
Since the PCM3168 has a thermal power pad, I was hoping it would run much cooler if properly connected to a good ground plane on the PCB...
I am in the process of retrofitting an existing PCB that currently uses the CS42448. It looked pretty straightforward to me, so the fact you got it working is good confirmation.
FYI - One interesting observation is that the nominal supply...