Dear Sir
The TI TAS5717PHPR, IC OS-RES and resistance R32 mentioned above, now we have made 13 sets before the batch of 1000 sets, and R32 uses 16K. After our test, 8 pieces of audio were normal, but 5 pieces of audio were interrupted, or no sound. When we change the resistance value to 18K, the fault is still the same, but when we change the resistance value downward to 13K,12K and 11K, the sound will be normal and there will be no interruption or no sound. The patches are all the same. They are all pasted by the same patch machine. The IC pin ground pad is also normal. I wonder whether this is the R32 value range of IC, or there is something wrong with our PCB design.
This is the PCB
Layout: 2 layer
Sch:
Is there any influence between the resistance of this R32 and our PCB design? Why is there sound interruption and silence when 18K or 16K is used? IC is not broken, as long as the resistance is reduced, the sound will be normal. IC grounding and other grounding is no problem, the patch process is normal, so how can the manufacturer put the resistance position will be better, more reasonable.
