There is a question about UA9638 output waveform.
We found when output of UA9638 is no connection with downstream circuit, the output waveform is abnormal as A diagram. but when it's connected to downstream circuit, the waveform is ok as B diagram.
1. Why the output waveform is abnormal without downstream circuit connection?
2. Do you suggest a termination resistor between differential output when the communication distance is only 30 - 50mm?
3. We tried to use 100 Ohm (package: 1206)termination resistance, but it looks the thermal is higher.