NX5L2750CGU 切换的时候 5脚3.3v时 3脚会有波形

[JIAXUAN]

NX5L2750CGU 切换的时候 5脚3.3v时 个别3脚会有波形，正常3脚不会有这种情况。图片黄线5脚3.3v,绿线是3脚，绿线一格50mv,峰值100mv多.

[TomasVaverka]

Hi Jiaxuan,

I am afraid I do not quite understand what you are asking about. Could you please translate it into English and describe the issue you are facing with the NX5L2750CGU in detail?

Best regards,

Tomas

[JIAXUAN]

HI Tomas,

When the NX5L2750CGU experiences abnormal 5-pin 3.3V during switching, some 3-pin signals have waveform, which is not the case with normal 3-pin signals. Picture representation: 5-pin 3.3v represents yellow line, 3-pin represents green line, green line is 50mv per grid, and peak value is more than 100mv

Best regards,

JIAXUAN

[TomasVaverka]

Hi Jiaxuan,

1. What is the frequency of pin3 waveform? Please check GND and VCC, any coupling from GND/VCC plain.

2. Pin3_2Z should connect to pin5_2Y0 or pin2_2Y1. From the scope picture, pin5_2Y0 is 3.3V, pin3_2Z is near 0V, so pin3 is not connected to pin5 at this time, it is connected to pin2, right? What is the signal at pin2?

PS: The quality of scope picture is not very good, it is hard to read -> could you please provide a better snapshot?

Best regards,

Tomas