TJA1100 power ripples

[kevin-mingdong_]

I am reviewing the application notes requirement about 3V3 power supply. It said that the Vpp should not exeed 50mV between 1～66MHz.

My question is usually the oscilloscope bandwidth limits is fixed as 200MHz. Apply with 200MHz，our measurement is near to 58mV. Do you have any suggestion how to get the exact measurement and verify this requirement with 1～66MHz?

[guoweisun]

HI

You can select the oscilloscope bandwidth limits is not fixed,for example if your limited the bandwidth 100MHz with the test result is below 50mv,that meet specification.