Hi team,
Customer implements RC filter at ISO6760 input. The value is R = 600ohm, C = 330pF.
Do you have recommended range for each value? Are there any effect by increasing resistor value?
Best regards,
Hayashi
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Hi team,
Customer implements RC filter at ISO6760 input. The value is R = 600ohm, C = 330pF.
Do you have recommended range for each value? Are there any effect by increasing resistor value?
Best regards,
Hayashi
Hello Hayashi-san,
Thank you for your question.
Are there any effect by increasing resistor value?
The equation for calculating cut-off frequency is f= 1/(2*pi*R*C). R and C are 600ohm and 330pF respectively.
Using these values, the cut-off frequency of the filter is roughly 804kHz. Raising R would lower the cut-off frequency further.
The max data rate of ISO6760 is 50MHz. The filter currently has a cut off frequency that is less than the data rate of the device. This is okay as long as the customer is using a data rate that is <804kHz. However, if the customer is using a data rate that is near or above the cutoff frequency, the data will be filtered out.
Do you have recommended range for each value?
The specific values of the filter depend on what the customer is trying to accomplish with the RC filter. The recommended range for R and C depends on system requirements such as what data rate is used and what frequencies the customer is trying to attenuate.
I hope this helps. Please follow up if you have further questions.
Best Regards,
Andrew