Other Parts Discussed in Thread: ADS1298R,
hi,
can i use ISOW7840DWER for Medical ECG devices to achieve the Type CF Applied at the AFE input side of ADS1298R.
WITH regards,
Ashok KR,
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Hi Ashok,
Thank you for your inputs.
I looked at the MINMAX MIW03M IEC 60601-1 certificate and I see it claims that select MINMAX devices conform to IEC 60601-1. Similarly, you can notice that ISOW7840 datasheet also mentions that the device conforms to the medical end equipment standard IEC 60601-1 Ed.3.
Regarding the leakage current, I wanted to make sure I understand the correct definition of the leakage current in reference to IEC 60601-1 and hence was seeking for more information in this regard. When I looked through the IEC 60601-1 Ed.3 standard, I understand that leakage current is defined as the current passing through Type CF inputs (patient side) to Protective Earth (PE) through the isolation barrier.
I am assuming that the leakage current you are referring to is in reference to the current passing through from Type CF input to ADS1298R, then to ISOW7840's isolation and then to PE. If my understanding is correct, then this leakage current passing through ISOW7840 from any pin on Side1 to any pin Side2 would be typically less than 1pA at room temperature. When temperature and other process variations are accounted, the worst case leakage current through ISOW7840 can be upto 1nA.
Let me know if this answers your questions, thank you.
Regards,
Koteshwar Roa