• Resolved

ISO7741: Isolation Capacitor's value

Part Number: ISO7741


Please tell me about the isolated part of ISO7741.

·Please tell me the value of Isolation Capacitor.
·Please tell me the error of Isolation Capacitor's value.

best regards


  • Hi Cafain,

    The effective capacitance between side 1 and side 2 of the digital isolator is ~1pF. We have this parameter listed as CIO in datasheet.
    This effective capacitance can increase by a few more pF depending on the board design as the board will add its parasitic capacitance value to the device capacitance.

    Please note that this capacitance is the effective capacitance between the 2 sides of the device and the actual capacitance of the isolation barrier (isolation capacitor) within the device will be much smaller than pF.

    Hope this answer helps with the query.

    Anand Reghunathan