ISO122 Output Phase vs Input Frequency

Dear Toshio Ushikubo,

Unfortunately we do not have characterization data for the output phase versus input frequency for the ISO122.

Does your customer have any specific concerns that I could address without that information?

Best regards,

Jose

Hello Jose-san, 

Thank you for your response.

Customer is evaluating data acquisition system using ISO122 and TI OPAMP ADC, and it converts 50/60Hz sine wave voltage and current signal to digital.

They have to calculate total delay form sensor to ADC output.

Could you please advise signal delay time of ISO122 from input to output when the input is 50/60Hz sin wave. (Power supply is +/-15V)

If you don’t have characterization data, could you say any information from internal operation principle?

Best Regards.

Hello Toshio-san,

We do not have information on the time delay from input to output of the ISO122.

The principle of operation of the ISO122 is described on page 6 of its datasheet.

Best regards,

Jose

Hello Jose-san,

Thank you for your answer.

I read the principle of operation, but I could not find the information it can lead the delay.

Could you lead the delay from operation theory ?

Best Regards.

Hello Jose-san,

Could you answer above my question dated Mar 28 2014 03:47 AM ?

Best Regards.

Hello Toshio-san,

Unfortunately we do not have characterization data for the delay. The best alternative for your customer would be to try to measure it from several units. From our side, the delay is not a specification we can assure to be below a given threshold but the customer will need to run experiments to get an idea of how much it is.

Best,

Jose

 Hello Jose-san,

Thank you for your reply.

I will ask customer to measure delay on their board.

Best Regards.