I use AD8436 to measure RMS.
I have to measure RMS of two type of voltages.
The first type is a rectangular wave with frequency 10 HZ , pulse duration 300 us , no DC bias , peak amplitude from 0 V to 5 V.
The second type is also rectangular wave but with frequency 1 HZ , pulse duration 5 ms , no DC bias , peak amplitude from 0V to 2.5 V.
When i measure RMS of the first type there is no problem , but when i measure the second type , there is a big error .
I have to put very big value of CAVG in order to reduce the error.
In the datasheet of AD637 , there is a circuit that is named "AD637 as a Low Frequency RMS Converter".
Can you suggest similar circuit for AD8436.
With Best regards