I have a question in regard to the AD536A. I wanted to know what's the cut-off frequency for this product in which it converts AC to DC and if it's tunable or not?
I also wanted to ask what type of input format we have for this product?
Are you sure that's the correct part number? I don't see the AD536A on Analog.com.
yeah That's the right part number. It's called Integrated Circuit True RMS to DC converter.
This part is an antique and I would definitely not recommend using it in a new design. The data sheet copyright goes back to 1976...
Regarding the bandwidth response it is shown in Figure 8 of the data sheet. The upper cut-off is very much dependent on signal level. The lower cut-off is determined by an external capacitor that averages out the results of the RMS core.
The input format is simply a voltage 0 - 7V max RMS. The source needs to be able to drive the approximately 16.7kOhm input impedance which shouldn't be that hard.
For a newer part, look at the AD8436.
Can you please tell me if this new IC (AD8436) satisfy the requirements I described above or not?
The input amplitude is less, frequency is higher. No dB output. For other differences,
refer to the d.s.
Thanks, do you know if I can make the cut-off frequency down to 0.1 Hz or not?
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