Please teach me AD8436.
I would like to make a simple RMS / DC.
I've created a circuit design similar to that Fig3 of AN1341.
CIN has not been placed.
IGND is connected to GND
I has tested the following.
1.RMS Input=0V(RMS) =>Output= 0.2mV
2.RMS Input=0.5mV(RMS) =>Output=0.2mV(Not change out put voltage)
3.RMS Input=30V(RMS) =>Output will vary greatly
4.RMS Input=0V(RMS) =>Output= 0.4mV
5.RMS Input=0.5mV(RMS)=>Output= 0.5-0.6mV(change out put voltage 0.1-0.2V)
It differ output voltage of 2. and 4.
If I change the input voltage from 0V (RMS) to 0.5V (RMS), 2 is no change, but 5 is change.
This change is undesirable, please teach me the measures.