AnsweredAssumed Answered

[Ask] AD8232 Input Impedance for IEC60601-2-47

Question asked by on Jan 4, 2016
Latest reply on Jan 29, 2016 by krisf


My customer got problem when testing input impedance of AD8232.


Test condition:

Follow IEC60601-2-47 , see in attach file


The ECG test module generate 10Hz/5mV signal to device input.

And output can't be lower 94% (4.7mV).

Currently we got 4.1mV.  (AD8232 output = 820mV , GAIN=200) 


Do you have any suggestion in this issue?

We try to short Switch S1 and the we got around 4.9mV.

But in normal test, the S1 should OPEN.