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AD8232 Slow Recovery

Question asked by henry-tang on Jul 30, 2015
Latest reply on Aug 5, 2015 by henry-tang

Hi,

 

I'm using AD8232 to design portable ECG product and its circuit is just same as figure.66 in datasheet.

 

But when we're trying to test according to ISO60601-2-47, one item which is called frequency response.

 

In this test item, we will input a 3 mV Rectangular pulse for 100 ms to see its frequency response.

 

Bu it results in -0.98mV displaced voltage and takes about 2 second to recovery.

 

It seems displace too much value to baseline and recovery slope is too slow for this certification standard.

 

Do you have related experience you may meet before? What can I do to avoid this displacement up to 1mV?

 

Any opinion or suggestion is highly appreciated, thanks!

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