question about ecg - Electronic Circuits Projects Diagrams Free

muhammadfekry_2010 · 15th February 2008, 10:02 PM

hello

i search of course
about circuits, i found circuits use ad620 & ad624
so if u know which is better ?

iam asking so that i can find one who do ecg circuit before & it was working properly
thanks

KMoffett · 15th February 2008, 10:21 PM

muhammadfekry_2010,

The general specs on both are similar.

The AD620 is smaller (8-pin) and cheaper $5-$10US at Digikey
The AD624 is larger (16-pin) more expensive $30-$50US at Digikey
The AD624 has pin-selectable precision gain, but since absolute amplitude accuracy is not very important in ECG, I don't think this much needed.

I have not used either one, so that is just my take from the datasheets.

Ken

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15th February 2008, 10:02 PM	(permalink)
muhammadfekry_2010	question about ecg hello i search of course about circuits, i found circuits use ad620 & ad624 so if u know which is better ? iam asking so that i can find one who do ecg circuit before & it was working properly thanks

15th February 2008, 10:21 PM	(permalink)
KMoffett	muhammadfekry_2010, The general specs on both are similar. The AD620 is smaller (8-pin) and cheaper $5-$10US at Digikey The AD624 is larger (16-pin) more expensive $30-$50US at Digikey The AD624 has pin-selectable precision gain, but since absolute amplitude accuracy is not very important in ECG, I don't think this much needed. I have not used either one, so that is just my take from the datasheets. Ken __________________ "To invent, you need a good imagination and a pile of junk." Thomas A. Edison (1847 - 1931) Last edited by KMoffett; 15th February 2008 at 10:38 PM.