239 ECG Front End

239 : ECG Front End

Design render

How it works

This project implements an ecg front end (front end for measure of electrocardiogram) using a folded cascode based architecture

How to test

To test the ecg front-end, connect the input signal from the elctrode (ecg singal) to the INp and INm analog pins (ua[5] and ua[4] respectively). Ensure ref (ua[1]) and Vref (ua[2]) are properly biased at 0.9V or at the output of a offset compensation circuit. Observe the output signal at the OUT pin (ua[3]) connecting OUTDRL (ua[0]) a the right leg of the body using another electrode.

External hardware

Oscilloscope

IO

#InputOutputBidirectional
0
1
2
3
4
5
6
7

Analog pins

uaPCB PinInternal indexDescription
0A55OUTDRL
1A00ref
2A44Vref
3A11OUT
4A33INm
5A22INp

Chip location

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