Looking for a 3 lead ECG circuit

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can someone help me? i need an ecg circuit that have 4 input (4 limb electrodes) and 3 output (I,II,III)..

if no then any circuit related to 3 lead ecg can do.. please.. n thank u:|

general design, schematic design, whatever.. as long as it related to ecg circuit..
 

3 lead ecg

Google: driven ecg amplifier circuit

One result is: https://www.analog.com/static/imported-files/data_sheets/AD620.pdf Page 15

Though it only shows RA, LA, and RL limb leads (not LL), LEADs I, II, and III are achieved by just selecting which pair of electrodes go to the amplifier's differential inputs.

Common = RL
Lead I = RA-LA
Lead II = RA-LL
Lead III = LA-LL

Ken
 

three lead ecg

Here is a direct link of ASIC for ECG signal acquisition named CARDIC made by Aurelia Microelettronica Italy.
You can ask directly a request for quote and any information.

**broken link removed**
 

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