INA321 322 a low-cost medium accuracy ECG machine ECG amplifier


Posted on Mar 28, 2007

As shown by INA321/322 constitute a low-cost, medium accuracy ECG machine ECG amplifier circuit shown. INA321 input signal from the patients arm around/322, the INA321/322 ampl


INA321 322 a low-cost medium accuracy ECG machine ECG amplifier
Click here to download the full size of the above Circuit.

ified output to the operational amplifier OPA336, OPA336 produce an output voltage from the inverting amplifier VOUTPUT 100 times. Common-mode voltage is done by 2M resistance. VR inverting amplifier OPA336 to provide a bias voltage, the output voltage as a bias voltage for the operating point changes. Similarly, by another OPA336 form a feedback added to the REF terminal INA321/322 as a bias voltage, INA321/322 6 pin output voltage as a bias voltage is small for a change. The OPA336 as a voltage follower, for the right leg drive. For filter requires different applications, you can change the output of the capacitance value to meet.




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