twincitian
New Member
Hi.
First time posting. Wish I had found this site months ago, would have come in handy.
As shown in the picture(taken from openECGproject : 3-Lead Wireless ECG document):
![ECG Gain Resistor Split.jpg ECG Gain Resistor Split.jpg](https://www.electro-tech-online.com/data/attachments/32/32599-2952250a619b107d4d95c3aa9a2e6788.jpg)
The gain resistor for the IN-Amp is actually made up of 3 resistors. The center tap of the two 22K resistors going to the DRL(Driven Right Leg) connection.
According to the document:
"This method was utilized because two separate amplifiers
needed to be interfaced to the right leg common-mode driver". This comment I don't understand.
Anyone know why this was done instead of using just two resistors, each having half the value of Rg and using the center tap for the DRL?
Thanks Much.
First time posting. Wish I had found this site months ago, would have come in handy.
As shown in the picture(taken from openECGproject : 3-Lead Wireless ECG document):
![ECG Gain Resistor Split.jpg ECG Gain Resistor Split.jpg](https://www.electro-tech-online.com/data/attachments/32/32599-2952250a619b107d4d95c3aa9a2e6788.jpg)
The gain resistor for the IN-Amp is actually made up of 3 resistors. The center tap of the two 22K resistors going to the DRL(Driven Right Leg) connection.
According to the document:
"This method was utilized because two separate amplifiers
needed to be interfaced to the right leg common-mode driver". This comment I don't understand.
Anyone know why this was done instead of using just two resistors, each having half the value of Rg and using the center tap for the DRL?
Thanks Much.