Good afternoon.
I'm an electronics student in Portugal and i am doing an ECG project.
I'm choosing the componnents to my project and i am having some difficulties.

I need to keep my pcb as small as i can. The instrumentation amplifier that my teacher suggested me was the AD623.
After the amplification i must filter the signal with a high pass filter (fc=0.5Hz more or less), and a low pass filter (fc=100Hz more or less).
I think that the instrumentation amplifier can give sufficient gain to the signal.

Now i have to choose one Microcontroller in order to convert the signal from analog to digital and send the converted signal using NFC (near field communication).
In order to filter the power line noise (50HZ) i must use a digital filter.

I already used PIC18F258 in a project, but in this case i need to use a smaller one and i would appreciate some help choosing one.

For the supply of the amplifier and the microcontroller i must use a 3V battery (like the watch batteries).

Wich microcontroller should i use?

Thanks for the help

Castanheira

 

Can i see your schematic design? What type of electrode u using to collect heart pulse? Actually im doing this for my course project with the title of Bluetooth heart rate monitor.