Hi ADI team!
I have a few questions about the EEG example in the AD8237 datasheet.
- See red box below. Is the 47nF capacitor creating a LPF? Is the fc=33.8Hz? ... I'd like to use the AD8237 with a gain of 201 and a LPF with a fc of ~500Hz. Would you recommend using a 200kOhm resistor with a 0.015uF cap?
- See blue box below. Is the 3.3uF cap and 2MOhm resistor forming an integrator and acting as a HPF with a fc=0.02Hz? If so, I'd like to do the same but have a fc=20Hz. What cap/resistor values would you recommend in that case?
- See green arrow below. What cap value would you recommend for this filtered voltage divider?