Hi Gerd
Thank you for your suggestion. As you pointed out there are other factors beside pumping current to get lower 1/f. Geometry being one of the factors, it can be prohibitive for some devices depending on target applications, markets and of course…
Hi Gerhard,
Thanks for the explanation, now i more understand about the idea of paralleling op amps.
Do you have some link or file to learn about it more deeply?
For your information i will using that idea to design nanovoltmeter with wider bandwidth…
Other Parts Discussed in Thread: LME49721 , OPA322 , OPA365 , LMP7731 I am using this device in a 2nd order unity gain Sallen-Key low pass filter. R1=R2 = 100k, C1 = .22uF, C2 = .47uF. Vcc = 2.5 volts.
I am seeing about a .250 volt drop across R2 at about…