Other Parts Discussed in Thread: TLV4333
Tool/software:
Hi, so I'm designing an amplifier/buffer to measure bio-signal (EEG) and need 1. high input impedance (>100M) 2. ultra low noise (<<10uVpp @ 0.1-10Hz) 3. low cost 4. low power (~1mA). However, I've found the part, OPA4314, to be in specs in the most parts. But I cannot find its input impedance. May someone please provide me? Thank you in advance. Also, if the is any more suitable amplifier/buffer, please advice. The last question is, in the future, if i want to know any Op-Amp input impedance, how can I approximate them first? Maybe does it has something to do with input bias current? Or do I always have to ask for support?
