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Hello guys.
I have a very simple question of general OPAMP (I'm using LM7321)
Can I use LM7321 while only supply negative power for simple unity gain negative voltage follower ( not negative gain , It is negative input voltage follower for bias buffer )
My circuit setting is
supply V+ : Signal Ground
supply V- : -3V
In+ : Negative Input ( guarantee -2 < Input < -0.5 )
In - : Connected with Out Pin ( for unity gain voltage follower )
I think I have no problems with my configuration. I have some non-opamp no feed back buffers with similar circuit topology (Grounded Positive Supply, Negative Supply Only)
Also, My spice simulation result looks fine with unity gain
Are there any problems I did't noticed?
Thanks for all
Thank you so much.
In fact, that opamp is used as bidirectional bias voltage source/sink supply (about +/- 50mA)
If you have better solution for bias supply(must sink and source both) please let me know.
Have a good day.