I am trying to implement an opamp buffer with a single supply. The voltage being amplified is DC. (This is to isolate a digital output pin that can't supply enough current to the next stage) The opamp I have tried is LF356.
Now the input voltage is either 3.3 V (high) or 0 V (low). Will this work? I've tried this with an input of 0 V and it doesn't (the ouptut is at 10 V).
I understand that if an AC signal is being amplified, the ground can be lifted by adding VCC/2 and later removing the DC, but what happens if the input itself is DC?
I've been under the impression that if an opamp is fed with a single supply (VCC and GND), everything remains the same except that now the opamp rails have now changed. Is this correct? My understanding of single supply opamps is shaky and I'd appreciate inputs. Thanks.
Now the input voltage is either 3.3 V (high) or 0 V (low). Will this work? I've tried this with an input of 0 V and it doesn't (the ouptut is at 10 V).
I understand that if an AC signal is being amplified, the ground can be lifted by adding VCC/2 and later removing the DC, but what happens if the input itself is DC?
I've been under the impression that if an opamp is fed with a single supply (VCC and GND), everything remains the same except that now the opamp rails have now changed. Is this correct? My understanding of single supply opamps is shaky and I'd appreciate inputs. Thanks.
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