Op-amps¶
Op-amps in Zero take differential inputs and provide a
single output.
Voltage gain¶
The voltage gain of an op-amp is defined by its open
loop gain (a0), gain-bandwidth product (gbw), delay and poles or
zeros. The gain is as function of frequency.
Special case: voltage followers¶
When an op-amp is configured as a voltage follower (otherwise known as a buffer), where the output node is the same as the inverting input node, the voltage gain is modified.
Noise¶
Op-amps produce voltage noise across their input and output nodes, and current noise is present at their input nodes. See Op-amp noise for more details.