SPICE-Simulation using LTspice IV

10.3. Use of Labels
In general OP Amp circuits need a positive and a negative supply voltage. The fully drawn circuit then gets a little
bit untidy, so applying some Labels simplifies the appearance.
When using a label you replace the wiring by a simple connection with a name for the node at all points where it is
needed and you no longer need to draw all the necessary wires.
Let us use the OPA355 from the last chapter and build a new gain block (gain = 10 (+20dB) ; non- inverting
circuit; 2 supplies of +2.5V and -2.5V).
Also use a label for the input and for the output nodes.
This has another advantage:
In the waveform viewer you now get the label as information for the trace
instead of the node number....
So the schematic looks like this, preset for a sweep from 1Hz to 200MHz:
And now let us do the work, starting with the 2 power supplies.
Step 1:
Delete all wiring between the power supply and the circuit and press the “label button”:
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