Does this circuit scale all intermediate voltages in a linear way, or does it only work as a digital level shifter?Here's the LTspice simulation of a one-transistor circuit to do the level shifting.
How close to 0V does the output need to go?
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No.For example, if the input side were 0V, would you get -2.5V output?
Egg on my face.The TS did state that he needs to shift an analog signal.