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When a circuit has a (non-zero) DC offset, it behaves as follows: You apply a certain input voltage and expect a certain output voltage. However, due to offset, the circuit does not output the expected voltage, it outputs a (slightly) different voltage. For example, let's say I have a voltage amplifier with 10x gain. It has an input voltage range of: -1 ...


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If I rigorously apply the definition of the offset voltage, I should find that voltage which, applied between the two inputs, sets the voltage of the output node to zero. For a lot of cheap op-amps, the offset voltage and the voltage amplification ratio are both high enough that the range of differential voltages that keep the output in the linear region is ...


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It's a feature on scopes. With offset it is possible to change the channel's reference level. You can do this by adjusting up or down relative to ground. You can use it for detecting small verying signals on a larger bias and it's also necessary when you want to subtract a certain DC voltage from the waveform. You have also "position". Position adjusts the ...


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Input offset voltage (Vio) - Voltage across the op amp's inputs that will force the output voltage to be 0V. Output offset voltage (Voo) - The output voltage of the op-amp when the input terminals are grounded. These are very different, and output offset voltage is not particularly useful except maybe in certain extremely niche applications. I am using ...


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Looks like a mistake. Ibias = (Ibp+Ibn)/2 Ios = Ibp - Ibn Where Ibp is the current flowing into the non-inverting input and Ibn is the current flowing into the inverting input.


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An ideal opamp-based comparator multiplies its input difference (Vdiff = Vi-pos – Vi-neg) by its open-loop gain (Ao). But there's always a non-zero offset voltage (Vos) which should be added to Vdiff. So the actual comparison equation turns into Vout = Ao (Vdiff + Vos). This equation tels us that; If Vdiff +Vos if greater than zero then Vout will hit the ...


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