1) (2 pts) Explain the basic mechanism by which a basic current mirror operates.
2) (2 pts) Draw a basic BJT-based current mirror of both the NPN and the PNP variety.
3) (2pts) The emitter resistance of a BJT transistor is the ratio of the changes in what two parameters? Derive the equation which expresses the emitter resistance of a transistor in terms of its DC operating point values.
4) (3 pts) Derive the relationship between the fractional mismatch in collector resistance and the input offset voltage that results in the following BJT Differential Pair..