The Bandgap Reference
While simple and robust, the band-gap reference in Figure 6(a) suffers from several undesirable effects: 1) the output tends to contain sub-stantial flicker (and thermal) noise con - tribution from the op amp and M 1 and M 2, 2) the circuit potentially exhibits poor supply rejection, especially due to that of the op amp, 3) if driving a
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