The Bandgap Reference
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 heavy load capacitance at the output, the circuit can become unstable, es - pecially in cases where A 1 itself contains more than one stage, and 4) if the op amp begins with a high output level
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