摘要 |
A CMOS substrate bias generator including a PMOS charge pump and a regulator for controlling the operation of the substrate bias generator. The substrate bias generator further includes an input circuit, a reference circuit to provide a reference voltage, a comparison circuit to compare voltage levels between the input and the reference circuit, and output circuitry to provide a signal from the comparison circuitry to the substrate bias generator. The comparison circuitry further includes hysteresis circuitry tending to preserve voltage at a node in the comparison circuit despite an imbalance between the input circuit and the reference circuit.
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