| 摘要 |
A CMOS charged pump circuit for biasing the N well of a memory array. The present invention utilizes a multivibrator oscillator coupled to a constant current source to provide a frequency output which is independent of the supply voltage. The multivibrator oscillator uses less power than prior art ring oscillators. Feedback through a comparator circuit is used to monitor the N well voltage so that the multivibrator oscillator and ultimately the charge pump may be duty cycled to further reduce power consumption. |
