| 摘要 |
Substrate bias control circuitry (100) is provided which includes a bias sensor (101) for measuring a bias voltage of a substrate and generating a control signal and response. A master oscillator (102) is provided for generating a first driving signal, a frequency of the first driving signal adjusted by the control signal generated by the bias sensor (101). A first charge pump (103) is provided for pumping electrons into a substrate in response to the first driving signal. A slave oscillator generates a second driving signal, a frequency of the second driving signal is determined from the frequency of the first driving signal using a phase-locked loop. A second charge pump (105) is provided for pumping electrons into the substrate in response to the second driving signal. |
