A spinal fixation device for stabilizing one or more segments of the human spine and for preventing the dislodgement of intervertebral spinal fusion implants, which remains permanently fixated once applied. The multiplied clock signal has a frequency that is a multiple of a frequency of the input clock signal. First and second NMOS transistors are included in the soft-start circuit, and receive the reference signal to turn off when the reference signal is in the first state.