RC oscillator circuit based on laser trimming

The invention belongs to the technical field of RC oscillators, and particularly provides an RC oscillator circuit based on laser trimming, which comprises a bias voltage generation circuit used for generating standard voltage VREF, an RC charging and discharging circuit, a comparator circuit and a clock jitter circuit used for reducing clock jitter, the input end of the clock jitter circuit is connected with a power supply, the output end of the clock jitter circuit and one end of the RC charging and discharging circuit are connected to the first input end of the comparator together after being connected, and the other end of the RC charging and discharging circuit is grounded; the second input end of the comparator is connected with a standard voltage VREF, and the output end of the comparator outputs an oscillation signal. The circuit adopts a structure of charging and discharging the capacitor by current and adding one comparator, and compared with a traditional structure of charging and discharging the c