A fast and low power consumption crystal oscillator driving circuit design.

Abstract

Aiming at the disadvantage of high-power consumption and a long start-up time of the traditional Pearce driver circuit, a 32.768KHz crystal driver circuit is designed, which can effectively reduce power consumption and ensure a fast start. The simulation results show that, under the voltage of 1.1 V, the circuit vibration time is 0.5 ms, the output amplitude is about 250 mV, the static current is 48.6 nA, and the power consumption is 53.5nW. This drive circuit has the characteristics of a fast start, stable output, and low power consumption. It can be used as a clock input module in a digital-analog hybrid circuit.