中文摘要：

为满足谐振式微传感器对信号源同步性的要求，本文提出了一种对数字频率信号进行同步输出的方案，使用AD9852提供准确的数字频率输出信号作为FPGA的输入，由FPGA实现对信号的二次分频及同步输出。最后给出了Modelsim仿真结果并通过电路实现结果验证了方案的可行性。结果表明在1～10MHz的输入频率下，同步输出信号的频率偏差小于0．01μs。

英文摘要：

To meet the demands for synchronizing signal sources of micromachined resonant sensors, this paper presents a method of digital synchronization output signal, using AD9852 to provide accurate digital frequency output signal as the input to FPGA, and making FPGA imple- ment the division by two circuits and the synchronization of signal output. Modelsim simulation and circuit realization results are given to verify the feasibility of this method. Results show that within the input frequency range of 1 - 10 MHz, the frequency deviation between the two-way synchronization output signals is less than 0. 1 μs.