Symmetrical clock crystal oscillator circuit
    1.
    发明授权
    Symmetrical clock crystal oscillator circuit 失效
    对称时钟晶振电路

    公开(公告)号:US5455542A

    公开(公告)日:1995-10-03

    申请号:US155500

    申请日:1993-11-22

    CPC分类号: H03K3/0307

    摘要: An oscillator circuit provides a symmetrical signal without halving the frequency of a crystal oscillator 12. The input 14 of the crystal oscillator 12 is low pass filtered, and the output 18 of the filter 16 is differential voltage compared with the input 14 of the crystal oscillator 12. The output 22 of the differential voltage comparator 20 is symmetrical and of the same frequency as the crystal oscillator 12. The crystal oscillator 12 is preferably a Pierce oscillator.

    摘要翻译: 振荡器电路提供对称信号而不使晶体振荡器12的频率减半。晶体振荡器12的输入端14被低通滤波,滤波器16的输出端18与晶体振荡器的输入端14相比是差分电压 差分电压比较器20的输出22是对称的,并且具有与晶体振荡器12相同的频率。晶体振荡器12优选地是皮尔斯振荡器。