41设计考虑… 33 4.2自动幅度控制电路设计 35 4.2.1晶振核心电路设计…35 42.2电流源… 37 4.2.3峰值检测和比较器电路… 39 4.2.4自动幅度控制… 40 4.3自动频率控制… 43 4.3.1数控开关电容阵列… 44 4.3.2电容阵列的单元设计… 46 4.3.3一阶delta-sigma调制器 50 4.4晶振输出缓冲级设计… 51 参考文献…… 53 第五章芯片实现及测试… 55 5.1芯片实现… 55 5.2芯片测试结果… 56 参考文献… 61 第六章总结与展望 63 6.1总结 … 63 6.2展望… 63 参考文献 63 致谢… 65II 4.1 设计考虑 ······················································································33 4.2 自动幅度控制电路设计·································································35 4.2.1 晶振核心电路设计 ·····························································35 4.2.2 电流源···············································································37 4.2.3 峰值检测和比较器电路······················································39 4.2.4 自动幅度控制 ····································································40 4.3 自动频率控制···············································································43 4.3.1 数控开关电容阵列 ·····························································44 4.3.2 电容阵列的单元设计··························································46 4.3.3 一阶 delta-sigma 调制器····················································50 4.4 晶振输出缓冲级设计 ····································································51 参考文献 ·····························································································53 第五章 芯片实现及测试··········································································55 5.1 芯片实现 ······················································································55 5.2 芯片测试结果···············································································56 参考文献 ·····························································································61 第六章 总结与展望 ·················································································63 6.1 总结 ·····························································································63 6.2 展望 ·····························································································63 参考文献 ·····························································································63 致谢 ··········································································································65