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介绍了在系统可编程模拟器件 isp PAC2 0的主要结构和性能特点 ,以及用一块isp PAC2 0实现的电压控制振荡器 ,并以该压控振荡器为基础构成了脉冲调制电路。
The main structure and performance characteristics of isp PAC20 are introduced in the system programmable analog device. The voltage controlled oscillator is implemented by a isp PAC20. The pulse modulation circuit is based on the voltage controlled oscillator.