摘要
介绍了目前数字系统中广泛使用的 PDM调制技术。仿真结果证明相对于经过 PWM调制后的 D/ A转换结果 ,模拟信号中的纹波得到了明显地削弱。因此 ,PDM技术更适用于要求失真小的数字系统的 D/ A转换中。
This paper introduces the PDM modulation technology which is widely used in digital system nowadays. Result of the simulation proves that the ripple in analog signal has been attenuated, and relative to D/A conversion after PWM modulation.Hence, the PDM technology is more suitable for D/A conversion in low distortion digital system.
出处
《现代电子技术》
2005年第1期13-14,20,共3页
Modern Electronics Technique
