一种幅频稳定的正弦信号发生器  

A Sinusoidal Signal Generator with Stable Amplitude and Frequency

作　　者：胡夏融[1,2] 刘伦才[2,3] 黄文刚[2,3] 

机构地区：[1]电子科技大学,成都610054 [2]模拟集成电路国家级重点实验室,重庆400060 [3]中国电子科技集团公司第二十四研究所,重庆400060

出　　处：《微电子学》2009年第5期615-618,共4页Microelectronics

摘　　要：提出了一种简易的正弦信号发生器结构,电路前级为一个频率稳定的张弛振荡器,后级为一个三角-正弦信号转换器,利用一种新颖的两级温度系数互补原理,获得了不随温度变化的稳定的输出幅度。该信号发生器工作在±15V电源电压下,频率稳定性为98×10-6/℃,幅度稳定性0.05μA/℃。该振荡器已成功集成到线性可变差动变压器(LVDT)的信号调理芯片中。A simple structure of sinusoidal signal generator was proposed, which consisted of a relaxation oscillator with stable frequency in front stage and a triangular-to-sinusoidal-wave converter in back stage. Based on a novel method of two-stage temperature coefficient compensation, stable output amplitude independent of temperature was achieved. Operating at ± 15 V supply voltage, the signal generator has a frequency stability of 98 × 10^-6/℃ and an amplitude stability of 0. 05 μA/℃. The oscillator was successfully integrated into a signaling IC for linear variable differential transformer （LVDT）.

关 键 词：振荡器 正弦信号发生器 信号调理电路 

分 类 号：TN431.1[电子电信—微电子学与固体电子学]