公开(公告)号：EP0998022A1

公开(公告)日：2000-05-03

申请号：EP98931010.7

申请日：1998-07-08

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

发明人： SHIBUYA, Shuji ,  TAKEUCHI, Hisato ,  MATSUURA, Junichi, Room 205, Mukougaokaryo ,  TATEYAMA, Yuichi, Room 304, Mukougaokaryo ,  SAEKI, Takaharu

IPC分类号： H03B5/32 ,  G06G7/12

CPC分类号： G06G7/26 ,  H03B5/362 ,  H03B5/368 ,  H03B2201/0208 ,  H03L1/022 ,  H03L1/025 ,  H03L1/026 ,  H03L1/028

摘要： A temperature compensating crystal oscillation device includes a constant voltage circuit (12) for outputting a predetermined voltage independent of the ambient temperature, a temperature sensor circuit (13) for outputting a voltage in proportion to the ambient temperature, and a control circuit (14) for receiving the constant voltage output from the constant voltage circuit (12) and the voltage output in proportion to the temperature from the temperature sensor circuit (13) and for generating a control voltage (Vc) used for compensating a temperature characteristic of a quartz oscillator in the entire range of the ambient temperature through polygonal lines approximation of a negative cubic curve by using continuous lines. Furthermore, the crystal oscillation device includes a VCXO (15) whose oscillation frequency is controlled to be a predetermined value by the control voltage (Vc), and a ROM/RAM circuit (16) for storing temperature compensating parameters used for compensation of a temperature characteristic of the control voltage (Vc) for optimizing the oscillation frequency of the VCXO (15).

摘要翻译： 一种温度补偿功能的晶体振荡装置包括用于输出铃声预定电压不依赖于环境温度，温度传感器电路（13），用于输出铃声正比于环境温度下的电压，和控制电路的恒压电路（12）（14） 用于接收来自所述恒压电路输出的恒定电压（12）和电压输出成比例地从温度传感器电路（13）中的温度，并产生用于补偿石英振荡器的温度特性的控制电压（Vc） 在通过使用连续的线通过负三次曲线的折线近似环境温度的整个范围内。 进一步，所述的晶体振荡装置包括用于存储温度补偿参数用于温度补偿的VCXO（15），其振荡频率被控制成由所述控制电压（Vc）的预定值，和ROM / RAM电路（16） 用于优化VCXO（15）的振荡频率的控制电压（Vc）的特性。