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1. 发明授权

US4254382A Crystal oscillator temperature compensating circuit 失效
标题翻译：晶振温度补偿电路
公开(公告)号：US4254382A
公开(公告)日：1981-03-03
申请号：US21524
申请日：1979-03-19
申请人： Anthony F. Keller , Albert V. Kraybill
发明人： Anthony F. Keller , Albert V. Kraybill
IPC分类号： H03B5/32 , H03L1/02 , H03B5/36 , H03B5/04
CPC分类号： H03L1/023
摘要： An integratable circuit is utilized for generating a temperature varying control voltage to be applied to a varactor diode to temperature compensate a crystal oscillator. The temperature compensating circuit has a middle range circuit for creating a substantially linear current versus temperature variation in a middle temperature range, a cold-temperature range circuit operative below a predetermined temperature for creating a non-linear current versus temperature variation a hot-temperature range circuit operative above a predetermined temperature for creating a non-linear current versus temperature variation and circuitry for summing said currents and generating a voltage proportional to the current sum. The control circuit, which requires a regulated supply voltage, uses a diode string and differential amplifiers to generate the desired current versus temperature variation.
摘要翻译：可集成电路用于产生施加到变容二极管的温度变化控制电压以对晶体振荡器进行温度补偿。温度补偿电路具有中间范围电路，用于在中间温度范围内产生基本上线性的电流对温度变化，在低于预定温度工作的冷温度范围电路，用于产生非线性电流对温度变化的热温度范围电路工作在预定温度以上以产生非线性电流对温度变化，以及用于对所述电流求和并产生与电流和成比例的电压的电路。需要调节电源电压的控制电路使用二极管串和差分放大器来产生所需的电流对温度变化。

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