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1. 发明申请

US20140070897A1 OSCILLATOR CIRCUIT 有权
标题翻译：振荡器电路
公开(公告)号：US20140070897A1
公开(公告)日：2014-03-13
申请号：US13774163
申请日：2013-02-22
申请人： NXP B.V.
发明人： Johannes Hubertus Antonius BREKELMANS , Reinier HOOGENDOORN , Nenad Pavlovic
IPC分类号： H03L5/00
CPC分类号： H03L5/00 , H03B5/06 , H03B5/12 , H03B5/1212 , H03B5/124 , H03B5/36 , H03L3/00
摘要： An oscillator circuit (702; 802) comprising first and second resonator terminals (710, 712; 810, 812) for connecting to respective terminals of a resonator (704; 804). The oscillator circuit also comprises a first inverting amplifier (706; 806) connected between the first and second resonator terminals (710, 712; 810, 812) in a first mode of operation; and a back to back pair of second inverting amplifiers (706, 708; 806, 808) connected between the first and second resonator terminals (710, 712; 810, 812) in a second mode of operation. There is also provided a controller configured to compare an operational parameter of the oscillator circuit (702; 802) to a switchover threshold, and switch the oscillator circuit (702; 802) from the first mode of operation to the second mode of operation when the operational parameter exceeds the switchover threshold.
摘要翻译：振荡器电路（702; 802）包括用于连接到谐振器（704,804）的相应端子的第一和第二谐振器端子（710,712; 810,812）。振荡器电路还包括在第一操作模式下连接在第一和第二谐振器端子（710,712; 810,812）之间的第一反相放大器（706; 806）以及在第二操作模式下连接在第一和第二谐振器端子（710,712; 810,812）之间的背靠背对的第二反相放大器（706,708,806,808）。还提供了一种控制器，其被配置为将振荡器电路（702; 802）的操作参数与切换阈值进行比较，并且当振荡器电路（702; 802）从第一操作模式切换到第二操作模式时操作参数超出切换阈值。

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