-
1.发明授权Transconductance control circuit, particularly for continous-time circuits 失效Transkonduktanzsteuerschaltung特别是用于连续时间电路
公开(公告)号：EP0957578B1
公开(公告)日：2004-07-28
申请号：EP98830296.4
申请日：1998-05-15
Applicant: STMicroelectronics S.r.l.
CPC classification number: H03F3/3001 , H03H11/0472
-
2.发明公开An integrated circuit with two phase-locked loops and with means for preventing locking owing to injection 失效一种集成电路，其包括两个锁相环的装置，以及用于防止注入同步
公开(公告)号：EP0892499A1
公开(公告)日：1999-01-20
申请号：EP97830351.9
申请日：1997-07-14
Applicant: STMicroelectronics S.r.l.
Inventor： Celant, Luca , De Micheli, Marco , Bruccoleri, Melchiorre , Rigazio, Luca
CPC classification number: H03L7/07 , G11B20/1403
Abstract: The integrated circuit described comprises two phase-locked loops (R-PLL, W-PLL) each with its own oscillator (OSC-1, OSC-2). To prevent locking owing to injection between the two oscillators due to stray currents in the integrated circuit, a noise generator (N-GEN) is coupled to the oscillator (OSC-2) of one of the loops (W-PLL) and means (TM) are provided for activating the noise generator (N-GEN) in a manner such that the noise injected changes the frequency of the oscillator (OSC-2) randomly when the other loop (R-PLL) is in operation.
Abstract translation: 集成电路描述由两锁相环（R-PLL，W-PLL）每个都有其自己的振荡器（OSC-1，OSC-2）。 为了防止由于两个振荡器之间的喷射由于在集成电路杂散电流锁定，噪声发生器（N-GEN）耦合到所述环中的一个（W-PLL）以及装置（的振荡器（OSC-2） TM）被提供用于激活噪声发生器（N-GEN）（以检查的方式做了噪声注入变化的振荡器OSC-2）随机地当其他环（R-PLL）是在操作中的频率。
-
3.发明授权An integrated circuit with two phase-locked loops and with means for preventing locking owing to injection 失效一种集成电路，其包括两个锁相环的装置，以及用于防止注入同步
公开(公告)号：EP0892499B1
公开(公告)日：2000-09-27
申请号：EP97830351.9
申请日：1997-07-14
Applicant: STMicroelectronics S.r.l.
Inventor： Celant, Luca , De Micheli, Marco , Bruccoleri, Melchiorre , Rigazio, Luca
CPC classification number: H03L7/07 , G11B20/1403
-
4.发明公开Transconductance control circuit, particularly for continous-time circuits 失效Schaltungen的Transkonduktanzsteuerschaltung insbesonderefürzeitkontinuierliche
公开(公告)号：EP0957578A1
公开(公告)日：1999-11-17
申请号：EP98830296.4
申请日：1998-05-15
Applicant: STMicroelectronics S.r.l.
CPC classification number: H03F3/3001 , H03H11/0472
Abstract: A transconductance control circuit, particularly for a continuous-time filter, comprising a transconductor (4) across which a constant voltage is input; the transconductor is connected to a DAC (7) to set a reference current (I R ); a feedback loop (9, 10, 23, 11) is provided between the output of the transconductor (4) and its input; the particularity of the circuit is the fact that it further comprises means (20, 22, 24) for mirroring the reference current (I R ) set by the DAC (7) which are suitable to mirror the current both to the feedback loop and to at least one cell of a filter which is cascade-connected.
Abstract translation: 一种跨导控制电路，特别是用于连续时间滤波器，包括跨导体（4），输入恒定电压; 跨导器连接到DAC（7）以设置参考电流（IR）; 在跨导体（4）的输出端与其输入端之间提供反馈回路（9,10,23,11） 电路的特殊性是其进一步包括用于镜像由DAC（7）设置的参考电流（IR）的装置（20,22,24），其适于将电流镜像到反馈回路并且到 串联连接的滤波器的至少一个单元。
-
-
-
Search Results
4
records
(took 0.023 seconds)
