公开(公告)号：EP0743747A3

公开(公告)日：1998-04-08

申请号：EP96107080.2

申请日：1996-05-06

申请人： MOTOROLA, INC.

发明人： Connell, Lawrence E. ,  Hollenbeck, Neal W.

IPC分类号： H03F3/45

CPC分类号： H03F3/45076 ,  H03F2203/45201

摘要： A low voltage differential amplifier 10 or comparator is accomplished by providing an differential amplifier 10 that includes a transistor bias simulator 32 and a capacitance circuit 36. The transistor bias simulator 32 matches the gate to source bias voltage of the load transistor 22 and provides this value to the capacitance circuit 36. The capacitance circuit 36, which is coupled to a biasing reference voltage 38, charges a capacitor 84 based on the difference between the biasing reference voltage 38 and the simulated bias voltage 34. This charged capacitor 84 is used during an auto-zeroing phase to bias the drain to source voltage of the load transistor 22 to a state at which it is just beyond the onset of saturation.

公开(公告)号：EP0681272B1

公开(公告)日：2000-03-22

申请号：EP95106321.3

申请日：1995-04-27

申请人： MOTOROLA, INC.

发明人： Hollenbeck, Neal W. ,  Kang, David D.

IPC分类号： G07C5/04 ,  G01R23/10

CPC分类号： G07C5/04 ,  G01R31/007 ,  G07C3/04

公开(公告)号：EP0681272A3

公开(公告)日：1997-07-09

申请号：EP95106321.3

申请日：1995-04-27

申请人： MOTOROLA, INC.

发明人： Hollenbeck, Neal W. ,  Kang, David D.

IPC分类号： G07C5/04

CPC分类号： G07C5/04 ,  G01R31/007 ,  G07C3/04

摘要： An apparatus and method for determining a time that a system's main power was inactive includes a counter circuit (171) for accumulating transitions of a clock signal (149) while the system's main power (117) is inactive. Preferably, another circuit (159, 125) determines a periodicity of the clock signal (149) after the system's main power (117) transitions active. Then a computational circuit, preferably a microcontroller (129), determines the time (183) that the system's main power (117) was inactive dependent on a number of transitions of the clock signal (149) accumulated by the counter circuit (171) when the system's main power (119) was inactive and the determined periodicity of the clock signal (149) after the system's main power (117) transitions active. Preferably, this apparatus and method are used in a vehicle to determine how long a time that an engine is turned off and to modify an engine control strategy dependent on that determined time.

公开(公告)号：EP0743747A2

公开(公告)日：1996-11-20

申请号：EP96107080.2

申请日：1996-05-06

申请人： MOTOROLA, INC.

发明人： Connell, Lawrence E. ,  Hollenbeck, Neal W.

IPC分类号： H03F3/45

CPC分类号： H03F3/45076 ,  H03F2203/45201

摘要： A low voltage differential amplifier 10 or comparator is accomplished by providing an differential amplifier 10 that includes a transistor bias simulator 32 and a capacitance circuit 36. The transistor bias simulator 32 matches the gate to source bias voltage of the load transistor 22 and provides this value to the capacitance circuit 36. The capacitance circuit 36, which is coupled to a biasing reference voltage 38, charges a capacitor 84 based on the difference between the biasing reference voltage 38 and the simulated bias voltage 34. This charged capacitor 84 is used during an auto-zeroing phase to bias the drain to source voltage of the load transistor 22 to a state at which it is just beyond the onset of saturation.

摘要翻译： 该装置包括晶体管偏置模拟器（32）和电容电路（36）。 模拟器匹配负载晶体管（22）的栅极到源极偏置电压，并将该值提供给电容电路。 电容电路耦合到偏置参考电压，并且基于偏置参考电压和模拟偏置电压之间的差异对电容器充电。 充电的电容器在自动归零阶段期间被使用，以将负载晶体管的漏极与源极电压偏压到刚刚超过饱和开始的状态。

公开(公告)号：EP0681272A2

公开(公告)日：1995-11-08

申请号：EP95106321.3

申请日：1995-04-27

申请人： MOTOROLA, INC.

发明人： Hollenbeck, Neal W. ,  Kang, David D.

IPC分类号： G07C5/04

CPC分类号： G07C5/04 ,  G01R31/007 ,  G07C3/04

摘要： An apparatus and method for determining a time that a system's main power was inactive includes a counter circuit (171) for accumulating transitions of a clock signal (149) while the system's main power (117) is inactive. Preferably, another circuit (159, 125) determines a periodicity of the clock signal (149) after the system's main power (117) transitions active. Then a computational circuit, preferably a microcontroller (129), determines the time (183) that the system's main power (117) was inactive dependent on a number of transitions of the clock signal (149) accumulated by the counter circuit (171) when the system's main power (119) was inactive and the determined periodicity of the clock signal (149) after the system's main power (117) transitions active. Preferably, this apparatus and method are used in a vehicle to determine how long a time that an engine is turned off and to modify an engine control strategy dependent on that determined time.

摘要翻译： 该约会。 确定性开采时间确实不活动多包括时钟，而系统的主电源处于非活动状态提供时钟信号的系统的主电源。 的装置累积时钟信号的转变，而系统的主电源是不活动的，并且bestimmt的时钟信号的系统的主电源转换活性后的周期性的装置。 确定器评估时间，这不活动取决于多个时钟信号的累计转换的系统的主电源时不活动系统的主电源和系统的主电源转换活性之后，与时钟信号的确定性开采周期性。 确定器通过乘以所述时钟信号的累计转变的数量获得其评价当系统的主电源，其通过系统的主电源转换活性之后，与时钟信号的确定性开采周期性无效。