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公开(公告)号：US5359299A
公开(公告)日：1994-10-25
申请号：US6396
申请日：1993-01-21
申请人： Stephen Webster
发明人： Stephen Webster
CPC分类号： G05F3/22 , H02M3/07 , H03L7/0896
摘要： A device for converting binary logic pulses into an output current and the output current being switchable between a positive and negative polarity. The device provides a charge pump circuit which is suitable for the phase-detector stage in a phase-locked loop (PLL) circuit. The charge pump circuit comprises an input stage for the "UP" binary logic pulses and a second stage for the "DOWN" binary logic pulses. The input stages comprise emitted-coupled transistor pairs. The circuit includes current sources and current sinks for generating the output current in the input stages in response to the binary logic pulses. The circuit features a pair of switch diodes coupled between the outputs of the input stages. The diodes form a commutator which controls the direction of the output current and the leakage current during the idle states. The circuit also includes a clamping circuit to limit the voltage swing across the switching diodes. The charge pump circuit according to the present invention exhibits a fast response time, a symmetrical response to the binary logic pulses, and virtually zero leakage current in the idle state. The charge pump circuit utilizes non-complimentary bipolar processes and is suitable for a monolithic integrated circuit implementation.
摘要翻译： 用于将二进制逻辑脉冲转换为输出电流并且输出电流可在正极性和负极性之间切换的装置。 该器件提供了适用于锁相环（PLL）电路中的相位检测器级的电荷泵电路。 电荷泵电路包括用于“UP”二进制逻辑脉冲的输入级和用于“DOWN”二进制逻辑脉冲的第二级。 输入级包括发射耦合晶体管对。 该电路包括用于响应二进制逻辑脉冲在输入级产生输出电流的电流源和电流吸收器。 该电路具有耦合在输入级的输出端之间的一对开关二极管。 二极管形成一个整流子，它在空闲状态下控制输出电流的方向和漏电流。 该电路还包括钳位电路，以限制开关二极管的电压摆幅。 根据本发明的电荷泵电路表现出快速响应时间，对二进制逻辑脉冲的对称响应，以及在空闲状态下几乎为零的泄漏电流。 电荷泵电路采用非互补双极性工艺，适用于单片集成电路实现。
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42.发明授权Apparatus and method for producing a temperature-independent current signal in an automatic gain control circuit 失效在自动增益控制电路中产生与温度无关的电流信号的装置和方法
公开(公告)号：US5352944A
公开(公告)日：1994-10-04
申请号：US41517
申请日：1993-04-01
CPC分类号： H03G1/04 , G05F3/225 , H03G1/0023
摘要： A circuit particularly useful in AGC systems, produces an output current which is proportional to the difference between a signal voltage and a reference voltage which is practically independent of temperature. By being a function of a ratio among actual values of integrated resistances and of a ratio among substantially temperature-stable voltages. The effects of temperature dependent value of integrated resistances and of temperature-dependent electrical characteristics of integrated semiconductor devices are compensated in order to produce the desired temperature-independent output current which may usefully be utilized for implementing an automatic gain control.
摘要翻译： 在AGC系统中特别有用的电路产生与信号电压和实际上与温度无关的参考电压之间的差成比例的输出电流。 通过作为积分电阻的实际值之间的比值和基本上温度稳定的电压之间的比率的函数。 对集成电阻的温度依赖性值和集成半导体器件的温度依赖性电特性的影响进行补偿，以产生所需的温度无关输出电流，这可有效地用于实现自动增益控制。
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公开(公告)号：US5339020A
公开(公告)日：1994-08-16
申请号：US916517
申请日：1992-07-20
CPC分类号： G05F3/222
摘要： An integrated circuit bandgap voltage reference, in which the regulated voltage is equal to the sum of a first transistor's base-emitter voltage plus a voltage which is proportional to the difference between the base-emitter voltages of two transistors operating at different current densities, PLUS an additional voltage which is equal to the base-emitter drop of an additional transistor. The additional transistor is connected to an emitter resistor which ensures that variations in resistor values will cause the base-emitter drop of the additional transistor to vary oppositely to the base-emitter drop of the first transistor. The resulting voltage reference circuit has high stability and low power consumption.
摘要翻译： 一种集成电路带隙电压参考，其中调节电压等于第一晶体管的基极 - 发射极电压加上与以不同电流密度工作的两个晶体管的基极 - 发射极之间的差成比例的电压的总和，PLUS 附加电压等于附加晶体管的基极 - 发射极点。 附加晶体管连接到发射极电阻器，其确保电阻器值的变化将引起附加晶体管的基极 - 发射极下降与第一晶体管的基极 - 发射极下降相反。 所得的电压基准电路具有高稳定性和低功耗。
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公开(公告)号：US5293112A
公开(公告)日：1994-03-08
申请号：US917422
申请日：1992-07-23
申请人： Norihito Takahashi
发明人： Norihito Takahashi
CPC分类号： G05F3/227 , G05F3/30 , Y10S323/901 , Y10S323/907
摘要： A constant-current source including a constant-current output circuit for supplying a constant current provided with one or more transistors with the bases biased with the same base potential, a first circuit which provides a first current signal for setting the strength of the constant current to be delivered from the constant-current output circuit, a second circuit which generates a second current signal and provides the same base potential in response to the second current signal, a third circuit which controls the second current signal to minimize any deviation of the second current signal from the first current signal, and a DC power supply for energizing at least the first, second and third circuits. The improvement is that the transconductance of the first circuit which represents the ratio of a change in the first current signal to a change in the output voltage of the DC power supply is equal to the transconductance of the second circuit which represents the ratio of a change in the second current signal to a change in the output voltage of the DC power supply.
摘要翻译： 一种恒流源，包括恒流输出电路，用于提供具有偏置有相同基极电位的基极的一个或多个晶体管的恒定电流;第一电路，其提供用于设定恒定电流强度的第一电流信号 从恒流输出电路传送的第二电路，产生第二电流信号并响应于第二电流信号提供相同的基极电位的第二电路;第三电路，其控制第二电流信号以最小化第二电流信号的任何偏差 来自第一电流信号的电流信号，以及用于至少对第一，第二和第三电路通电的直流电源。 改进之处在于，代表第一电流信号的变化与直流电源的输出电压变化的比率的第一电路的跨导等于代表变化比的第二电路的跨导 在第二电流信号中改变直流电源的输出电压。
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公开(公告)号：US5258703A
公开(公告)日：1993-11-02
申请号：US923638
申请日：1992-08-03
申请人： Phuc C. Pham , Lou Spangler , Greg Davis
发明人： Phuc C. Pham , Lou Spangler , Greg Davis
CPC分类号： G05F3/30 , G05F3/222 , Y10S323/907
摘要： A temperature compensated voltage regulator circuit having a first resistor (R.sub.X) disposed in the base circuit between two cascaded transistors and a second resistor (R.sub.F) coupled between the collector and base of the first of the two transistors to provide compensation for beta variations in the transistors resulting from process variables during the manufacture of the circuit.
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46.发明授权
公开(公告)号：US5182462A
公开(公告)日：1993-01-26
申请号：US845312
申请日：1992-03-03
申请人： Michael E. Wright
发明人： Michael E. Wright
CPC分类号： G05F3/22 , G05F1/561 , Y10T307/50
摘要： A novel circuit is taught to provide a smooth current transfer function over a range of two input voltages, so that power can be supplied to an electronic circuit from more than a single power source. In one embodiment such power sources include a battery and an DC supply operated off the AC mains. Associated with each such supply is a current source designed to provide a reference current. This reference current is used to establish mirror currents from each of the power leads in order to provide the desired output current.
摘要翻译： 教导了一种新颖的电路，以在两个输入电压的范围内提供平滑的电流传递函数，从而可以从多于一个的电源向电子电路供电。 在一个实施例中，这样的电源包括电池和从AC电源操作的DC电源。 与每个这样的电源相关联的是设计用于提供参考电流的电流源。 该参考电流用于建立来自每个电源引线的反射镜电流，以便提供期望的输出电流。
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公开(公告)号：US5175489A
公开(公告)日：1992-12-29
申请号：US689744
申请日：1991-05-21
申请人： Yasuo Mizuide
发明人： Yasuo Mizuide
摘要： A current-detecting circuit detects the value of a current which flows out of an output circuit incorporated in an integrated circuit. A current-detecting resistor (17) is located at an intermediate point of the path along which the current flows out of the output circuit. The emitters of two NPN transistors (15, 16), for which a collector area ratio of N:1 is determined, are connected to the ends of the resistor (17), respectively. The bases of the NPN transistors (15, 16) are connected together, and the base and collector of one (15) of the NPN transistors are connected together. A current mirror circuit (14), which is made up of two PNP transistors (12, 13) and for which an input-to-output current ratio of M:1 determined, is connected to the collectors of the NPN transistors (15, 16). The base of an output NPN transistor (18) is connected to a node to which the collector of one (13) of the PNP transistors and the collector of one (16) of the NPN transistors are connected in common.
摘要翻译： PCT No.PCT / JP90 / 01253 Sec。 371日期1991年5月21日 102（e）日期1991年5月21日PCT 1990年9月28日PCT。电流检测电路检测流入集成电路中的输出电路的电流值。 电流检测电阻器（17）位于电流从输出电路流出的路径的中间点处。 确定了集电极面积比为N：1的两个NPN晶体管（15,16）的发射极分别连接到电阻器（17）的端部。 NPN晶体管（15,16）的基极连接在一起，一个（15）NPN晶体管的基极和集电极连接在一起。 由两个PNP晶体管（12,13）和确定的M：1的输入与输出电流比连接的电流镜电路（14）连接到NPN晶体管（15,13）的集电极 16）。 输出NPN晶体管（18）的基极连接到PNP晶体管中的一个（13）的集电极和一个（16）NPN晶体管的集电极共同连接的节点。
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公开(公告)号：US5164658A
公开(公告)日：1992-11-17
申请号：US693602
申请日：1991-04-30
申请人： Hisao Kuwahara
发明人： Hisao Kuwahara
摘要： An integrated circuit comprising circuits such as current mirror circuits, and designed to supply a current from a current source to a load. The circuit comprises two current mirror circuits, two transistors, a current source, and a load. Either current mirror circuit has a power-supply terminal, an input terminal and an output terminal. Either transistor has two ends and an input terminal. The current source has two ends, an the load also has two ends. The current source is connected at the first end to a first power source, and at the second end to the input terminal of the first transistor. The first transistor is coupled at the first end to a second power source, and at the second end to the input terminal of the first current mirror circuit. The first current mirror circuit has its power-supply terminal coupled to the first power source, and its output terminal coupled to the input terminal of the second current mirror circuit. The second current mirror circuit has its power-supply terminal coupled to the second power source, and its output terminal coupled to the node of the input terminal of the first transistor and the second end of said current source. The second transistor has its input terminal connected so that of the first transistor, its first end coupled to the second power source, and its second end connected to the first end of the load. The other end of the load is coupled to the first power source.
摘要翻译： 包括诸如电流镜电路的电路的集成电路，并且被设计成将电流从电流源提供给负载。 电路包括两个电流镜电路，两个晶体管，一个电流源和一个负载。 电流镜电路都有一个电源端子，一个输入端子和一个输出端子。 晶体管有两端和输入端。 电流源有两端，负载也有两端。 电流源在第一端连接到第一电源，第二端连接到第一晶体管的输入端。 第一晶体管在第一端耦合到第二电源，并且在第二端耦合到第一电流镜电路的输入端。 第一电流镜电路的电源端耦合到第一电源，其输出端耦合到第二电流镜电路的输入端。 第二电流镜电路具有耦合到第二电源的电源端，其输出端耦合到第一晶体管的输入端的节点和所述电流源的第二端。 第二晶体管的输入端连接成第一晶体管，其第一端耦合到第二电源，其第二端连接到负载的第一端。 负载的另一端耦合到第一电源。
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公开(公告)号：US5130637A
公开(公告)日：1992-07-14
申请号：US648849
申请日：1991-01-31
申请人： Yasuhisa Sugo
发明人： Yasuhisa Sugo
IPC分类号： G05F3/22
摘要： A constant voltage generating circuit includes a first power supply line coupled to an external power supply line, at least one second power supply line having a voltage different from that of the first power supply line, a level shift circuit having at least one transistor coupled between the first power supply line and the second power supply line, a resistor having one end connected to one of the first and second power supply lines and other end coupled to a base of a transistor provided at a final stage of the level shift circuit, and a current control circuit operatively connected between the other end of the resistor and another of the first and second power supply lines. The current control circuit suitably controls current flowing in the resistor. As a result, it is possible to continually feed a constant voltage irrespective of a fluctuation in temperature, power supply voltage, or the like.
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50.发明授权Voltage reference having steep temperature coefficient and method of operation 失效电压基准具有陡峭的温度系数和操作方法
公开(公告)号：US5121049A
公开(公告)日：1992-06-09
申请号：US502376
申请日：1990-03-30
申请人： Alan S. Bass
发明人： Alan S. Bass
IPC分类号： G05F1/46 , G05F3/22 , H03K19/0175
CPC分类号： H03K19/017518 , G05F1/463 , G05F3/225 , H03K19/017581 , Y10S323/907
摘要： There is disclosed a temperature compensated reference voltage generation circuit and method adapted to maintain a specific temperature/voltage relationship. The circuit is designed such that it can easily be adapted to switch between different voltage temperature requirements simply by adjusting the parameters of a few circuit elements. The circuit relies upon three different current generators, each performing a different function.
摘要翻译： 公开了一种适于维持特定温度/电压关系的温度补偿参考电压产生电路和方法。 该电路被设计成使得它可以容易地适应于仅通过调节几个电路元件的参数来在不同的电压温度要求之间切换。 该电路依赖于三个不同的电流发生器，每个发生器执行不同的功能。
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