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公开(公告)号：US4138665A
公开(公告)日：1979-02-06
申请号：US835068
申请日：1977-09-21
摘要： A preamplifier using charge transfer techniques is formed on the same chip as a charge transfer analog to digital converter. The preamplifier then couples low level output sensors directly to the converter without need for a costly interfacing amplifier.
摘要翻译： 使用电荷转移技术的前置放大器形成在与电荷转移模数转换器相同的芯片上。 然后，前置放大器将低电平输出传感器直接耦合到转换器，而不需要昂贵的接口放大器。
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公开(公告)号：US4070666A
公开(公告)日：1978-01-24
申请号：US698012
申请日：1976-06-21
CPC分类号： H03M1/1215
摘要： An analog-to-digital converter of the metered charge transfer type is provided including an automatic polarity sensing circuit which selectively connects first and second input terminals to a charge storage location at appropriate times during a measurement cycle in order to insure that proper polarity relationships are maintained.
摘要翻译： 提供了计量电荷转移类型的模数转换器，其包括自动极性检测电路，其在测量周期期间的适当时间选择性地将第一和第二输入端子连接到电荷存储位置，以确保适当的极性关系为 保持。
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公开(公告)号：US4070600A
公开(公告)日：1978-01-24
申请号：US753773
申请日：1976-12-23
CPC分类号： H03K5/023
摘要： A semiconductor switching circuit utilizes a relatively low breakdown voltage transistor for switching between a higher and a lower voltage by switching between a first conducting state of said transistor which is a "turned-on" state and a second state which is a "breakdown" state. The switching circuit is especially useful for the operation of display devices.
摘要翻译： 半导体开关电路利用相对较低的击穿电压晶体管，通过在“导通”状态的所述晶体管的第一导通状态与作为“分断”状态的第二状态之间切换，在高电压和低电压之间切换 。 开关电路对于显示装置的操作特别有用。
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公开(公告)号：US4145748A
公开(公告)日：1979-03-20
申请号：US863875
申请日：1977-12-23
CPC分类号： G06F3/044 , H03K17/9622 , H03K2017/9615 , Y10T307/826
摘要： A plurality of capacitive touch pad sensors are multiplexed to the input of a common charge transfer analog-to-digital converter (CTAD) under the control of a control logic circuit. The no-touch digital output of each touch pad is stored in a memory. The touch pads are then sequentially addressed and their output level is digitized in the CTAD and the digital output of each touch pad is compared to its no-touch value stored in the memory. If the digital value read is sufficiently different from the no-touch memorized value, a touch-detection signal is given. The no-touch digital reading in the memory is periodically updated, by a count of only one at most, if the updated no-touch value differs from the no-touch value in the memory.
摘要翻译： 在控制逻辑电路的控制下，多个电容式触摸板传感器被复用到公共电荷传输模数转换器（CTAD）的输入端。 每个触摸板的无触摸数字输出被存储在存储器中。 触摸板然后被顺序寻址，并且它们的输出电平在CTAD中被数字化，并且每个触摸板的数字输出与存储在存储器中的无触摸值进行比较。 如果数字值读取与无触摸存储值充分不同，则给出触摸检测信号。 如果更新的无触摸值与存储器中的无触摸值不同，则存储器中的无触摸数字读取被定期更新，最多只有一个。
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5.发明授权
公开(公告)号：US4250494A
公开(公告)日：1981-02-10
申请号：US56070
申请日：1979-07-09
摘要： A charge transfer analog-to-digital converter is provided with means to establish the potential across a large storage well at a comparator threshold voltage at the initiation of a cycle. Charge transfer circuitry is also provided for transferring, into the large potential well, charge packets of size dependent only upon the value of a charge packet capacitance and a scaling voltage. Parasitic capacitance effects are essentially eliminated.
摘要翻译： 电荷转移模数转换器具有在周期开始时以比较器阈值电压建立跨越大存储阱的电位的装置。 还提供电荷转移电路用于将大小依赖于电荷分组电容和缩放电压的值传送到大电位阱中。 寄生电容效应基本消除。
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公开(公告)号：US4158804A
公开(公告)日：1979-06-19
申请号：US823383
申请日：1977-08-10
CPC分类号： G05F1/613
摘要： A stable temperature-insensitive constant reference voltage circuit is provided which can be implemented in either MOS or bipolar technology. The circuit may be implemented by MOSFET devices on a single chip with another circuit such as an A/D converter to provide a monolithic A/D converter with its own internal reference voltage circuit. The reference voltage circuit consists of a series-connected long channel MOSFET and short channel MOSFET which produce, at their junction, a temperature-independent voltage. A differential circuit containing three MOSFET devices is then provided with one of the devices serving as a current source which carries the current of the other two MOSFET devices which are in parallel. The gates of the two parallel MOSFET devices are connected respectively to the junction between the long channel and short channel device and to the output voltage. Current divides between the two parallel MOSFET devices in such a way as to cause a constant output voltage to be produced regardless of the variations of the supply voltage sources V.sub.dd or V.sub.gg. The various MOSFET devices are formed on the same substrate containing the circuit components being connected to the constant stable voltage reference source.
摘要翻译： 提供了一种稳定的温度不敏感常数参考电压电路，可以以MOS或双极技术实现。 该电路可以由单个芯片上的MOSFET器件与另一个电路（例如A / D转换器）来实现，以提供具有其自己的内部参考电压电路的单片A / D转换器。 参考电压电路由串联连接的长沟道MOSFET和短沟道MOSFET组成，在其结点处产生与温度无关的电压。 然后提供包含三个MOSFET器件的差分电路，其中一个器件用作电流源，其承载并联的另外两个MOSFET器件的电流。 两个并联MOSFET器件的栅极分别连接到长沟道和短沟道器件之间的结以及输出电压。 电流在两个并联MOSFET器件之间以这样的方式分开，以便产生恒定的输出电压，而不管电源电压源Vdd或Vgg的变化如何。 各种MOSFET器件形成在同一基板上，该基板包含连接到恒定稳定电压基准源的电路元件。
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公开(公告)号：US4117353A
公开(公告)日：1978-09-26
申请号：US753772
申请日：1976-12-23
CPC分类号： H01L27/088 , G04G9/0047 , G05F3/247
摘要： A solid state cathode driver circuit for controllably sinking a current substantially independent of applied voltage includes a main current carrying transistor and first and second field effect transistors connected to a controlled electrode of the current carrying transistor for setting the potential on the control electrode substantially independent of the applied voltages to the controlled terminals. The magnitude of the sunk current is essentially determined by the geometry of the device utilized and is, therefore, essentially constant. Selective activation of the current sink is provided by grounding the control electrode to turn off the device.
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公开(公告)号：US4065766A
公开(公告)日：1977-12-27
申请号：US668329
申请日：1976-03-18
CPC分类号： H03M1/508
摘要： A charge transfer analog-to-digital converter is provided wherein a plurality of charge packets is transferred into and out of a charge storage location which includes both linear and nonlinear capacitive components. At the initiation of an analog-to-digital measurement cycle the level of charge in the nonlinear portion of the charge storage location is established at an initial value by comparison with a reference voltage. During the measurement cycle the level of charge in the linear and nonlinear portions of the capacitive charge storage location vary from the initial values thereof as charge is transferred into and out of the charge storage location according to the particular method of analog-to-digital conversion. At the end of the measurement cycle, the level of charge in the nonlinear portion is again established at the initial value thereof so that the net change in charge stored in the nonlinear portion of the charge storage location is zero from the beginning to the end of the measurement cycle.
摘要翻译： 提供了一种电荷转移模数转换器，其中多个电荷包被传送到包括线性和非线性电容分量的电荷存储位置中。 在开始模拟数字测量循环时，通过与参考电压相比，电荷存储位置的非线性部分中的电荷水平以初始值建立。 在测量周期期间，电容性电荷存储单元的线性和非线性部分中的电荷电平根据其初始值而变化，因为根据模数转换的特定方法将电荷转移到电荷存储位置和从电荷存储位置传出 。 在测量周期结束时，非线性部分中的电荷电平在其初始值处再次建立，使得存储在电荷存储位置的非线性部分中的电荷的净变化从零开始到结束 测量周期。
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公开(公告)号：US4180807A
公开(公告)日：1979-12-25
申请号：US852234
申请日：1977-11-17
CPC分类号： H03M1/1225
摘要： A charge transfer circuit of the type including first and second capacitors separated by a charge transfer MOSFET is disclosed. The disclosure includes the description of a circuit which compensates for variations in the threshold voltage of the charge transfer MOSFET such that the magnitude of the charge packet transferred from the first to the second capacitor is substantially independent of changes in the magnitude of the threshold voltage.
摘要翻译： 公开了一种包括由电荷转移MOSFET分离的第一和第二电容器的电荷转移电路。 本公开包括补偿电荷转移MOSFET的阈值电压的变化的电路的描述，使得从第一电容器转移到第二电容器的电荷分组的幅度基本上与阈值电压的幅度的变化无关。
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公开(公告)号：US4165478A
公开(公告)日：1979-08-21
申请号：US835067
申请日：1977-09-21
摘要： A reference voltage source, relatively insensitive to changes in ambient temperature and supply voltage, utilizes a plurality of charge transfer amplifiers each having a temperature-stable amplification factor determined essentially by the ratio of two capacitances and independent of temperature-related factors. The amplifiers operate to provide a punch-through reference device with a constant current to cause generation of a stable reference voltage.
摘要翻译： 对环境温度和电源电压变化相对不敏感的参考电压源使用多个电荷传输放大器，每个电荷传输放大器具有基本上由两个电容的比率确定并且独立于温度相关因素的温度稳定的放大因子。 放大器用于提供具有恒定电流的穿通参考装置，以产生稳定的参考电压。
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