公开(公告)号：US06545627B1

公开(公告)日：2003-04-08

申请号：US10033954

申请日：2001-12-19

申请人： Yueming He ,  Bart R. McDaniel

发明人： Yueming He ,  Bart R. McDaniel

IPC分类号： H03M112

CPC分类号： H03M1/403

摘要： Briefly, in accordance with an embodiment of the invention, a method and circuit to perform an analog-to-digital conversion is provided. The method may include generating and storing a combined charge which is generated by combining an input charge and a reference charge.

摘要翻译： 简而言之，根据本发明的实施例，提供了一种执行模数转换的方法和电路。 该方法可以包括生成和存储通过组合输入电荷和参考电荷而产生的组合电荷。

公开(公告)号：US6121913A

公开(公告)日：2000-09-19

申请号：US262949

申请日：1999-03-04

申请人： Kevin W. Glass ,  Waleed Khalil ,  Bart R. McDaniel

发明人： Kevin W. Glass ,  Waleed Khalil ,  Bart R. McDaniel

IPC分类号： G11C7/06 ,  H03K5/24 ,  H03M1/36

CPC分类号： H03M1/366 ,  G11C7/062 ,  H03K5/2481 ,  H03K5/249 ,  G11C2207/063

摘要： A method and apparatus for performing analog to digital conversion. A voltage to current converter converts an analog input voltage to an input current. A current reference generates a reference current. A plurality of scaling elements scaled the reference current to yield a plurality of scaled reference currents each corresponding to some voltage level within the dynamic range of the input voltage. The input current is compared to each of the scaled reference currents in a plurality of current comparators to generate a thermometer code from which a digital representation of the analog input voltage is derived.

摘要翻译： 一种用于执行模数转换的方法和装置。 电压/电流转换器将模拟输入电压转换为输入电流。 当前参考产生参考电流。 多个缩放元件缩放参考电流以产生多个缩放的参考电流，每个基准电流对应于在输入电压的动态范围内的一些电压电平。 将输入电流与多个电流比较器中的每个缩放参考电流进行比较，以生成温度计代码，从该温度计代码中导出模拟输入电压的数字表示。

公开(公告)号：US6037890A

公开(公告)日：2000-03-14

申请号：US940159

申请日：1997-09-30

申请人： Kevin W. Glass ,  Waleed Khalil ,  Bart R. McDaniel

发明人： Kevin W. Glass ,  Waleed Khalil ,  Bart R. McDaniel

IPC分类号： G11C7/06 ,  H03K5/24 ,  H03M1/36

CPC分类号： H03M1/366 ,  G11C7/062 ,  H03K5/2481 ,  H03K5/249 ,  G11C2207/063

摘要： A method and apparatus for performing analog to digital conversion. A voltage to current converter converts an analog input voltage to an input current. A current reference generates a reference current. A plurality of scaling elements scaled the reference current to yield a plurality of scaled reference currents each corresponding to some voltage level within the dynamic range of the input voltage. The input current is compared to each of the scaled reference currents in a plurality of current comparators to generate a thermometer code from which a digital representation of the analog input voltage is derived.

摘要翻译： 一种用于执行模数转换的方法和装置。 电压/电流转换器将模拟输入电压转换为输入电流。 当前参考产生参考电流。 多个缩放元件缩放参考电流以产生多个缩放的参考电流，每个基准电流对应于在输入电压的动态范围内的一些电压电平。 将输入电流与多个电流比较器中的每个缩放参考电流进行比较，以生成温度计代码，从该温度计代码中导出模拟输入电压的数字表示。

公开(公告)号：US07233776B2

公开(公告)日：2007-06-19

申请号：US10879544

申请日：2004-06-29

申请人： Kevin W. Glass ,  Bart R. McDaniel

发明人： Kevin W. Glass ,  Bart R. McDaniel

IPC分类号： H04B1/44

CPC分类号： H01H59/0009 ,  H01H47/325

摘要： According to one embodiment a microelectromechanical (MEMS) switch is disclosed. The MEMS switch includes a pulse generator to provide a low voltage source, a transformer coupled to the pulse generator to boost a voltage received from the pulse generator and a switch component coupled to the pulse generator. The switch component includes an actuation capacitor to store charge associated with the voltage received from the transformer.

摘要翻译： 根据一个实施例，公开了一种微机电（MEMS）开关。 MEMS开关包括提供低电压源的脉冲发生器，耦合到脉冲发生器的变压器，以升高从脉冲发生器接收的电压和耦合到脉冲发生器的开关部件。 开关组件包括用于存储与从变压器接收的电压相关联的电荷的致动电容器。

公开(公告)号：US6008673A

公开(公告)日：1999-12-28

申请号：US265217

申请日：1999-03-04

申请人： Kevin W. Glass ,  Waleed Khalil ,  Bart R. McDaniel

发明人： Kevin W. Glass ,  Waleed Khalil ,  Bart R. McDaniel

IPC分类号： G11C7/06 ,  H03K5/24 ,  H03M1/36 ,  H03K5/22

CPC分类号： H03M1/366 ,  G11C7/062 ,  H03K5/2481 ,  H03K5/249 ,  G11C2207/063

摘要： A current regenerative comparator. A pair of cross coupled inverters are coupled to an equalizing transistor, an input current mirror and a reference current mirror, such that current flowing in the input current mirror is compared to the current flowing in the reference current mirror.

摘要翻译： 一个当前的再生比较器。 一对交叉耦合的反相器耦合到均衡晶体管，输入电流镜和参考电流镜，使得在输入电流镜中流动的电流与在参考电流镜中流动的电流相比较。

公开(公告)号：US4835487A

公开(公告)日：1989-05-30

申请号：US181607

申请日：1988-04-14

申请人： James T. Doyle ,  Bart R. McDaniel

发明人： James T. Doyle ,  Bart R. McDaniel

IPC分类号： H03F3/34 ,  H03F3/345 ,  H03F3/347

CPC分类号： H03F3/345

摘要： A voltage to current converter circuit manufactured with a MOS process generates a linear reference current over a wide bandwidth and operates with an input signal that varies to either supply rail. A voltage divider network scales an input voltage for conversion to a linear current by a cascode current mirror and a gain resistor. The value of the gain resistor determines the transconductance of the conversion from voltage to current. A second current mirror provides feedback to keep the reference current accurate. An output stage makes available high impedance source and sink current output terminals wherein a source current and a sink current relative to the reference current are provided. Several voltage to current converter circuits may be coupled together to provide a addition, subtraction, multiplication, and other circuit and system functions.

公开(公告)号：US06891488B1

公开(公告)日：2005-05-10

申请号：US10696946

申请日：2003-10-30

申请人： Bart R. McDaniel ,  Malcolm H. Smith

发明人： Bart R. McDaniel ,  Malcolm H. Smith

IPC分类号： H03M1/10 ,  H03M1/74 ,  H03M3/04 ,  H03M3/00

CPC分类号： H03M1/1057 ,  H03M1/742 ,  H03M3/424 ,  H03M3/45 ,  H03M3/454

摘要： An Nth-order sigma-delta analog-to-digital converter (ADC) system having multilevel quantized feedback. A multilevel quantized feedback stage incorporates a multibit, current-mode digital-to-analog converter (DAC). In one embodiment, reference current sources for the DAC may comprise a plurality of floating-gate MOS transistors so that analog nonvolatile precision linearity trimming of the feedback DAC may be accomplished. Calibration of the DAC may be performed at a relatively low refresh rate, for example, only at instances when the sigma-delta ADC system is activated.

摘要翻译： 具有多电平量化反馈的第N个Σ-Δ模数转换器（ADC）系统。 多电平量化反馈级采用多位电流模式数模转换器（DAC）。 在一个实施例中，用于DAC的参考电流源可以包括多个浮栅MOS晶体管，使得可以实现反馈DAC的模拟非易失性精度线性修整。 DAC的校准可以以相对低的刷新速率执行，例如仅在Σ-ΔADC系统被激活的情况下执行。

公开(公告)号：US06400189B2

公开(公告)日：2002-06-04

申请号：US09460743

申请日：1999-12-14

申请人： Bart R. McDaniel

发明人： Bart R. McDaniel

IPC分类号： H03B100

CPC分类号： H03K19/00315

摘要： A buffer circuit includes an amplifier, a pass gate circuit and a level shifter. The pass gate circuit communicates an input signal to the amplifiers and includes a terminal to control the communication. A level shifter furnishes a control signal to the terminal of the pass gate circuit and regulates the control signal based on a magnitude of the input signal.

摘要翻译： 缓冲电路包括放大器，通路电路和电平转换器。 通路电路将输入信号传送到放大器，并且包括用于控制通信的端子。 电平移位器向通道门电路的端子提供控制信号，并基于输入信号的幅度来调节控制信号。

公开(公告)号：US06255979B1

公开(公告)日：2001-07-03

申请号：US09258116

申请日：1999-02-24

申请人： David R. Allee ,  Bart R. McDaniel

发明人： David R. Allee ,  Bart R. McDaniel

IPC分类号： H03M136

CPC分类号： H03M1/1061 ,  H03M1/0682 ,  H03M1/362

摘要： An analog-to-digital converter (ADC) is provided. The analog-to-digital converter includes a plurality of differential comparators. For each of the plurality of differential comparators the ADC receives differential input signals and differential reference signals and generates an output signal. The ADC also includes a self-calibration circuit to receive from each of the plurality of differential comparators the output signal. In response to the output signal, the self-calibration circuit generates a self-calibration signal. The ADC further includes an adjustable reference signal generator to provide the differential reference signals based on the self-calibration signal.

摘要翻译： 提供了一个模拟 - 数字转换器（ADC）。 该模数转换器包括多个差分比较器。 对于多个差分比较器中的每一个，ADC接收差分输入信号和差分参考信号并产生输出信号。 ADC还包括自校准电路，用于从多个差分比较器中的每一个接收输出信号。 响应于输出信号，自校准电路产生自校准信号。 ADC还包括可调参考信号发生器，以基于自校准信号提供差分参考信号。

公开(公告)号：US5301097A

公开(公告)日：1994-04-05

申请号：US896195

申请日：1992-06-10

申请人： Bart R. McDaniel

发明人： Bart R. McDaniel

IPC分类号： H02M3/07 ,  H02M7/25

CPC分类号： H02M3/073

摘要： A multiple staged charge pump network with staggered clock phases for pumping a first voltage to a second voltage with high current capability. The charge pump includes multiple serial charge pumps connected in parallel, multi-phase clocks, input voltage and output voltage connectors. The multiple serial charge pumps have in each series a plurality of diode-connected n-channel MOSFETs. The first n-channel MOSFET in each series is coupled to the input voltage connector, while the rest of the n-channel MOSFETs are coupled to a pumping capacitor at their diode-connected gates. The clocks are coupled to the multiple serial charge pumps for generating a plurality of phases of clocks with each phase of the clocks being applied to the alternating n-channel MOSFETs in a series such that adjoining n-channel MOSFETs are not driven by the same phase of clock. The input voltage connector is coupled to the first n-channel MOSFET in each series of the multiple serial charge pump for providing an input voltage. The output voltage connector is coupled to the last n-channel MOSFET in each series of the multiple serial charge pump for generating an output voltage after the input voltage is switched-regulated through the multiple serial charge pump.

摘要翻译： 具有交错时钟相位的多级电荷泵网络，用于将第一电压泵送到具有高电流能力的第二电压。 电荷泵包括并联连接的多个串联电荷泵，多相时钟，输入电压和输出电压连接器。 多个串联电荷泵在每个串联中具有多个二极管连接的n沟道MOSFET。 每个系列中的第一个n沟道MOSFET耦合到输入电压连接器，而其余的n沟道MOSFET在二极管连接的栅极耦合到一个泵浦电容器。 时钟耦合到多个串行电荷泵，用于产生多个时钟相位，每个时钟的相位被串联地施加到交替的n沟道MOSFET，使得相邻的n沟道MOSFET不被相同相位驱动 的时钟。 输入电压连接器耦合到多串联电荷泵的每个系列中的第一n沟道MOSFET，以提供输入电压。 输出电压连接器耦合到多串联电荷泵的每个系列中的最后一个n沟道MOSFET，用于在通过多串联电荷泵切换输入电压之后产生输出电压。