公开(公告)号：US09442610B2

公开(公告)日：2016-09-13

申请号：US13934496

申请日：2013-07-03

Applicant: Maxim Integrated Products, Inc.

Inventor： Ashutosh R. Joharapurkar ,  Jean C. Le ,  Natarajan Viswanathan ,  Patrick Chan

IPC: G06F3/045 ,  G06F3/044 ,  G06F3/041

CPC classification number: G06F3/0418 ,  G06F3/0416 ,  G06F3/044 ,  H03K17/96 ,  H03K2217/96062

Abstract: A differential sensing scheme provides a means for detecting one or more touch events on a touch sensitive device in the presence of incident noise. Instead of sensing one touch sensitive channel, such as a row, column, or single touch sensor, multiple touch sensitive channels are sampled at a time. By sampling two nearby channels simultaneously and doing the measurement differentially, noise common to both channels is cancelled. The differential sensing scheme is implemented using simple switch-capacitor AFE circuitry. The originally sensed data on each individual channel is recovered free of common-mode noise. The recovered sensed data is used to determine the presence of one or more touch events and if present the location of each touch event on the touch sensitive device.

公开(公告)号：US08830207B1

公开(公告)日：2014-09-09

申请号：US14070955

申请日：2013-11-04

Applicant: Maxim Integrated Products, Inc.

Inventor： Ashutosh R. Joharapurkar ,  Patrick Chan ,  David L. Allen ,  Natarajan Viswanathan

IPC: G06F3/045 ,  G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0418 ,  H03K17/9622 ,  H03K2217/96062

Abstract: A touchscreen system for increasing the dynamic range of the system comprising a touchscreen coupled to an offset cancellation element and a capacitance measuring element. The offset cancellation element is configured to be dynamically changed in capacitance such that it offsets parasitic and sensor capacitances of the touchscreen sensors thereby leaving only touch event capacitance to be measured by the measuring element. The offset cancellation element is able to adjust to the initial unwanted capacitances of each sensor as well as dynamically adjust to changes in the unwanted capacitance due to the environment. In some embodiments, the offset cancellation element is a capacitance digital-to-analog converter that is controlled by a controller for offsetting the unwanted capacitance. As a result, the touchscreen system is able to utilize a small integrating capacitor thereby lowering cost and improving the dynamic range of the system.

Abstract translation: 一种用于增加系统的动态范围的触摸屏系统，包括耦合到偏移抵消元件和电容测量元件的触摸屏。 偏移消除元件被配置为动态地改变电容，使得它抵消触摸屏传感器的寄生和传感器电容，从而仅留下测量元件测量的触摸事件电容。 偏移消除元件能够调整到每个传感器的初始不需要的电容，并且由于环境而动态地调整到不想要的电容的变化。 在一些实施例中，偏移抵消元件是由控制器控制以抵消不想要的电容的电容数模转换器。 因此，触摸屏系统能够利用小的积分电容器，从而降低成本并改善系统的动态范围。

公开(公告)号：US09337860B1

公开(公告)日：2016-05-10

申请号：US14721481

申请日：2015-05-26

Applicant: Maxim Integrated Products, Inc.

Inventor： Yuanfang Li ,  David Castaneda ,  Jean CauXuan Le ,  Patrick Chan

IPC: H03M1/66 ,  H03M1/74

CPC classification number: H03M1/0692 ,  H03M1/1038 ,  H03M1/68 ,  H03M1/785

Abstract: A system includes a sub-binary radix digital-to-analog converter (DAC) that converts a digital input signal to an analog output signal based on a sub-radix DAC code. A radix conversion module performs radix conversion on the digital input signal. To perform the radix conversion, the radix conversion module associates bit positions corresponding to the digital input signal with respective analog weights and converts the digital input signal to the sub-radix DAC code based on the respective analog weights.

Abstract translation: 一个系统包括一个二进制数字数模转换器（DAC），它将数字输入信号转换为基于子基DAC代码的模拟输出信号。 基数转换模块对数字输入信号执行基数转换。 为了进行基数转换，基数转换模块将对应于数字输入信号的比特位置与相应的模拟权重相关联，并且基于相应的模拟权重将数字输入信号转换为子基DAC代码。

公开(公告)号：US20140354328A1

公开(公告)日：2014-12-04

申请号：US14190311

申请日：2014-02-26

Applicant: Maxim Integrated Products, Inc.

Inventor： Arman Hematy ,  Martin Mason ,  Pierre Haubursin ,  Patrick Chan

IPC: H03K19/0175

CPC classification number: H03K19/017581 ,  H03M1/00 ,  H03M1/12 ,  H03M1/66

Abstract: Techniques are described for providing highly integrated and configurable IO ports for integrated circuits that can be individually configured for a variety of general purpose digital or analog functions, such as multiple channel analog-to-digital converters (ADC), multiple channel digital-to-analog converters (DAC), multiplexers, GPIOs, analog switches, switch and multiplexers, digital logic level translators, comparators, temperature sensors and relays, and so forth. The configurations of individual ports can be set by a configuration register that can, for instance, designate the function and voltage range of the port without impacting the other ports. In embodiments, logic mapping of a port order sequence can be defined. A data register can also be included for handling microcontroller commands and storing conversion results from, for instance, a port functioning as an ADC input port. These capabilities can be combined with its multi-range, high voltage and high current capability to increase functionality.

Abstract translation: 描述了为集成电路提供高度集成和可配置的IO端口的技术，该IO端口可以单独配置用于各种通用数字或模拟功能，如多通道模数转换器（ADC），多通道数模转换器 模拟转换器（DAC），多路复用器，GPIO，模拟开关，开关和多路复用器，数字逻辑电平转换器，比较器，温度传感器和继电器等。 各个端口的配置可以由配置寄存器设置，例如，可以指定端口的功能和电压范围而不影响其他端口。 在实施例中，可以定义端口顺序序列的逻辑映射。 还可以包括一个数据寄存器来处理微控制器命令，并存储来自例如作为ADC输入端口的端口的转换结果。 这些功能可以结合其多范围，高电压和高电流功能来增加功能。

公开(公告)号：US09525420B2

公开(公告)日：2016-12-20

申请号：US14867981

申请日：2015-09-28

Applicant: Maxim Integrated Products, Inc.

Inventor： Arman Hematy ,  Martin Mason ,  Pierre Haubursin ,  Patrick Chan

IPC: H03K19/0175 ,  H03M1/66 ,  H03M1/12 ,  H03M1/00

CPC classification number: H03K19/017581 ,  H03M1/00 ,  H03M1/12 ,  H03M1/66

Abstract: Techniques are described for providing highly integrated and configurable IO ports for integrated circuits that can be individually configured for a variety of general purpose digital or analog functions, such as multiple channel analog-to-digital converters (ADC), multiple channel digital-to-analog converters (DAC), multiplexers, GPIOs, analog switches, switch and multiplexers, digital logic level translators, comparators, temperature sensors and relays, and so forth. The configurations of individual ports can be set by a configuration register that can, for instance, designate the function and voltage range of the port without impacting the other ports. In embodiments, logic mapping of a port order sequence can be defined. A data register can also be included for handling microcontroller commands and storing conversion results from, for instance, a port functioning as an ADC input port. These capabilities can be combined with its multi-range, high voltage and high current capability to increase functionality.

公开(公告)号：US20160020770A1

公开(公告)日：2016-01-21

申请号：US14867981

申请日：2015-09-28

Applicant: Maxim Integrated Products, Inc.

Inventor： Arman Hematy ,  Martin Mason ,  Pierre Haubursin ,  Patrick Chan

IPC: H03K19/0175 ,  H03M1/66 ,  H03M1/12

CPC classification number: H03K19/017581 ,  H03M1/00 ,  H03M1/12 ,  H03M1/66

Abstract: Techniques are described for providing highly integrated and configurable IO ports for integrated circuits that can be individually configured for a variety of general purpose digital or analog functions, such as multiple channel analog-to-digital converters (ADC), multiple channel digital-to-analog converters (DAC), multiplexers, GPIOs, analog switches, switch and multiplexers, digital logic level translators, comparators, temperature sensors and relays, and so forth. The configurations of individual ports can be set by a configuration register that can, for instance, designate the function and voltage range of the port without impacting the other ports. In embodiments, logic mapping of a port order sequence can be defined. A data register can also be included for handling microcontroller commands and storing conversion results from, for instance, a port functioning as an ADC input port. These capabilities can be combined with its multi-range, high voltage and high current capability to increase functionality.

Abstract translation: 描述了为集成电路提供高度集成和可配置的IO端口的技术，该IO端口可以单独配置用于各种通用数字或模拟功能，如多通道模数转换器（ADC），多通道数模转换器 模拟转换器（DAC），多路复用器，GPIO，模拟开关，开关和多路复用器，数字逻辑电平转换器，比较器，温度传感器和继电器等。 各个端口的配置可以由配置寄存器设置，例如，可以指定端口的功能和电压范围而不影响其他端口。 在实施例中，可以定义端口顺序序列的逻辑映射。 还可以包括一个数据寄存器来处理微控制器命令，并存储来自例如作为ADC输入端口的端口的转换结果。 这些功能可以结合其多范围，高电压和高电流功能来增加功能。

公开(公告)号：US09148147B2

公开(公告)日：2015-09-29

申请号：US14190311

申请日：2014-02-26

Applicant: Maxim Integrated Products, Inc.

Inventor： Arman Hematy ,  Martin Mason ,  Pierre Haubursin ,  Patrick Chan

IPC: H01L25/00 ,  H03K19/0175 ,  H03M1/00

CPC classification number: H03K19/017581 ,  H03M1/00 ,  H03M1/12 ,  H03M1/66

Abstract: Techniques are described for providing highly integrated and configurable IO ports for integrated circuits that can be individually configured for a variety of general purpose digital or analog functions, such as multiple channel analog-to-digital converters (ADC), multiple channel digital-to-analog converters (DAC), multiplexers, GPIOs, analog switches, switch and multiplexers, digital logic level translators, comparators, temperature sensors and relays, and so forth. The configurations of individual ports can be set by a configuration register that can, for instance, designate the function and voltage range of the port without impacting the other ports. In embodiments, logic mapping of a port order sequence can be defined. A data register can also be included for handling microcontroller commands and storing conversion results from, for instance, a port functioning as an ADC input port. These capabilities can be combined with its multi-range, high voltage and high current capability to increase functionality.

Abstract translation: 描述了为集成电路提供高度集成和可配置的IO端口的技术，可针对各种通用数字或模拟功能进行单独配置，如多通道模数转换器（ADC），多通道数模转换器 模拟转换器（DAC），多路复用器，GPIO，模拟开关，开关和多路复用器，数字逻辑电平转换器，比较器，温度传感器和继电器等。 各个端口的配置可以由配置寄存器设置，例如，可以指定端口的功能和电压范围而不影响其他端口。 在实施例中，可以定义端口顺序序列的逻辑映射。 还可以包括一个数据寄存器来处理微控制器命令，并存储来自例如作为ADC输入端口的端口的转换结果。 这些功能可以结合其多范围，高电压和高电流功能来增加功能。