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公开(公告)号：US09379731B1
公开(公告)日：2016-06-28
申请号：US14863200
申请日：2015-09-23
发明人： Masoud Roham , Mohammad Meysam Zargham , Li Lu
CPC分类号： H03M1/60 , G01K7/16 , H03K21/38 , H03M1/0612 , H03M1/0678 , H03M1/089
摘要： A device and method for analog to digital conversion is disclosed. The device can have a first amplifier operable to receive an input voltage and output a first control signal. The device can also have a first voltage-controlled oscillator (VCO) operably coupled to the first amplifier and configured to output a first signal based on the first control signal, the first signal having a sensor frequency. The device can also have a first switched-capacitor resistor operably coupled to the first VCO and to the first amplifier, the first switched-capacitor resistor configured to receive and be controlled by the sensor frequency. The device can also have a sensor counter operably coupled to the first VCO and configured produce a sensor count based on the sensor frequency. The device can also have a register configured provide a digital output proportional to the input voltage based on the sensor count.
摘要翻译： 公开了一种用于模数转换的装置和方法。 该装置可以具有可操作以接收输入电压并输出第一控制信号的第一放大器。 该器件还可以具有可操作地耦合到第一放大器并被配置为基于第一控制信号输出第一信号的第一压控振荡器（VCO），第一信号具有传感器频率。 该器件还可以具有可操作地耦合到第一VCO和第一放大器的第一开关电容器电阻器，第一开关电容器电阻器被配置为接收并由传感器频率控制。 该装置还可以具有可操作地耦合到第一VCO的传感器计数器，并且被配置产生基于传感器频率的传感器计数。 该器件还可以配置寄存器，提供与输入电压成比例的数字输出，该输入电压基于传感器计数。
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公开(公告)号：US11546004B2
公开(公告)日：2023-01-03
申请号：US17211769
申请日：2021-03-24
发明人： Meysam Azin , Li Lu , Anees Habib , Chinmaya Mishra , Damin Cao , Arul Balasubramaniyan , David Ta-hsiang Lin , Shuang Zhu , Dinesh Jagannath Alladi
摘要： Aspects of the disclosure relate to an apparatus for wireless communication. The apparatus may include a set of power detectors configured to generate a set of analog signals related to a set of output signal power levels of a set of transmit chains of a transmitter, respectively; an analog summer; a set of switching devices configured to send a selected one or more of the set of analog signals to the analog summer, and substantially isolated unselected one or more of the set of power detectors from the analog summer, wherein the analog summer is configured to generate a cumulative analog signal based on a sum of the selected one or more of the set of analog signals; an analog-to-digital converter (ADC) configured to generate a digital signal based on the cumulative analog signal; and a controller configured to control the set of switching devices.
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公开(公告)号：US10461762B1
公开(公告)日：2019-10-29
申请号：US16051686
申请日：2018-08-01
摘要： Methods and apparatuses for chopping a successive approximation register (SAR) analog-to-digital converter (ADC). The ADC generally includes a comparator comprising a first input and a second input; a switch connected between the first and second inputs of the comparator; a first capacitive array having a first terminal selectively coupled to the first input of the comparator; a second capacitive array having a first terminal selectively coupled to the second input of the comparator; and a reference buffer selectively coupled to second terminals of the first and second capacitive arrays and configured to apply inverse digital codes to the first and second capacitive arrays, wherein the switch is configured to short the first and second inputs of the comparator while the inverse digital codes are being applied to the first and second capacitive arrays such that charges of the first and second capacitive arrays are redistributed via the reference buffer.
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公开(公告)号：US20160252409A1
公开(公告)日：2016-09-01
申请号：US14634371
申请日：2015-02-27
发明人： Li Lu , Masoud Roham , Liang Dai , Anand Meruva
CPC分类号： G01K19/00 , G01K7/01 , G01K7/22 , G01K15/005 , G05F3/225
摘要： Systems and methods for sensing temperature on a chip are described herein. In one aspect, a temperature sensing system includes a sensing circuit with matching diode devices for providing corresponding diode voltages proportional to currents through the diode devices. The system also includes a digital code calculation unit for generating a plurality of digital code values based on first and second reference voltages and the diode voltages and a digital calibration engine configured for computing a calibrated temperature based on the plurality of digital codes. The system further includes a switching circuit for routing the diode voltages, during first and second times, to diode voltage input terminals of the digital code calculation unit.
摘要翻译： 本文描述了用于感测芯片上的温度的系统和方法。 在一个方面，温度感测系统包括具有匹配二极管器件的感测电路，用于提供与通过二极管器件的电流成比例的相应的二极管电压。 该系统还包括一个数字代码计算单元，用于基于第一和第二参考电压和二极管电压产生多个数字代码值，以及数字校准引擎，被配置为基于多个数字代码来计算校准温度。 该系统还包括用于在第一次和第二次期间将二极管电压布置到数字代码计算单元的二极管电压输入端的开关电路。
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公开(公告)号：US10044365B1
公开(公告)日：2018-08-07
申请号：US15843718
申请日：2017-12-15
发明人： Liang Dai , Kentaro Yamamoto , Omid Rajaee , Li Lu , Dinesh Alladi , Changsok Han
摘要： Certain aspects of the present disclosure provide apparatus and techniques for analog-to-digital conversion using a time-to-digital converter (TDC). For example, certain aspects provide a quantizer using a TDC. The quantizer may include at least one first capacitive element and a set of switches configured to selectively couple a first terminal and a second terminal of the at least one first capacitive element to at least one input voltage source. The TDC may also include a reference voltage source, at least one switch coupled between the second terminal of the at least one first capacitive element and an output of the reference voltage source, a current source selectively coupled to the first terminal of the at least one first capacitive element, and a voltage sense circuit coupled to the first terminal of the at least one first capacitive element.
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