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    • 1. 发明公开
    • 전하 차감법을 적용한 디지털 아날로그 변환기
    • 数字到模拟转换器使用电荷分析方法
    • KR1020130052916A
    • 2013-05-23
    • KR1020110118255
    • 2011-11-14
    • 주식회사 실리콘웍스
    • 김지훈손영준나준호배정열
    • H03M1/66
    • H03M1/66H03M2201/61H03M2201/62H03M2201/8152H03M2201/932
    • PURPOSE: A digital analog converter which applies an electric charge subtraction method is provided to minimize errors of capacitors and relatively reduce a size of a decoder. CONSTITUTION: A control signal generating device(340) generates a switch control signal in response to digital data of N bits. A resistance string(310) comprises a first resistor array, a second resistor array, and a third resistor array which respectively divide multiple resistances which are connected between a reference voltage and a grounding voltage in series. A switch block(320) outputs a selection voltage by switching a part of voltage which is applied to any node of multiple serial resistances respectively included in the first resistor array, the second resistor array, and the third resistor array in response to the switch control signal. A conversion voltage generating block(330) generates a conversion voltage in response to a negative phase clock signal which is opposite to a positive phase clock signal.
    • 目的:提供一种应用电荷减法的数字模拟转换器,以最小化电容器的误差并相对减小解码器的尺寸。 构成:响应于N位的数字数据,控制信号产生装置(340)产生开关控制信号。 电阻串(310)包括分别分别连接在参考电压和接地电压之间的多个电阻的第一电阻器阵列,第二电阻器阵列和第三电阻器阵列。 开关块(320)响应于开关控制切换施加到分别包括在第一电阻器阵列,第二电阻器阵列和第三电阻器阵列中的多个串联电阻的任何节点的电压的一部分来输出选择电压 信号。 转换电压产生块(330)响应于与正相位时钟信号相反的负相位时钟信号产生转换电压。
    • 2. 发明公开
    • 전하 차감법 및 전하 전송 보간 방법이 적용된 디지털-아날로그 컨버터 회로
    • 使用电荷分析方法和电荷转移插值的数字模拟转换
    • KR1020110125345A
    • 2011-11-21
    • KR1020100044815
    • 2010-05-13
    • 주식회사 실리콘웍스
    • 김지훈손영준나준호배정열이상국
    • H03M1/66
    • H03M1/68H03M1/765H03M1/804
    • PURPOSE: A digital to analog converter circuit is provided to reduce the entire area of a digital to analog converter by reducing the number of resistance of a divider and the number of switches. CONSTITUTION: A resistance cell distributes voltage by each resistance divider. 2 bit 2-to-4 decoder groups(521,523a,523b,525a,525b) output voltage which corresponds by processing digital data divided in the resistance cell. Capacitor groups(531,533,535) are applied voltages(V1-V5) which are outputted from the 2 bit 2-to-4 decoder groups and execute electric charge by a charge subtraction method. The capacitor groups transfer electric charge by a charge transfer interpolation method. An operational amplifier(540) generates output voltage by receiving interpolation voltage corresponding to charge quantity which is transmitted from reference voltage and the capacitor group.
    • 目的:提供数模转换器电路,通过减少分频器的电阻数量和开关数量来减少数模转换器的整个面积。 构成:电阻单元通过每个电阻分压器分配电压。 2位2位至4位解码器组(521,523a,523b,525a,525b)输出电压,该电压对应于处理在电阻单元中划分的数字数据。 电容器组(531,533,535)是从2位2对4解码器组输出的施加电压(V1-V5),并通过电荷减法方法执行电荷。 电容器组通过电荷转移插值法传送电荷。 运算放大器(540)通过接收对应于从参考电压和电容器组发送的电荷量的内插电压来产生输出电压。