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SEGMENTED DIGITAL-TO-ANALOG CONVERTER HAVING WEIGHTED CURRENT SOURCES

机译:具有加权电流源的分段式数模转换器

摘要

A digital input to a digital-to-analog converter (DAC) is divided into a most significant portion and a lesser significant portion. At least one tap voltage generator generates a plurality of voltages, preferably using a resistor string. A decoder decodes at least one subword that forms the lesser significant portion to generate a corresponding at least one control signal. A switching unit accesses voltages generated by the at least one tap voltage generator in response to the at least one control signal. A scaled current generator generates a respective weighted current from each accessed voltage. An output stage combines all the weighted currents with a voltage that is an analog representation of the most significant portion of the digital input to generate an analog approximation of the entire digital input.
机译:数模转换器(DAC)的数字输入分为最高有效部分和较低有效部分。至少一个抽头电压发生器优选使用电阻器串产生多个电压。解码器解码形成较低有效部分的至少一个子字以产生对应的至少一个控制信号。开关单元响应于至少一个控制信号访问由至少一个抽头电压发生器产生的电压。缩放电流发生器根据每个访问的电压生成相应的加权电流。输出级将所有加权电流与电压组合在一起,该电压是数字输入最重要部分的模拟表示,以生成整个数字输入的模拟近似值。

著录项

  • 公开/公告号WO2013165976A3

    专利类型

  • 公开/公告日2013-12-27

    原文格式PDF

  • 申请/专利权人 ANALOG DEVICES TECHNOLOGY;

    申请/专利号WO2013US38806

  • 发明设计人 MEDINA SANCHEZ-CASTRO ITALO CARLOS;

    申请日2013-04-30

  • 分类号H03M1/66;

  • 国家 WO

  • 入库时间 2022-08-21 15:53:31

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