发明名称 |
Successive approximation register analog-to-digital converter and method of operating built-in self-test device for testing the converter |
摘要 |
Provided is a successive approximation register analog-to-digital converter (SAR ADC) including a digital-to-analog converter (DAC) generating and outputting first and second level voltages based on first and second analog input signals and a reference voltage signal; a comparator comparing the first and second level voltages and outputting a comparison signal according to a comparison result; and an SAR logic generating a digital signal based on the comparison signal, wherein the DAC includes: first and second input switches controlling reception of the first and second analog input signals, respectively; a first discharge switch connected electrically to the first input switch, the first discharge switch discharging leakage current according to an operation of the first input switch; and a second discharge switch connected electrically to the second input switch, the second discharge switch discharging leakage current according to an operation of the second input switch. |
申请公布号 |
US8933830(B1) |
申请公布日期 |
2015.01.13 |
申请号 |
US201414178187 |
申请日期 |
2014.02.11 |
申请人 |
Electronics and Telecommunications Research Institute |
发明人 |
Jeon Young-deuk |
分类号 |
H03M1/00;H03M1/10;H03M1/12 |
主分类号 |
H03M1/00 |
代理机构 |
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代理人 |
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主权项 |
1. A successive approximation register analog-to-digital converter (SAR ADC) comprising:
a digital-to-analog converter (DAC) generating and outputting first and second level voltages based on first and second analog input signals and a reference voltage signal; a comparator comparing the first and second level voltages and outputting a comparison signal according to a comparison result; and an SAR logic generating a digital signal based on the comparison signal, wherein the DAC comprises: first and second input switches controlling reception of the first and second analog input signals, respectively; a first discharge switch connected electrically to the first input switch, the first discharge switch discharging leakage current according to an operation of the first input switch; and a second discharge switch connected electrically to the second input switch, the second discharge switch discharging leakage current according to an operation of the second input switch. |
地址 |
Daejeon KR |