发明名称 |
MULTIPLYING ANALOG TO DIGITAL CONVERTER AND METHOD |
摘要 |
A multiplying analog to digital converter (ADC) including a successive-approximation-register (SAR) analog to digital converter (ADC) having a sample input and a feedback input and an ADC output configured with a feedback path configured to couple the ADC output to a digital to analog converter. A feedback attenuator is disposed in the feedback path, the feedback attenuator being configured to attenuate a feedback signal coupled to the feedback input, the feedback attenuator being configured to provide analog multiplication observed at the ADC output. A barrel shifter is configured to provide digital multiplication of the ADC output. The feedback attenuator may be configured as a divider network. The feedback attenuator may be configured to provide attenuation using only passive components. The feedback attenuator may be configured as a capacitive divider network. The feedback attenuator may be configured to provide attenuation ranging between 1 and 0.5. |
申请公布号 |
US2016248437(A1) |
申请公布日期 |
2016.08.25 |
申请号 |
US201615049752 |
申请日期 |
2016.02.22 |
申请人 |
Zhang Jintao;Wang Zhuo;Verma Naveen |
发明人 |
Zhang Jintao;Wang Zhuo;Verma Naveen |
分类号 |
H03M1/44 |
主分类号 |
H03M1/44 |
代理机构 |
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代理人 |
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主权项 |
1. A multiplying analog to digital converter comprising:
a successive-approximation-register (SAR) analog to digital converter (ADC) having a sample input and a feedback input and an ADC output configured with a feedback path configured to couple the ADC output to a digital to analog converter; a feedback attenuator disposed in the feedback path, the feedback attenuator being configured to attenuate a feedback signal coupled to the feedback input, the feedback attenuator being configured to provide analog multiplication observed at the ADC output; and a barrel shifter configured to provide digital multiplication of the ADC output. |
地址 |
Princeton NJ US |