发明授权
US06819163B1 Switched capacitor voltage reference circuits using transconductance circuit to generate reference voltage 失效
开关电容电压参考电路采用跨导电路产生参考电压

  • 专利标题: Switched capacitor voltage reference circuits using transconductance circuit to generate reference voltage
  • 专利标题(中): 开关电容电压参考电路采用跨导电路产生参考电压
  • 申请号: US10401082
    申请日: 2003-03-27
  • 公开(公告)号: US06819163B1
    公开(公告)日: 2004-11-16
  • 发明人: Bernard Robert Gregoire, Jr.
  • 申请人: Bernard Robert Gregoire, Jr.
  • 主分类号: G05F110
  • IPC分类号: G05F110
Switched capacitor voltage reference circuits using transconductance circuit to generate reference voltage
摘要:
A switched capacitor voltage reference circuit that has a transconductance circuit that receives the output of the amplifier, and then outputs a current that depends on its input voltage. This may be accomplished using a charge pump that is controlled by the amplifier output. The transconductance circuit provides a reference voltage at the output terminal of the switched capacitor generation circuit. A capacitor capacitively couples the output terminal of the switched capacitor circuit to the inverting terminal of the amplifier during the generation phase. By adjusting the capacitances of the various capacitors, the level and temperature dependence of the generated reference voltage may be controlled. Also, the charge pump often allows for reference voltages that are greater than the supply voltage.
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