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发明授权
US08604821B2 Power supply voltage monitoring circuit and electronic circuit including the power supply voltage monitoring circuit 有权
电源电压监控电路和电子电路包括电源电压监控电路

Power supply voltage monitoring circuit and electronic circuit including the power supply voltage monitoring circuit
摘要：
Provided is a power supply voltage monitoring circuit (50) including: a signal output circuit (1) for outputting a signal voltage (Vsignal) which exhibits a saturation characteristic with respect to an increase in a power supply voltage (VDD); and a signal voltage monitoring circuit (4) for comparing the power supply voltage (VDD) with the signal voltage (Vsignal), and outputting a signal (Vout) indicating that the signal voltage (Vsignal) is normal when there is a predetermined voltage difference. With this configuration, a minimum operating power supply voltage may be reduced in an electronic circuit, and the power supply voltage may be used with efficiency.
摘要（中）：

提供一种电源电压监视电路（50），包括：信号输出电路（1），用于输出相对于电源电压（VDD）增加而呈现饱和特性的信号电压（Vsignal）; 以及用于将电源电压（VDD）与信号电压（Vsignal）进行比较的信号电压监视电路（4），并且当存在预定的电压差时，输出指示信号电压（Vsignal）为正常的信号（Vout） 。 利用这种配置，可以在电子电路中降低最小工作电源电压，并且可以有效地使用电源电压。

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