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公开(公告)号:US5541551A
公开(公告)日:1996-07-30
申请号:US511085
申请日:1995-08-03
IPC分类号: G01R19/165 , G05F3/30 , G10H1/18 , G10H7/02 , H03K19/00 , H03K19/0175 , G05F1/10
摘要: A supply voltage detect circuit is described which generates a control signal indicating the status of VCC to be at 5.0 or 3.3 volts. This control signal is used to generate analog reference signals used by A/D and/or D/A circuitry in an audio processing integrated circuit and by other circuitry to control clock frequencies or current drive.
摘要翻译: 描述了一种电源电压检测电路,其生成指示VCC的状态为5.0或3.3伏的控制信号。 该控制信号用于产生由音频处理集成电路中的A / D和/或D / A电路使用的模拟参考信号,以及用于控制时钟频率或电流驱动的其它电路。