AD7895 BUSY信号问题

您好:目前在调试AD7895-10,发现BUSY信号在一上电就为高电平,并且不随启动转换信号变化,即一直为转换状态,请大侠指点。

  • 0
    •  Analog Employees 
    •  Super User 
    on Jul 23, 2013 10:30 AM

    您好,请首先检查您的硬件电路是否正确?供电、参考、以及BUSY, CONVST引脚是否都完好?在上电后,SCLK是什么状态?如果方便,也可以将您的原理图贴出来。

    This falling edge of CONVST also causes the BUSY signal to go high to indicate that a conversion is taking place.

    The BUSY signal goes low when the conversion is complete, which is 3.8 µs max after the falling edge of CONVST, and new data from this conversion is available in the output register of the AD7895.