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Recent content by FreshmanNewbie

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    Question on Datasheet POR

    D002 - Can you please explain what this specification implies. Because the typical value is Vss. What I understand is that, POR will be released when VDD is > Vss. Which means, whenever VDD is > VSS, POR goes High and RESET is deasserted. In that case, What would be the voltage on the RESET pin?
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    Question on Datasheet POR

    Ok, so once the VDD supply reaches VDD = 1.8V, the RESET is released by the device? 1704425154 This line is not clear, "The on-chip POR circuit holds the device in Reset untilVDD has reached a high enough voltage to deactivatethe POR circuit". How does high enough imply? What voltage can be...
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    Question on Datasheet POR

    I would actually like to know what is the POR level for this IC. Suppose, my power supply VDD, is 3.3V. And if I turn off the supply, it takes time to reduce. Slowly, it comes to 3V, 2.5V, 2.2V, 1.2V ... and then 0V. What happens suppose, when the decreasing voltage is around, say 1.2V, and at...
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    Question on Datasheet POR

    In this datasheet, page 1, block diagram, why is the VDD connected to POR? 1. Why is the VDD connector to POR? 2. Is there POR for this IC? I couldn't find the value on the datasheet. I found the 1us - TABLE 2-1, page 24. Is this 1us POR? 3. Since POR block is connected to VDD? How should I...
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    Output voltage very low

    TP15 isn't connected to +3.3V. It is just a net name.
  6. F

    Output voltage very low

    As far as I calculated, when the input voltage divider, the Vcc input comes around 4.6V. 1702306565 But while testing, Vcc input is only 0.8V
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    Output voltage very low

    Thank you for the answer. But this doesn't seem to have an internal regulator as seen in Figures on page 2 of the datasheet. Also, so you mean to say, by giving the 12V input to this section, I have damaged the IC? Also, How is the feedback 10k affecting this Vcc input? (Actually, the RESET...
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    Output voltage very low

    Can you please tell me why the 143k in series is not helping? How alternate method will help? Where should I put the zener? 1702304688 Can you please tell me how does the IC not supposed to start-up with this 143k combination? Anyway, the input voltage should be available at the Vcc pin, right?
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    Output voltage very low

    I am not saying there is not 12V at pin 4. I am saying the 12V is there present at the top of the R102 resistor. But only 0.8V at the pin 4 of the IC. I am not calculating. I am testing the circuit in the test bench.
  10. F

    Output voltage very low

    I am not sure why pin 4 is having only 0.8V, when 12VDC is correct present. Any idea?
  11. F

    Output voltage very low

    1. Voltage at pin 4 = 0.8V 2. Voltage at pin 2 = 0V. It is a real circuit.
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    Output voltage very low

    This is the IC that I am using. I am getting 0V at the TP15, when +12VDC is given. Anyone can expplain why it is
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    Increase ADC input range

    Thank you for your answer. Just a couple of questions from your answer. 1. Can you please explain how increasing the top resistor value will make the ADC more prone to noise and slow down the response time? 2. What can be the value of the capacitor that I can place on the ADC input to...
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    Increase ADC input range

    Hi, This is the MCU. Vcc of MCU = 3.3V Port of the MCU is RB3 for the ADC Input. Can you please help with this information?
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    Increase ADC input range

    Below is a circuit I have. Initially, I have 2 100k resistors. And the node will be given to an ADC in an MCU. But since the ADC requirement was modified later, the bottom resistor was changed to 10k. But this increased the sleep current due to the low value resistor. Hence, can you please...

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