Hello,
I am having difficulty setting up a test circuit for the ADC0804LCN analog to digital converter. I have read the data sheet about 100 times and am trying to set up a test to show a simple digital conversion using 8 LEDs as described in the datasheet.
The problem I am experiencing is that when I apply a voltage to Vin, all of the LEDs light up simultaneously. Even a voltage of 0v still lights the LEDs very faintly. As I increase the voltage to Vin (max 5v) the LEDs all increase in brightness rather than just have some on and some off as I expected.
Can anyone suggest some ways to trouble shoot this? Is there a mistake that I am likely making (I'm pretty new to this so I assume there is)?
Thanks,
Ben
I am having difficulty setting up a test circuit for the ADC0804LCN analog to digital converter. I have read the data sheet about 100 times and am trying to set up a test to show a simple digital conversion using 8 LEDs as described in the datasheet.
The problem I am experiencing is that when I apply a voltage to Vin, all of the LEDs light up simultaneously. Even a voltage of 0v still lights the LEDs very faintly. As I increase the voltage to Vin (max 5v) the LEDs all increase in brightness rather than just have some on and some off as I expected.
Can anyone suggest some ways to trouble shoot this? Is there a mistake that I am likely making (I'm pretty new to this so I assume there is)?
Thanks,
Ben