digital potentiometer
I was wondering about the AD5220.
http://www.parallax.com/Portals/0/Downloads/docs/prod/compshop/AD5220.pdf
I am having a hard time interpreting the datasheet whether or not this can be used as a current limiting resistor (between power and load) for around 9 v and 100mA. If it cannot be used this way, I saw another article that uses the variable resistance applied to a transistor that would then dim an LED.
Thanks
http://www.parallax.com/Portals/0/Downloads/docs/prod/compshop/AD5220.pdf
I am having a hard time interpreting the datasheet whether or not this can be used as a current limiting resistor (between power and load) for around 9 v and 100mA. If it cannot be used this way, I saw another article that uses the variable resistance applied to a transistor that would then dim an LED.
Thanks
Comments
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- Stephen
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- Stephen
http://www.analog.com/static/imported-files/data_sheets/AD5220.pdf
on the right side of the page under programming the variable resistor. bottom of paragraph one.
Care should be taken to limit
the current flow between W and B in the direct contact state to
a maximum value of 5 mA to avoid degradation or possible destruction
of the internal switch contact.