Comparator output sink current (open drain and pushpull output)

[demeanor]

hi,

can anyone tell me how to measure the output sink current of a comparator?

thanks...

 

[Joe G]

the max sink and source currents of the outputs will be listed in the data sheets for that device.

 

[demeanor]

yes, it is included on the data sheet however i am after the test set-up? its more of knowing how it is tested.. with that, i can check if varying the supply voltage will have an effect on the value of the output sink current..

 

[ChrisP58]

I doubt that there is any way of measuring that externally to the IC.

The manufacturers rated maximum current is probably a calculated value based on the power dissipation of the transistor and/or traces on the die.

 

[dr pepper]

You could get 100 devices and run them till they blow and work out an average, expensive way of doing it though.