xtr110 using with vp0808 mosfet

here some measurement reading using fluke 789 processmeter... what the strange is..i cant read the drain current ampere using regular multimeter..here the excel...and datasheet of my mosfet.... vp08008l...

my big problem is...where is my 20ma drain current when the input signal is at 10v.... thats why im given u this data..before this im have opened a thread...and it has been said my mosfet is faulty.i dont know whether its true or not..and i decided to buy it and now i got new one..which this type of mosfet will operate at +30v... pls advice VP0808-33638.pdf

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Hello,

Could you please share a schematic and PCB layout with your circuit connections shown?  The SPICE simulation file provides an ideal representation of the behavior of the XTR110.  If you've configured your circuit as shown in the SPICE model then it should behave the same.

I'm most concerned with your statement "I can't measure the output current with a regular multi-meter".  Are you using the connecting the meter in series with the output current?  Make sure you're using the "Current Input" terminals of the meter.  Have you checked the fuse to make sure it's not blown?

I'm not sure what you're reporting in the "Drive gate (V) followed by 1-10V daq" column.  Please explain.

1)im using the same schematic ur using,.and interpret on my breadboard........

2) ya.. i cant used it this multimeter..it is 400ma fused..so it should not have problem. ... and the reading at 10v input on daq is 2.5ma

3)with this multimeter i can have the current measure....but it shown 15ma at my multimeter.with 10v input signa|..to ensure my connection in serial to measure the current..here some drawing below

4) using this daq...i will regulate 0v-10v .. and i measure at the pin 14 xtr110...to make sure the pin 14 volt is below 2v

Hello,

What mode do you have the multimeter in when you're making measurements? 

That said, it looks like you're testing the XTR110 in an environment that is very susceptible to ESD damage.  The paper, plastic ruler, coffee mug and lack of ESD mat on your workspace may have resulted in damage to the device or other components in the system. 

I would suggest that you acquire new products, completely re-wire the circuit, and perform testing in an ESD safe environment. 

im using current.dont get wrong on my indicator set up on the multimeter..since the day one..i got this result .and no have esd damage sice the day one..ya im took some coffee..and have dilemma issue..this ic not cheap thou..if the ic is faulty..why the vref is precisely at 10v .also i had found an pdf that had an issue with this ic with ti reported it.not the outsider claimed it....plus....i found something weird on this ic....the output drain on mosfet had 15ma althought the vref is below 10v means that the ic is not in operation mode when i supply 5v power source besides 24.5v power supply,,  i dont want to buy the ic once more if it has same behavior from the first day i purchased it..its been 2 months already...