How do you calculate the offset voltage of hmc1052

#1 (**permalink**) 12-10-2005, 03:17 AM

I need help to calculate the offset voltage of HMC1052. It is confused
from the data sheet. Is offset equal to (max-min)/2 or when you read
the output voltage during the SET/RESET pulse?

Thanks,
John.

#2 (**permalink**) 12-10-2005, 05:07 PM

eeaj2002 wrote...

Quote:

I need help to calculate the offset voltage of HMC1052. It is confused
from the data sheet. Is offset equal to (max-min)/2 or when you read
the output voltage during the SET/RESET pulse?

The datasheet says: "Offset = (OUT+) – (OUT-), Field = 0 gauss after
Set pulse" and later it says, "Typically a reset pulse is sent first,
followed by a set pulse a few milliseconds later. By shoving the
magnetic domains in completely opposite directions, any prior magnetic
disturbances are likely to be completely erased by the duet of pulses."
So it appears to be the zero-field output measured _after_ a reset/set.

--
Thanks,
- Win

#3 (**permalink**) 12-10-2005, 11:47 PM

Hi Win,

Thank you for your response to my post. What I am confuse, if in
overall calculating the arctan(y/x), the Offset = (OUT+) - (OUT-)
would play any role or not. I've read several posting and seen mostly
the x and mainly related to Xoff , Yoff, Xmax,Ymax, Xmin, Ymin, Xsf and
Ysf are related to the arctan(y/x).

High regards,
John.