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Originally Posted by Kevin Sevcik
Al this sounds about right.... To combat this, what's the feasibility of fabricating/buying a fairly precise amp to spread the voltage range to 0-5V? Possibly greater if you're unlikely to be turning faster than 150deg/s.
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That is generally the only difference when you have a manufacturer that sells similar sensors with different output ranges: the measurement cell is usually the same and they just change an amplifier stage on their ASIC.
For a one-off application, this would be an okay thing to do if you need to really optimize your range and you can't buy an off-the-shelf part to fit your needs. For a mass production application, you wouldn't want to do this - not only from a cost standpoint, but the amplifier adds another error source and then it will probably become impossible to meet your performance objectives with the error stack up. For a one-off you're going to calibrate anyway so that shouldn't be an issue.
We asked the neighbors if we could block the road before we did it. We had the rack out for a couple of hours. They are getting used to us doing odd things during build season. - wendymom [more] 
06-04-2005, 13:32
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