Trunctuating/filtering sensoring output..

markaeric

Hello all!


I'm working with the Avago AEAT-6010 10-bit magnetic absolute position sensor www.avagotech.com/pages/en/motion_control_encoder_products/magnetic_encoders/aeat-6010/

I don't quite need the full resolution provided by 10-bits (.35 degree steps), and at any rate, there is an error +/-1 LSB. Is there a better way of reducing resolution to say 9-bit than simply trunctuating the LSB? Would removing the LSB be giving me 512 instead of 1024 steps per revolution, or is my logic flawed? Should I perhaps average the last two bits instead?

Thanks,
Mark

kwinn

Truncating the lsb's is usually done if the full resolution is not required. I have an application where 10 bits are required but use the 10 msb's of a 12 bit ADC because they are easier to source and generally cost less than the 10 bit units. It also reduces the number of parts I need to stock.

And, yes you would get a resolution of 512 steps instead of 1024 if you ignore the lsb.

markaeric

Thanks for the quick response!