magnetic encoder, em vote mấy con sau
AEAT-6600-T16
16bit
http://www.avagotech.com/pages/en/mo...aeat-6600-t16/
as5048a/b 14bit
http://ams.com/eng/Products/Position...ensors/AS5048A
AM4096 - 12 BIT ROTARY MAGNETIC ENCODER CHIP
http://www.rls.si/products/components/ic-am
b.r