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AS5311
High Resolution Magnetic Linear Encoder
1 General Description
The AS5311 is a contactless high resolution magnetic linear encoder for accurate linear motion and off-axis rotary sensing with a resolution down to <0.5µm. It is a system-on-chip, combining integrated Hall elements, analog front end and digital signal processing on a single chip, packaged in a small 20-pin TSSOP package.
A multi-pole magnetic strip or ring with a pole length of 1.0mm is required to sense the rotational or linear motion. The magnetic strip is placed above the IC at a distance of typ. 0.3mm.
The absolute measurement provides instant indication of the magnet position within one pole pair with a resolution of 488nm per step (12bit over 2.0mm).
AS5311 Datasheet
