Editing Hall effect sensor (section)

=== Dual Hall sensor ICs ===
Some ICs include two Hall elements. This is useful for counting a series of increments (an [[incremental encoder]]) to make a [[Linear encoder|linear]] or [[rotary encoder]], whereby a moving or rotating arrangement of magnets produces an alternating magnetic pattern sensed as a [[quadrature encoder|quadrature encoded]] pattern.<ref name=":0" /> That pattern can then be decoded to provide both the speed and direction of movement or simply counted up and down to determine the position or angle. (When only one Hall element is used, the direction of linear or rotary encoders cannot be determined). The two elements placed at a precise distance apart from each other on the [[Die (integrated circuit)|die]] may either be oriented in the same direction,<ref>{{Cite web |title=Dual Hall-effect latch IC with speed and direction - Medium sensitivity |url=https://www.melexis.com/en/product/MLX92251/Dual-Hall-Effect-Latch-Speed-Direction |access-date=2023-12-28 |website=Melexis |language=en}}</ref> in which case the magnetic pole-to-pole pitch should ideally be two times the Hall element-to-element pitch.<ref name=":0" /> Alternatively, the Hall elements may be oriented at 90 degrees to provide sensing in two axes.<ref>{{Cite web |title=Dual Hall-Effect Latches {{!}} Allegro MicroSystems |url=https://www.allegromicro.com/en/products/sense/switches-and-latches/dual-hall-effect-latches |access-date=2023-12-28 |website=www.allegromicro.com}}</ref><ref>{{cite web|url=https://www.ti.com/lit/ds/symlink/tmag5111.pdf|title=TMAG511x 2D, Dual-Channel, High Sensitivity, Hall-Effect Latch|publisher=Texas Instruments|website=www.ti.com|date=June 2022|archive-url=https://web.archive.org/web/20240801232011/https://www.ti.com/lit/ds/symlink/tmag5111.pdf|archive-date=1 August 2024|url-status=live}}</ref>