Editing Hall effect sensor (section)

=== Integrated digital electronics ===
Hall sensors ICs often integrate digital electronics.<ref>{{cite web |title=Hall Effect Sensor Voltage Regulation and Power Management |url=http://phareselectronics.com/products/hall-effect-sensors/voltage-regulation-and-power-management/ |website=phareselectronics.com |access-date=26 May 2015 |archive-date=29 May 2015 |archive-url=https://web.archive.org/web/20150529055232/http://phareselectronics.com/products/hall-effect-sensors/voltage-regulation-and-power-management/ |url-status=dead }}</ref> This enables advanced corrections to the sensor characteristics (e.g. temperature-coefficient corrections), [[digital communication]] to microprocessor systems, and may provide interfaces for input diagnostics, fault protection for transient conditions, and short/open-circuit detection.

Some Hall sensor ICs include [[digital signal processing|DSP]], which can allow more processing techniques directly within the sensor package.<ref name="ramsden" />{{rp|167}}

Some Hall sensor ICs integrate an [[analog-to-digital converter]] and [[I2C|I<sup>2</sup>C]] (Inter-integrated circuit communication protocol) IC for direct connection to a [[microcontroller]]'s I/O port.<ref>{{cite web|url=https://www.mouser.com/c/sensors/magnetic-sensors/?q=I2C|title=I2C Board Mount Hall Effect/Magnetic Sensors (or any other part distributor search for "I2C" and "Hall sensor")|publisher=Mouser Electronics|website=www.mouser.com|access-date=11 April 2025}}</ref>

The [[ESP32]] [[microcontroller]] even has an integrated Hall sensor which hypothetically could be read by the microcontroller's internal [[analog-to-digital converter]], though it does not work.<ref>[https://www.espressif.com/sites/default/files/documentation/esp32_technical_reference_manual_en.pdf ESP32Technical Reference Manual] V4.9 2023 revision history removed mention of the sensor. [https://www.espressif.com/sites/default/files/pcn_downloads/PCN20221202%20Remove%20Hall%20Sensor%20from%20ESP32%20Series%20of%20Documentation.pdf PCN20221202] gives the following reason for removal: "In the documentation for ESP32 series of products, hall sensor is listed as one of the supported peripherals. However, the hall sensor on ESP32 does not work properly. Therefore, all references to hall sensor in ESP32 documentation need to be removed." </ref>