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A31316 Datasheet(PDF) 1 Page - Allegro MicroSystems |
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A31316 Datasheet(HTML) 1 Page - Allegro MicroSystems |
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1 / 61 page  TheA31316 is a robust 3D Hall-effect magnetic position sensor designed for on-axis and off-axis rotary as well as linear stroke position measurement in automotive, industrial, and consumer applications. This sensor integrates vertical and planar Hall-effect elements with precision temperature-compensation circuitry to detect two out of three magnetic field components (X, Y, and Z). Configurable signal processing, linearization, and angle calculation allows theA31316 to accurately resolve the absolute rotary (full 360° and short stroke <360°) or linear position of a moving magnetic target. The A31316 features PWM or SENT (SAE J2716) interface options to output the angle between the two factory-selected axes or the field form a single axis. In addition, the SENT interface provides the option to output the field measurement from both channels. On-chip EEPROM technology, capable of supporting up to 100 write cycles, is integrated for flexible programming of configuration and calibration parameters and includes bits provided for customer device identification purposes. The A31316 contains on-chip diagnostic features required for high reliability automotive applications, including monitors of both internal and external fault conditions. Developed in accordance with ISO 26262 as a hardware safety element out of context (SEooC) with ASIL B capability for use in automotive safety-related systems when integrated and used in the manner prescribed in the applicable safety manual and datasheet. A31316-DS, Rev. 2 MCO-0001314 • 3D magnetic sensor enables flexible mechanical integration for contactless linear and rotary position applications • Configurable signal path processing and on-chip angle calculation for accurate 360° and short stroke (<360°) rotary applications • Multiple programmable linearization options for maximum measurement accuracy: □ Piecewise-linear and binning modes □ Up to 33-point fixed position □ Up to 22-point programmable positions • PWM and SENT (SAE J2716) output formats • Integrated IC diagnostics for high reliability • Developed in accordance with ISO 26262 requirements for hardware product development for use in safety- critical applications targeting ASIL B compatibility (pending assessment) • Broken wire detection • 5 V operation with Undervoltage Detection (UVD) • Built-In Self-Test (BIST) Diagnostic Capability • Wide operating temperature range: –40°C to 150°C • In package passives remove the need for external support circuitry. 3D Magnetic Position Sensor IC A31316 FEATURES AND BENEFITS DESCRIPTION November 29, 2022 PACKAGE Not to scale Figure 1: 3-PIN SIP (Suffix UC) |
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