MLX90251 Programmable Linear Hall Effect Sensor Datasheet 1. Features and Benefits 2. Application Examples Analog Signal Processing Linear Position Sensing Quad Switched Hall Plate Rotary Position Sensing Chopper Stabilized Amplifier Current Sensing Linear Analog Ratiometric Output Voltage Magnetic Field Measurement Programmable Output Quiescent Voltage (V ) OQ -100%V 200%V Range DD DD Programmable Magnetic Sensitivity Programmable Low Pass Filter Programmable Clamping Voltage Programmable Temperature Compensation Melexis ID Number Programmable Customer ID Number Lead-free package Ordering Information Product Code Temperature Code Package Code Option Code Packing Form Code MLX90251 E VA FAA-000 BU MLX90251 E VA FAA-100 BU MLX90251 E VA FAA-200 BU MLX90251 E VA FAA-300 BU MLX90251 L VA FAA-000 BU MLX90251 L VA FAA-100 BU MLX90251 L VA FAA-200 BU MLX90251 L VA FAA-300 BU Legend: Temperature Code: L for Temperature Range -40C to 150C E for Temperature Range -40C to 85C Package Code: VA for Plastic Single in Line thickness 1.1 -1.2mm Option Code: See section 10.4 Packing Form: BU for Bulk Ordering example: MLX90251LVA-FAA-000-BU REVISION 014 - NOVEMBER 2017 Page 1 3901090251 MLX90251 Programmable Linear Hall Effect Sensor Datasheet 3. Functional Diagram 4. General Description 1 The MLX90251 is a CMOS Programmable, Ratiometric Supply Linear Hall Effect sensor IC. The linear output voltage is proportional to the magnetic flux density. The OPA Filter ratiometric output voltage is proportional to the OPA OPA 4 supply voltage. The MLX90251 possesses active error correction circuitry, which virtually eliminates the 3 offset errors normally associated with analog Hall 2 Effect devices. All the parameters of the MLX90251 Program transfer characteristic are fully programmable. The decoder V (V B = 0 Gauss), the Sensitivity, the slope OQ OUT polarity, the Output Clamping levels, the thermal Shift Register Sensitivity drift, the internal bias point and a low-pass E E P R O M filter are all programmable in end-user applications. The MLX90251 has a very stable thermal Figure 1-1 Functional Diagram compensation for both the Sensitivity and the V over OQ a broad temperature range. For traceability purpose Pin Out the MLX90251 will carry a unique ID number programmed by Melexis and 24 bits of EEPROM VA package memory are allocated for a user programmed serial V 1 DD number. Test 2 V (Ground) 3 SS V 4 OUT Table 1: Pin out Table of Contents 1111.... FFFFeeeeaaaattttuuuurrrreeeessss aaaannnndddd BBBBeeeennnneeeeffffiiiittttssss ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 1111 2222.... AAAApppppppplllliiiiccccaaaattttiiiioooonnnn EEEExxxxaaaammmmpppplllleeeessss .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 1111 3333.... FFFFuuuunnnnccccttttiiiioooonnnnaaaallll DDDDiiiiaaaaggggrrrraaaammmm ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 2222 4444.... GGGGeeeennnneeeerrrraaaallll DDDDeeeessssccccrrrriiiippppttttiiiioooonnnn ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 2222 55.. GGlloossssaarryy ooff TTeerrmmss .............................................................................................................................................................................................................................................................. 44 55.. GGlloossssaarryy ooff TTeerrmmss .............................................................................................................................................................................................................................................................. 44 6666.... MMMMaaaaxxxxiiiimmmmuuuummmm RRRRaaaattttiiiinnnnggggssss ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 4444 7777.... DDDDeeeettttaaaaiiiilllleeeedddd BBBBlllloooocccckkkk DDDDiiiiaaaaggggrrrraaaammmm ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 5555 7.1. Detailed Description ........................................................................................................................ 5 8888.... GGGGeeeennnneeeerrrraaaallll EEEElllleeeeccccttttrrrriiiiccccaaaallll SSSSppppeeeecccciiiiffffiiiiccccaaaattttiiiioooonnnnssss .................................................................................................................................................................................................................................................................................................................................................................................................................................... 6666 9999.... PPPPrrrrooooggggrrrraaaammmmmmmmiiiinnnngggg RRRRaaaannnnggggeeee ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 7777 1100.. TTiimmiinngg SSppeecciiffiiccaattiioonnss ................................................................................................................................................................................................................................................ 77 1100.. TTiimmiinngg SSppeecciiffiiccaattiioonnss ................................................................................................................................................................................................................................................ 77 11111111.... AAAAccccccccuuuurrrraaaaccccyyyy .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 7777 11112222.... PPPPrrrrooooggggrrrraaaammmmmmmmaaaabbbblllleeee FFFFeeeeaaaattttuuuurrrreeeessss ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 8888 12.1. Output Quiescent Voltage (V ) ................................................................................................... 9 OQ 12.2. Thermal V Drift (DRIFT) .............................................................................................................. 9 OQ 12.3. Sensitivity, Rough Gain and Fine Gain .......................................................................................... 9 12.4. Sensitivity Range Selection .......................................................................................................... 10 12.5. Sensitivity Polarity (INVERT) ........................................................................................................ 13 REVISION 014 - NOVEMBER 2017 Page 2 3901090251 DAC DAC DAC DAC DAC DAC