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HAL300SO Datasheet(PDF) 2 Page - Micronas |
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HAL300SO Datasheet(HTML) 2 Page - Micronas |
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2 / 17 page  HAL300 2 Micronas Differential Hall Effect Sensor IC in CMOS technology Introduction The HAL 300 is a differential Hall switch produced in CMOS technology. The sensor includes 2 temperature- compensated Hall plates (2.05 mm apart) with active off- set compensation, a differential amplifier with a Schmitt trigger, and an open-drain output transistor (see Fig. 2). The HAL 300 is a differential sensor which responds to spatial differences of the magnetic field. The Hall volt- ages at the two Hall plates, S1 and S2, are amplified with a differential amplifier. The differential signal is compared with the actual switching level of the internal Schmitt trigger. Accordingly, the output transistor is switched on or off. The sensor has a bipolar switching behavior and re- quires positive and negative values of ∆B = BS1 – BS2 for correct operation. The HAL 300 is an ideal sensor for applications with a ro- tating multi-pole-ring in front of the branded side of the package (see Fig. 4 and Fig. 5), such as ignition timing, anti-lock brake systems, and revolution counting. For applications in which a magnet is mounted on the back side of the package (back-biased applications), the HAL 320 is recommended. The active offset compensation leads to constant mag- netic characteristics over supply voltage and tempera- ture. The sensor is designed for industrial and automotive ap- plications and operates with supply voltages from 4.5 V to 24 V in the ambient temperature range from –40 °C up to 150 °C. The HAL 300 is available in a SMD-package (SOT-89A) and in a leaded version (TO-92UA). Features: – distance between Hall plates: 2.05 mm – operates from 4.5 V to 24 V supply voltage – switching offset compensation at 62 kHz – overvoltage protection – reverse-voltage protection at VDD-pin – short-circuit protected open-drain output by thermal shutdown – operates with magnetic fields from DC to 10 kHz – output turns low with magnetic south pole on branded side of package and with a higher magnetic flux densi- ty in sensitive area S1 as in S2 – on-chip temperature compensation circuitry mini- mizes shifts of the magnetic parameters over temper- ature and supply voltage range – the decrease of magnetic flux density caused by rising temperature in the sensor system is compensated by a built-in negative temperature coefficient of hystere- sis – EMC corresponding to DIN 40839 Marking Code Type Temperature Range A E C HAL 300SO, HAL 300UA 300A 300E 300C Operating Junction Temperature Range (TJ) A: TJ = –40 °C to +170 °C E: TJ = –40 °C to +100 °C C: TJ = 0 °C to +100 °C The relationship between ambient temperature (TA) and junction temperature (TJ) is explained on page 11. Hall Sensor Package Codes Type: 300 HAL XXXPA-T Temperature Range: A, E, or C Package: SO for SOT-89A, UA for TO-92UA → Type: 300 → Package: TO-92UA → Temperature Range: TJ = –40 °C to +100 °C Example: HAL 300UA-E Hall sensors are available in a wide variety of packaging versions and quantities. For more detailed information, please refer to the brochure: “Ordering Codes for Hall Sensors”. |
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