SS490 Series MRL (Miniature RatiometricLinear) sensors have a ratiometric outputvoltage, set by the supply voltage. It variesin proportion to the strength of themagnetic field.A new Hall effect integrated circuit chipprovides increased temperature stabilityand sensitivity. Laser trimmed thin filmresistors on the chip provide high accuracy(null to ±3%, sensitivity up to ±3%)and temperature compensation to reducenull and gain shift over temperature.The quad Hall sensing element minimizesthe effects of mechanical or thermalstress on the output. The positive temperaturecoefficient of the sensitivity(+0.02%/°C typical) helps compensatefor the negative temperature coefficientsof low cost magnets, providing a robustdesign over a wide temperature range.
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