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SS1139LSPT bảng dữ liệu(PDF) 2 Page - SEC Electronics Inc. |
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2 / 6 page SS1139 Unipolar Hall-Effect Digital Switch 2 V3.10 Nov 1, 2013 General Description The SS1139 is a unipolar Hall-effect sensor IC fab- ricated from bipolar technology. The device inte- grates a voltage regulator, reverse battery protec- tion diode, Hall sensor with dynamic offset can- cellation system, temperature compensation cir- cuitry, small signal amplifier, Schmitt trigger and an open-collector output to sink up to 50 mA. With suitable output pull up, they can be used with bipolar or CMOS logic circuits. These Hall-effect switches are monolithic integrat- ed circuits with tighter magnetic specifications, de- signed to operate continuously over extended tem- peratures to +150°C,and are more stable with both temperature and supply voltage changes. Internal compensation characteristic makes the sensitivity increase slightly with temperature increasing, so that this IC is Particularly suitable to be used with the commonly low-cost magnets. If a magnetic flux density larger than threshold Bop, Output is turned on (low). When a magnetic flux density reversal falls below Brp, Output will be turned off (high). Thanks to its wide operating voltage range, ex- tended choice of temperature range and high relia- bility, it is quite suitable for use in automotive, in- dustrial and consumer applications. Glossary of Terms MilliTesla (mT), Gauss Units of magnetic flux density: 1mT = 10 Gauss RoHS Restriction of Hazardous Substances Operating Point (BOP) Magnetic flux density applied on the branded side of the package which turns the output driver ON (VOUT = VDSon) Release Point (BRP) Magnetic flux density applied on the branded side of the package which turns the output driver OFF (VOUT = high) |
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