High-accuracy Hall-effect Sensor ICs

  • 15-Jul-2013 07:44 EDT
S-57A1K1 (1).jpg

Seiko Instruments Inc.’s S-57A1/K1 series of Hall-effect sensor integrated circuits are suitable for demanding automotive applications that require high performance, reliability, accuracy, and magnetic sensitivity. The Hall-effect series includes two basic types of sensor: the unipolar (S-57A1), which is used to detect open/close conditions such as doors, seatbelts, CD/DVD players, and shift levers; and the bipolar (S-57K1), which is used to detect/measure rotation and direction such as electric power steering (EPS) motors, power windows, and windshield wipers. In addition to high performance and high accuracy, the S-57A1/K1 series offers a wide operating voltage range, with VDD = 3.5 to 26.0 V; wide operating temperature range of -40° to +125°C (-40° to +257°F); and high-speed operation, with tCYCLE = 16 µs (S-57A1) and 8 µs (S-57K1).

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