SENSORS

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DESCRIPTION The SS400 Series sensor ICs are small, versatile, digital Halleffect devices that are operated by the magnetic field from a permanent magnet or an electromagnet, and are designed to respond to alternating North and South poles or to a South pole only. Bipolar, latching and unipolar magnetics are available. Band gap regulation provides stable operation over 3.8 Vdc to 30 Vdc supply voltage range. These sensors are capable of continuous 20 mA sinking output and may be cycled as high as 50 mA max. Its 3.8 V capability allows for use in many potential low voltage applications. The digital, open collector sinking-type output is easily interfaced with a wide variety of electronic circuits.
POTENTIAL APPLICATIONSTransportation:Speed and RPM (revolutions per minute) sensing Tachometer, counter pickupMotor and fan control Electric window liftConvertible roof positionIndustrial:Speed and RPM (revolutions per minute) sensingTachometer, counter pickupFlow-rate sensingBrushless dc (direct current) motor commutationMotor and fan controlRobotics controlMedical:Motor assembliesMedication dispensing control

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Digital Temperature Sensor and Thermal watchdog with Two-Wire Interface.The LM75 is a temperature sensor, Delta-Sigma analog-to-digital converter, and digital over-temperature detector with I2 C® interface. The host can query the LM75 at any time to read temperature. The open-drain Overtemperature Shutdown (O.S.) output becomes active when the temperature exceeds a programmable limit. This pin can operate in either “Comparator” or “Interrupt” mode.