driven by E910.44 Hall sensor ic Features General Description ÿ Integrated Hall sensor with window comparator ÿ Supply voltage range 2.0 V to 6.0 V ÿ Digital output ÿ Threshold select input (+/-45 mT, +/-22.5 mT) ÿ Speed select input (5 kSamples/s, 10 kSamples/s) ÿ Current consumption ÿ<18 µA in low speed, high threshold mode ÿ<38 µA in high speed, low threshold mode ÿ Low supply detection ÿ Operating temperature range -40°C to +125°C ÿ TSSOP8 package This IC contains a Hall sensor and two high gain, chopper stabilized comparators forming a window comparator. It evaluates the magnetic field component perpendicular to the device surface. Three levels are indicated: beyond the positive threshold, around zero, and beyond the negative threshold. The result is indicated at two digital output pins. The fourth state that can be displayed is the low supply indication. The sample rate of 10kSamples/s enables fast movement detections. In order to achieve the very low average current consumption the IC performs pulsed measurement cycles. The outputs are latched with each update. Two digital input pins allow for configuration of threshold and speed according to the application needs. Applications ÿ Motor speed and postition control ÿ Magnetic field detection ÿ Proximity switch VDD VDD LOW BAT Supply ON Vint Vref + POS OUT1 _ Hall- Control Vref. + plate NEG OUT2 _ External control instance (e.g. µC) THRSH SPEED Autozero Clock Measure E910.44 ELMOS Semiconductor AG Info Sheet QM-No.: 25IS0027E.00 2009-09-03 ELMOS Semiconductor AG – Headquarters Heinrich-Hertz-Str. 1 | 44227 Dortmund | Germany Phone + 49 (0) 231 - 75 49 - 100 | Fax + 49 (0) 231 - 75 49 - 149 [email protected] | www.elmos.de Note ELMOS Semiconductor AG (below ELMOS) reserves the right to make changes to the product contained in this publication without notice. ELMOS assumes no responsibility for the use of any circuits described herein, conveys no licence under any patent or other right, and makes no representation that the circuits are free of patent infringement. While the information in this publication has been checked, no responsibility, however, is assumed for inaccuracies. ELMOS does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of a life-support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications. Copyright © 2009 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited.