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| BUS IC DC/DC CONVERTER MOTOR DRIVER IC RIPPLE COUNTER DRIVER IC I/O IC SENSOR IC Co-integrated pressure sensor Tilt angle sensor y Hall sensor IC SENSOR INTERFACE IC y Hall sensor IC FEATURES y y y y y y y y y E910.44 DESCRIPTION The IC contains a Hall sensor and the appropriate measurement system. It detects three levels of upright magnetic field: positive, near zero and negative. These information are provided at two binary coded outputs for any logic or uC. The sampling rate is about 10kHz (typ.) allowing fast movement detection. In order to attain a very low average current consumption, the IC does short measurements and holds the result at the output until the next cycle. During the hold-phase, the IC switches to stand-by mode with very low power consumption. With two mode pins it is possible to bring th IC (statically) into a slow mode, reducing the current consumption furthermore. The second pin switches into a mode of increased sensitivity, where lower magnetic fields can be detected. PINNING Pin 1 2 3 4 5 6 7 8 Name VDD OUT1 OUT2 GND TST _ 1/GAIN TST _ 2 TST _ 3 SLOW Description Supply voltage Output: `0` -Field very positive or Low Bat `1'- Field not positive (-> near nil or negative) Output: `0` -Field very negative `1'- Field not positive (-> near nil or negative) Ground Sensitivity switching: connect to GND: normal sensitivity; connect to VDD: increased sensitivity; pin not to be left open in the application Connect to ground Connect to ground VDD OUT1 OUT2 GND 1 2 3 4 Supply voltage range 2.0V to 6.0V thresholds PACKAGE Hall Sensor with two magnetic switching Provides three field strength ranges: Two binary coded outputs for the recognised Extremely low integral current consumption High measuring rate of typically 10k samples Slow measuring mode and/ or increased - 40C to + 125C operating temperature sensitivity can be statically adjusted. per second in standard mode. of < 26A in standard mode. field strength negative, near zero and positive 8 7 6 5 SLOW TST_3 TST_2 TST_1/GAIN SO8 package Switching the trigger rate: connect to GND: normal trigger rate; connect to VDD: V triggerrate; pin not to be left open in the application APPLICATION y y y Magnetic field detection Proximity switch Motor speed and postition control BLOCK DIAGRAM VDD LOW BAT VDD supply ON Vint Vref + Hall- POS OUT1 _ Vref. ctrl. + _ NEG C OUT2 plate Autozero clock Measure MODE 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 (c) 2005 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited. www.elmos.de | sales@elmos.de 84 elmos product catalog june 2005 85 |
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