DATA SHEET CTSR420C-IS2

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1 Document Number Rev 0.4 Jan 5, 2015 Page 1

2 1. General description The Crocus CTSR400C series is a family of magnetic switches designed for sensing wide range of magnetic field. The advantage of the CTSR400C series includes high magnetic sensitivity, no bias current, low power consumption, flexible supply voltage, and low cost. The CTSR400C family of switches is composed of multiple magnetic tunnel junctions (MTJs) made of magnetic thin films. The MTJ cell is constructed of two magnetic layers separated by a thin insulating oxide layer. One of the two magnetic layers has a fixed magnetic orientation and it is called a reference layer. The other magnetic layer, called a sensing layer, has flexibility in changing orientation in the presence of magnetic field. The orientation of sensing layer can be changed by 180 degree which results in modulating resistance of MTJ cells. Consequently, the resistance of a sensor changes in the presence of magnetic field; the resistance depends on the relative magnetic orientations of a sensing layer to a fixed reference layer. When two magnetic layers have the same magnetic direction the resistance of sensor is low and the switch is ON. When they are in anti-parallel position the sensor resistance is high and the switch is OFF. Crocus has introduced multiple innovations around this basic principle in order to develop magnetic switch product line. Crocus Technology magnetic switch devices provide high sensitivity, high stability, as well as highly reliable performance over a wide range of operating temperatures up to 250 C. 2. Key Features & Benefits Key Features Flexible supply voltage Low current in µa range High sensitivity and high stability of the magnetic switching point High resistance to mechanical stress Low power High frequency performance Commercial & industrial temperature operating range Digital output signal Document Number Rev 0.4 Jan 5, 2015 Page 2

3 Benefits No bias current Low cost Small form factor Excellent thermal stability Multiple applications Sensing wide range of magnetic field Simple signal processing circuit (if needed) Magnetic and Electrical Specifications Parameter Description Min Typical Max Unit Supply voltage* 5 15 V Output resistance: OFF kω Output resistance: ON kω Max. current 1 ma Operating temperature C Operating point (B OP ) 5 mt Release point (B RP ) 0.5 mt Hysteresis (B HYS ) 4.5 mt Switching speed: ON 600 ns Switching speed: OFF 600 ns Max. exposed field 1 T Package SOT23 3x2.6 mm * note: this product also works with voltage supply of 1.2V and 3V Document Number Rev 0.4 Jan 5, 2015 Page 3

4 Unipolar Switch Output Signal Product Code R Single Resistor, H Differential Resistors, W Wheatstone Bridge, N Analog Output, D Digital Output Voltage Supply: U 1.2 V, V 3 V, C 5 V, T 12 V to 15 V Document Number Rev 0.4 Jan 5, 2015 Page 4

5 Equivalent Electrical Circuit Pin Configuration Pin Name Pin Number Note R + 1 R - 2 DNU 3 Do Not Use Package Information - SOT23 (3x2.6 mm) Package drawing Please see next page Document Number Rev 0.4 Jan 5, 2015 Page 5

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8 Sensitivity Direction Shipping & Handling Instruction Crocus CTSR400C products are electrostatic sensitive. Only antistatic, static dissipative and conductive packaging containers can be used. Filler materials used should be antistatic, noncorrosive, and should not crumble, fl ake, powder, shred or be of fi brous construction. Conductive packing materials are preferred during shipping. Under no circumstances should components be removed from their approved containers except at an ESD protected workstation Walsh Ave. Santa Clara, CA USA Phone : Fax: Place Robert Schuman Grenoble FRANCE Phone : +33 (0) Fax: +33 (0) Avenue Olivier Perroy Les Portes de Rousset Rousset Cedex FRANCE Phone: +33 (0) us at: info@crocus-technology.com visit us at: Crocus Technology All Rights Reserved Attention please: The information given in the present document shall in no event be regarded as a guarantee of conditions and characteristics. With respect to any hints and any values stated herein and/or any information regarding the application of the device, Crocus Technology hereby disclaims any and all warranties and liabilities of any kind, including without limitation warranties of non-infringement of intellectual property rights of any third party.