KMZ10CM Linear Field Sensor

Transcription

1 Magnetoresisitve sensor technolog Linear signal output Over increased field range Ver low hsteresis High sensititvit Substitutes KMZ1C / NXP DESCRIPTION Due to its featured properties - high sensitivit and almost no hsteresis the KMZ1CM sensor is used in a wide range of applications, like magnetic field measurement, revolution counters, proximit detecting, and position measurement. FEATURES Wheatsone bridge Passive output signal Linear signal output proportional to magnetic field strength 4 lead package for measurement of z direction APPLICATIONS Detection of small magnetic fields, as in: Contactless switch Contactless displacement measurement Current measurement Polarit detection of small magnetic fields 1/5

2 PERFORMANCE SPECS Parameter Smbol Condition Min Tp Max Unit A. Operating Limits 1 max. suppl voltage V CC,max 1 V operating temperature T op C storage temperature T st C B. Sensor Specifications (T = 25 C ; H X = 3 ka/m suppl voltage V CC 5 1 V bridge resistance R b set voltage V OFF /V CC H x = mv/v sensitivit S note (mv/v/(ka/m hsteresis V HYST note µv/v linearit deviation FL note % C. Sensor Specifications (T low = 3 C ; T high = 8 C ; H X = 3 ka/m ; V CC = 5 V TC of sensitivit TCS note %/K TC of resistance TCBR note %/K TC of set TCV note 7,8, H x = µv/v/k 1 Stress above one or more of the limiting values ma cause permanent damage to the device. Exposure to limiting values for extended periods ma affect device reliabilit. 2 The sensitivit is defined as the average slope of characteristic between H= and 6 ka/m and Hx=3kA/m: V S 6kA/ m V 6* V CC 3 Hsteresis is defined as the difference between set voltages measured without H-field after premagnetization b negative and positive H=±6 ka/m field: ka ka VHYST V 1 H V 1 H; H ; H1 6 ; H X 3 ; VCC 5V m m 4 The linearit error is the deviation of output voltage measured at H=3 ka/m from the average of H= and 6 ka/moutput voltages, expressed as percentage of the output voltage difference measured between and 6 ka/m: FL 1 V 2 V 3kA/ m V 6kA/ m V *1% 5 The temperature coefficient of sensitivit is defined as the percentage change of the sensitivit per K referred to the value at T 1 = -25 C; T 2= operating temperature: TCS 1 S( T2 S( * *1% T S( 2 1 2/5

3 Vo [mv/v] KMZ1CM Linear Field Sensor 6 The temperature coefficient of resistance is defined as the percentage change of the resistance per K referred to the value at T 1 = -25 C; T 2= operating temperature: TCBR 7 Temperature coefficient of set voltage is defined as the voltage change per K expressed in µv/v: TCV V V T 8 Linear behaviour assumed 1 R( T2 R( * *1% T R( TYPICAL PERFORMANCE CURVES min -8 tp max -16 H [ka/m] Tpical output characteristic Sensitivit as a function of auxilliar field strength FUNCTION TERMINAL CONNECTIONS H sensitive direction Hx auxiliar field direction Pin Smbol Function 1 +Vo positive output voltage 2 GND negative suppl voltage 3 -Vo negative output voltage 4 +Vcc positive suppl voltage /5

4 BLOCK DIAGRAM ORDERING CODE Product Description Part number KMZ1CM KMZ1 CM Linear Field Sensor G-MRCO-28 4/5

5 TECHNICAL CONTACT INFORMATION CANADA Durham Instruments 9 McKa Road, Unit 3 Pickering, ON L1W 3X8 Tel: Fax: sales@disensors.com The information in this sheet has been carefull reviewed and is believed to be accurate; however, no responsibilit is assumed for inaccuracies. Furthermore, this information does not conve to the purchaser of such devices an license under the patent rights to the manufacturer. Measurement Specialties, Inc. reserves the right to make changes without further notice to an product herein. Measurement Specialties, Inc. makes no warrant, representation or guarantee regarding the suitabilit of its product for an particular purpose, nor does Measurement Specialties, Inc. assume an liabilit arising out of the application or use of an product or circuit and specificall disclaims an and all liabilit, including without limitation consequential or incidental damages. Tpical parameters can and do var in different applications. All operating parameters must be validated for each customer application b customer s technical experts. Measurement Specialties, Inc. does not conve an license under its patent rights nor the rights of others. 5/5