KMZ43T Magnetic field sensor Rev. 05 — 4 March 2009 Product data sheet 1. Product profile 1.1 General description The KMZ43T is a sensitive magnetic field sensor, employing the magnetoresistive effect of thin-film permalloy. The sensor contains two galvanic separated Wheatstone bridges, at a relative angle of 45° to one another. A rotating magnetic field in the x-y plane will produce two independent sinusoidal output signals, one a function of +cos(2α) and the second a function of +sin(2α), α being the angle between sensor and field direction (see Figure 2). The KMZ43T is suited to high precision angle measurement applications under low field conditions (saturation field strength 25 kA/m). The sensor can be operated at any frequency between 0 Hz and 1 MHz. 1.2 Features n n n n n Accurate and reliable angle measurement Mechanical robustness, contactless principle Wear-free operation Accuracy independent of mechanical tolerances Extended temperature range 1.3 Applications n Steering angle and torsion n Headlight adjustment n Motor positioning n Window wipers n Fuel level n Mirror positioning 1.4 Quick reference data Table 1. Quick reference data Tamb = 25 °C and Hext = 25 kA/m; VCC = 5 V; unless otherwise specified. Symbol Parameter Min Typ Max Unit VCC supply voltage [1] - 5 9 V peak output voltage see Figure 2 [1] 60 67 75 mV per supply voltage; see Figure 2 [1] −2 - +2 mV/V 2.7 3.2 3.7 kΩ Vpeak Voffset offset voltage Rbridge bridge resistance Conditions [1][2] [1] Applicable for bridge 1 and bridge 2. [2] Bridge resistance between pin 4 to pin 8, pin 3 to pin 7, pin 1 to pin 5 and pin 2 to pin 6. KMZ43T NXP Semiconductors Magnetic field sensor 2. Pinning information Table 2. Pinning Pin Symbol Description Simplified outline 1 ON1 output voltage bridge 1 2 ON2 output voltage bridge 2 3 VCC2 supply voltage bridge 2 4 VCC1 supply voltage bridge 1 5 OP1 output voltage bridge 1 6 OP2 output voltage bridge 2 7 GND2 ground 2 8 GND1 ground 1 8 5 1 4 3. Ordering information Table 3. Ordering information Type number KMZ43T Package Name Description Version SO8 SOT96-1 plastic small outline package; 8 leads; body width 3.9 mm 4. Circuit diagram KMZ43T bridge 1 bridge 2 cos R11 R13 VCC1 OP1 VCC1 sin R21 R12 R14 R23 GND1 ON1 OP2 R22 R24 GND2 VO1 VO2 V V VOP1 V VON1 V VOP2 V ON2 VCC2 VON2 VCC2 V 008aaa100 Fig 1. Device and test circuit diagram KMZ43T_5 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 05 — 4 March 2009 2 of 8 KMZ43T NXP Semiconductors Magnetic field sensor 5. Limiting values Table 4. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol Parameter Conditions [1] Min Max Unit - 9 V kA/m VCC supply voltage Hext external magnetic field strength 25 - Tamb ambient temperature −40 +150 °C Tstg storage temperature −65 +150 °C [1] Applicable for bridge 1 and bridge 2. 6. Thermal characteristics Table 5. Thermal characteristics Symbol Parameter Rth(j-a) thermal resistance from junction to ambient KMZ43T_5 Product data sheet Conditions Typ Unit 155 K/W © NXP B.V. 2009. All rights reserved. Rev. 05 — 4 March 2009 3 of 8 KMZ43T NXP Semiconductors Magnetic field sensor 7. Characteristics Table 6. Characteristics Tamb = 25 °C and Hext = 25 kA/m; VCC = 5 V; unless otherwise specified. Symbol Min Typ Max Unit supply voltage [1] - 5 9 V Vpeak peak output voltage [1] 60 67 75 mV TCVpeak temperature coefficient of peak Tamb = −40 °C to +150 °C output voltage [1][2] −0.3 −0.36 −0.42 %/K Rbridge bridge resistance [1][3] 2.7 3.2 3.7 kΩ [1][4] 0.24 0.26 0.29 %/K [1] −2 - +2 mV/V VCC Parameter Conditions see Figure 2 TCRbridge temperature coefficient of bridge resistance Tamb = −40 °C to +150 °C Voffset offset voltage per supply voltage; see Figure 2 TCVoffset temperature coefficient of offset voltage per supply voltage; Tamb = −40 °C to +150 °C; see Figure 2 [1][5] −4 - +4 (µV/V)/K FH hysteresis of output voltage see Figure 3 [1][6] 0 0.05 0.18 %FS k amplitude synchronism TCk temperature coefficient of amplitude synchronism ∆α angular inaccuracy Tamb = −40 °C to +150 °C [7] 99.5 100 100.5 % [8] −0.01 - +0.01 %/K [9] 0 0.05 0.1 deg [1] Applicable for bridge 1 and bridge 2. [2] V peak ( at 150 °C ) – V peak ( at – 40 °C ) TC Vpeak = 100 × ---------------------------------------------------------------------------------------------------V peak ( at 25 °C ) × ( 150 °C – ( – 40 °C ) ) [3] Bridge resistance between pin 4 to pin 8, pin 3 to pin 7, pin 1 to pin 5 and pin 2 to pin 6. [4] R bridge ( at 150 °C ) – R bridge ( at – 40 °C ) TC Rbridge = 100 × -------------------------------------------------------------------------------------------------------R bridge ( at 25 °C ) × ( 150 °C – ( – 40 °C ) ) [5] V offset ( at 150 °C ) – V offset ( at – 40 °C ) TC Voffset = --------------------------------------------------------------------------------------------------150 °C – ( – 40 °C ) [6] V O1 ( 67.5° )135°→45° – V O1 ( 67.5° )45°→135° FH 1 = 100 × ----------------------------------------------------------------------------------------------------------------------2 × V peak1 V O2 ( 22.5° )90°→0° – V O2 ( 22.5° )0°→90° F H 2 = 100 × ----------------------------------------------------------------------------------------------------------2 × V peak2 [7] V peak1 k = 100 × ----------------V peak2 [8] k ( at 150 °C ) – k ( at – 40 °C ) TC k = 100 × ---------------------------------------------------------------------------------------k ( at 25 °C ) × ( 150 °C – ( – 40 °C ) ) [9] ∆α = α real – α meas ; Voffset = 0 V; inaccuracy of angular measurement due to deviations from ideal sinusoidal characteristics, calculated from the third and fifth harmonics of the spectrum VO. KMZ43T_5 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 05 — 4 March 2009 4 of 8 KMZ43T NXP Semiconductors Magnetic field sensor VO (mV) α = 0° VO2 direction of magnetic field α Vpeak2 Voffset2 ON1 GND1 ON2 GND2 0 VCC2 OP2 VCC1 OP1 VO1 mgu175 0 Fig 2. 90 270 180 α (deg) 360 Output signals related to the direction of the magnetic field 006aaa530 VO (mV) FH2 FH1 VO1 0 0 Fig 3. 45 90 α (deg) 135 Definition of hysteresis KMZ43T_5 Product data sheet VO2 © NXP B.V. 2009. All rights reserved. Rev. 05 — 4 March 2009 5 of 8 KMZ43T NXP Semiconductors Magnetic field sensor 8. Package outline 5.0 4.8 1.75 1.0 0.4 6.2 5.8 4.0 3.8 pin 1 index 1.27 0.49 0.36 0.25 0.19 Dimensions in mm Fig 4. 03-02-18 Minimized package outline SOT96-1 9. Revision history Table 7. Revision history Document ID Release date Data sheet status Change notice Supersedes KMZ43T_5 20090304 Product data sheet - KMZ43T_4 Modifications: • Table 6: TCVpeak and TCRbridge values adapted to 25 °C reference point KMZ43T_4 20080326 Product data sheet - KMZ43T_3 KMZ43T_3 20030915 Product specification - KMZ43T_2 KMZ43T_2 20030326 Preliminary specification - KMZ43_1 KMZ43_1 20000824 Objective specification - - KMZ43T_5 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 05 — 4 March 2009 6 of 8 KMZ43T NXP Semiconductors Magnetic field sensor 10. Legal information 10.1 Data sheet status Document status[1][2] Product status[3] Definition Objective [short] data sheet Development This document contains data from the objective specification for product development. Preliminary [short] data sheet Qualification This document contains data from the preliminary specification. Product [short] data sheet Production This document contains the product specification. [1] Please consult the most recently issued document before initiating or completing a design. [2] The term ‘short data sheet’ is explained in section “Definitions”. [3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status information is available on the Internet at URL http://www.nxp.com. 10.2 Definitions Draft — The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions. NXP Semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. Short data sheet — A short data sheet is an extract from a full data sheet with the same product type number(s) and title. A short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. For detailed and full information see the relevant full data sheet, which is available on request via the local NXP Semiconductors sales office. In case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail. 10.3 Disclaimers General — Information in this document is believed to be accurate and reliable. However, NXP Semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. Right to make changes — NXP Semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof. Suitability for use — NXP Semiconductors products are not designed, authorized or warranted to be suitable for use in medical, military, aircraft, space or life support equipment, nor in applications where failure or malfunction of an NXP Semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage. NXP Semiconductors accepts no liability for inclusion and/or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and/or use is at the customer’s own risk. Applications — Applications that are described herein for any of these products are for illustrative purposes only. NXP Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Limiting values — Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) may cause permanent damage to the device. Limiting values are stress ratings only and operation of the device at these or any other conditions above those given in the Characteristics sections of this document is not implied. Exposure to limiting values for extended periods may affect device reliability. Terms and conditions of sale — NXP Semiconductors products are sold subject to the general terms and conditions of commercial sale, as published at http://www.nxp.com/profile/terms, including those pertaining to warranty, intellectual property rights infringement and limitation of liability, unless explicitly otherwise agreed to in writing by NXP Semiconductors. In case of any inconsistency or conflict between information in this document and such terms and conditions, the latter will prevail. No offer to sell or license — Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights. Quick reference data — The Quick reference data is an extract of the product data given in the Limiting values and Characteristics sections of this document, and as such is not complete, exhaustive or legally binding. 10.4 Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. 11. Contact information For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: [email protected] KMZ43T_5 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 05 — 4 March 2009 7 of 8 KMZ43T NXP Semiconductors Magnetic field sensor 12. Contents 1 1.1 1.2 1.3 1.4 2 3 4 5 6 7 8 9 10 10.1 10.2 10.3 10.4 11 12 Product profile . . . . . . . . . . . . . . . . . . . . . . . . . . General description. . . . . . . . . . . . . . . . . . . . . . Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . Quick reference data. . . . . . . . . . . . . . . . . . . . . Pinning information . . . . . . . . . . . . . . . . . . . . . . Ordering information . . . . . . . . . . . . . . . . . . . . . Circuit diagram. . . . . . . . . . . . . . . . . . . . . . . . . . Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . Thermal characteristics. . . . . . . . . . . . . . . . . . . Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . Package outline . . . . . . . . . . . . . . . . . . . . . . . . . Revision history . . . . . . . . . . . . . . . . . . . . . . . . . Legal information. . . . . . . . . . . . . . . . . . . . . . . . Data sheet status . . . . . . . . . . . . . . . . . . . . . . . Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . . Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contact information. . . . . . . . . . . . . . . . . . . . . . Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 1 1 1 2 2 2 3 3 4 6 6 7 7 7 7 7 7 8 Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © NXP B.V. 2009. All rights reserved. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: [email protected] Date of release: 4 March 2009 Document identifier: KMZ43T_5