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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(2) and the second a function of +sin(2), 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
I I I I I Accurate and reliable angle measurement Mechanical robustness, contactless principle Wear-free operation Accuracy independent of mechanical tolerances Extended temperature range
1.3 Applications
I Steering angle and torsion I Headlight adjustment I Motor positioning I Window wipers I Fuel level I 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 VCC Vpeak Voffset Rbridge
[1] [2]
Parameter supply voltage peak output voltage offset voltage bridge resistance
Conditions
[1]
Min 60 -2 2.7
[1] [1]
Typ 5 67 3.2
Max 9 75 +2 3.7
Unit V mV mV/V k
see Figure 2 per supply voltage; see Figure 2
[1][2]
Applicable for bridge 1 and bridge 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.
NXP Semiconductors
KMZ43T
Magnetic field sensor
2. Pinning information
Table 2. Pin 1 2 3 4 5 6 7 8 ON1 ON2 VCC2 VCC1 OP1 OP2 GND2 GND1 Pinning Description output voltage bridge 1 output voltage bridge 2 supply voltage bridge 2 supply voltage bridge 1 output voltage bridge 1 output voltage bridge 2 ground 2 ground 1
1 4 8 5
Symbol
Simplified outline
3. Ordering information
Table 3. Ordering information Package Name Description KMZ43T SO8 plastic small outline package; 8 leads; body width 3.9 mm Version SOT96-1 Type number
4. Circuit diagram
KMZ43T
R11
bridge 1
bridge 2
cos
R12
R21
sin
R22
R13
R14
R23
R24
VCC1
OP1
GND1 VO1 V
ON1
OP2
GND2 VO2 V
ON2
VCC2
VCC1 V
VOP1
VON1 V V
VOP2 V
VON2
VCC2
008aaa100
Fig 1.
Device and test circuit diagram
KMZ43T_5
(c) NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 -- 4 March 2009
2 of 8
NXP Semiconductors
KMZ43T
Magnetic field sensor
5. Limiting values
Table 4. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol VCC Hext Tamb Tstg
[1]
Parameter supply voltage external magnetic field strength ambient temperature storage temperature
Conditions
[1]
Min 25 -40 -65
Max 9 -
Unit V kA/m
+150 C +150 C
Applicable for bridge 1 and bridge 2.
6. Thermal characteristics
Table 5. Symbol Rth(j-a) Thermal characteristics Parameter thermal resistance from junction to ambient Conditions Typ 155 Unit K/W
KMZ43T_5
(c) NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 -- 4 March 2009
3 of 8
NXP Semiconductors
KMZ43T
Magnetic field sensor
7. Characteristics
Table 6. Characteristics Tamb = 25 C and Hext = 25 kA/m; VCC = 5 V; unless otherwise specified. Symbol VCC Vpeak TCVpeak Rbridge TCRbridge Voffset TCVoffset Parameter supply voltage peak output voltage see Figure 2 temperature coefficient of peak Tamb = -40 C to +150 C output voltage bridge resistance temperature coefficient of bridge resistance offset voltage temperature coefficient of offset voltage hysteresis of output voltage amplitude synchronism temperature coefficient of amplitude synchronism angular inaccuracy
Applicable for bridge 1 and bridge 2.
Conditions
[1] [1] [1][2]
Min 60 -0.3 2.7 0.24 -2 -4
Typ 5 67 -0.36 3.2 0.26 -
Max 9 75 -0.42 3.7 0.29 +2 +4
Unit V mV %/K k %/K mV/V (V/V)/K
[1][3]
Tamb = -40 C to +150 C per supply voltage; see Figure 2 per supply voltage; Tamb = -40 C to +150 C; see Figure 2 see Figure 3 Tamb = -40 C to +150 C
[1][4]
[1]
[1][5]
FH k TCk
[1] [2] [3] [4]
[1][6] [7] [8]
0 99.5 -0.01 0
0.05 100 0.05
0.18 100.5 +0.01 0.1
%FS % %/K deg
[9]
V peak ( at 150 C ) - V peak ( at - 40 C ) TC Vpeak = 100 x --------------------------------------------------------------------------------------------------V peak ( at 25 C ) x ( 150 C - ( - 40 C ) )
Bridge resistance between pin 4 to pin 8, pin 3 to pin 7, pin 1 to pin 5 and pin 2 to pin 6.
R bridge ( at 150 C ) - R bridge ( at - 40 C ) TC Rbridge = 100 x ------------------------------------------------------------------------------------------------------R bridge ( at 25 C ) x ( 150 C - ( - 40 C ) ) V offset ( at 150 C ) - V offset ( at - 40 C ) TC Voffset = --------------------------------------------------------------------------------------------------150 C - ( - 40 C ) V O1 ( 67.5 )13545 - V O1 ( 67.5 )45135 FH 1 = 100 x ----------------------------------------------------------------------------------------------------------------------2 x V peak1 V O2 ( 22.5 )900 - V O2 ( 22.5 )090 F H 2 = 100 x ----------------------------------------------------------------------------------------------------------2 x V peak2
[5]
[6]
[7]
V peak1 k = 100 x ---------------V peak2 k ( at 150 C ) - k ( at - 40 C ) TC k = 100 x ---------------------------------------------------------------------------------------k ( at 25 C ) x ( 150 C - ( - 40 C ) ) = real - 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.
[8] [9]
KMZ43T_5
(c) NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 -- 4 March 2009
4 of 8
NXP Semiconductors
KMZ43T
Magnetic field sensor
VO (mV) VO2
= 0
ON1 0 ON2 VCC2 VCC1 VO1
direction of magnetic field
Vpeak2
Voffset2
GND1 GND2 OP2 OP1
mgu175
0
90
180
270
(deg)
360
Fig 2.
Output signals related to the direction of the magnetic field
006aaa530
VO (mV)
FH2 0
FH1 VO1 VO2
0
45
90
(deg)
135
Fig 3.
Definition of hysteresis
KMZ43T_5
(c) NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 -- 4 March 2009
5 of 8
NXP Semiconductors
KMZ43T
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 Dimensions in mm
0.49 0.36
0.25 0.19 03-02-18
Fig 4.
Minimized package outline SOT96-1
9. Revision history
Table 7. KMZ43T_5 Modifications: KMZ43T_4 KMZ43T_3 KMZ43T_2 KMZ43_1 Revision history Release date 20090304 Data sheet status Product data sheet Product data sheet Product specification Preliminary specification Objective specification Change notice Supersedes KMZ43T_4 KMZ43T_3 KMZ43T_2 KMZ43_1 Document ID
*
Table 6: TCVpeak and TCRbridge values adapted to 25 C reference point
20080326 20030915 20030326 20000824
KMZ43T_5
(c) NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 -- 4 March 2009
6 of 8
NXP Semiconductors
KMZ43T
Magnetic field sensor
10. Legal information
10.1 Data sheet status
Document status[1][2] Objective [short] data sheet Preliminary [short] data sheet Product [short] data sheet
[1] [2] [3]
Product status[3] Development Qualification Production
Definition This document contains data from the objective specification for product development. This document contains data from the preliminary specification. This document contains the product specification.
Please consult the most recently issued document before initiating or completing a design. The term `short data sheet' is explained in section "Definitions". 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.
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.
10.3 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
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: salesaddresses@nxp.com
KMZ43T_5
(c) NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 -- 4 March 2009
7 of 8
NXP Semiconductors
KMZ43T
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'.
(c) 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: salesaddresses@nxp.com Date of release: 4 March 2009 Document identifier: KMZ43T_5

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