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DISCRETE SEMICONDUCTORS
DATA SHEET
M3D315
KMZ43T Magnetic field sensor
Product specification Supersedes data of 2003 Mar 26 2003 Sep 15
Philips Semiconductors
Product specification
Magnetic field sensor
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 Fig.3). Unlike the KMZ41(1), which needs a saturation field strength of 100 kA/m, 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 DC and 1 MHz. The information in application notes AN00023 (Contactless Angle Measurement Using KMZ41 and UZZ9000) and AN00004 (Contactless Angle Measurement Using KMZ41 and UZZ9001) is applicable to the KMZ43T, but one should be aware of the difference in the bridge 1 output.
pin 1 index
KMZ43T
PINNING PIN 1 2 3 4 5 6 7 8 SYMBOL -VO1 -VO2 VCC2 VCC1 +VO1 +VO2 GND2 GND1 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
handbook, halfpage 8
5
x y
1
4
MGD790
(1) The KMZ41 delivers a +sin(2) and a -cos(2) signal.
Fig.1 Simplified outline SOT96-1.
QUICK REFERENCE DATA SYMBOL Per bridge VCC S Voffset Rbridge supply voltage sensitivity (2 = 0; 1 = 135) offset voltage per supply voltage bridge resistance per bridge - 2.1 -2 2.7 5 2.35 - 3.2 9 2.6 +2 3.7 V mV/ mV/V k PARAMETER MIN. TYP. MAX. UNIT
2003 Sep 15
2
Philips Semiconductors
Product specification
Magnetic field sensor
CIRCUIT DIAGRAM
KMZ43T
handbook, halfpage GND1
GND2 7
+VO2 6
+VO1 5
8
1 -VO1
2 -VO2
3 VCC2
4 VCC1
MGD789
Fig.2 Simplified circuit diagram.
LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 60134). SYMBOL VCC1 VCC2 Tstg Tamb PARAMETER supply voltage bridge 1 supply voltage bridge 2 storage temperature operating ambient temperature CONDITIONS - - -65 -40 MIN. 9 9 +150 +150 MAX. V V C C UNIT
STIMULATING FIELD STRENGTH CONDITIONS Hext Note 1. The minimum stimulating magnetic field in the x-y plane to ensure minimum angular inaccuracy specified in note 11 to Characteristics table. THERMAL CHARACTERISTICS SYMBOL Rth j-a PARAMETER thermal resistance from junction to ambient VALUE 155 UNIT K/W MIN. magnetic field strength note 1 CONDITIONS MIN. 25 - MAX. UNIT kA/m
2003 Sep 15
3
Philips Semiconductors
Product specification
Magnetic field sensor
CHARACTERISTICS Tamb = 25 C and Hext = 25 kA/m; VCC1 = 5 V; VCC2 = 5 V; unless otherwise specified. SYMBOL k TCk Per bridge VCC Voffset S supply voltage offset voltage per supply voltage sensitivity see Fig.3 open circuit; note 1 1 = 135 (bridge 1) 2 = 0 (bridge 2) TCS Vpeak TCVpeak Rbridge TCRbridge TCVoffset FH Notes 1. Sensitivity changes with angle due to sinusoidal output. 2. ST - ST 2 1 TC S = 100 x -------------------------------- where T1 = -40 C; T2 = 150 C. S T x 190C
1
KMZ43T
PARAMETER operating angular velocity amplitude synchronism temperature coefficient of amplitude synchronism angular inaccuracy
CONDITIONS 0 note 9 Tamb = -40 to +150 C; note 10 note 11
MIN. - 99.5 -0.01 0 - -2
TYP. 1 100 0 0.05
MAX. 100.5 -0.01 0.1 %
UNIT MHz %/K deg
5 0
9 +2
V mV/V
2.1 2.1 -0.25 60 -0.25 2.7 0.28 -4 0
2.35 2.35 -0.29 67 -0.29 3.2 0.32 0 0.05
2.6 2.6 -0.33 75 -0.33 3.7 0.35 +4 0.18
mV/ mV/ %/K mV %/K k %/K (V/V)/K %FS
temperature coefficient of sensitivity peak output voltage temperature coefficient of peak output voltage bridge resistance temperature coefficient of bridge resistance temperature coefficient of offset voltage hysteresis of output voltage
Tamb = -40 to +150 C; note 2 note 3; see Fig.3 Tamb = -40 to +150 C; note 4 note 5 Tamb = -40 to +150 C; note 6 Tamb = -40 to +150 C; note 7; see Fig.3 note 8
3. Vpeak = (Vout max - Voffset). Periodicity of Vpeak: sin(2) and cos(2) respectively. 4. V peak ( T ) - V peak ( T ) 2 1 TC Vpeak = 100 x ----------------------------------------------------- where T1 = -40 C; T2 = 150 C. V peak ( T ) x 190C
1
5. Bridge resistance between pins 8 and 4, pins 7 and 3, pins 5 and 1, and pins 6 and 2. 6. R bridge( T ) - R bridge( T ) 2 1 TC Rbridge = 100 x ---------------------------------------------------------- where T1 = -40 C; T2 = 150 C. R bridge ( T ) x 190C
1
7.
V offset ( T ) - V offset ( T ) 2 1 TC Voffset = -------------------------------------------------------- where T1 = -40 C; T2 = 150 C. 190C
2003 Sep 15
4
Philips Semiconductors
Product specification
Magnetic field sensor
V O1 ( 67.5 ) 135 45 - V O1 ( 67.5 ) 45 135 FH 1 = 100 x ---------------------------------------------------------------------------------------------------------- . 2 x V peak1 V O2 ( 22.5 ) 90 0 - V O2 ( 22.5 ) 0 90 FH 2 = 100 x ------------------------------------------------------------------------------------------------- . 2 x V peak2 9. V peak1 k = 100 x ----------------- . V peak2
KMZ43T
8.
kT - kT 2 1 10. TC k = 100 x ------------------------------- where T1 = -40 C; T2 = 150 C. k T x 190C
1
11. = real - measured without offset voltage influences due to deviations from ideal sinusoidal characteristics.
handbook, full pagewidth
100 VO1
Vout (mV) 50 Voffset 1
= 0
-VO1
direction of magnetic field
GND1 GND2 +VO2 +VO1
0 Vpeak 1 -50 VO2
0
-VO2 VCC2 VCC1
MBL215
-100 0 90 180 270
(deg)
360
Fig.3 Output signals related to the direction of the magnetic field.
2003 Sep 15
5
Philips Semiconductors
Product specification
Magnetic field sensor
KMZ43T
handbook, halfpage
Vout
MDB692
FH2
VO2
0 VO1 FH1
0
0
45
90
(deg)
135
Fig.4 Definition of hysteresis.
2003 Sep 15
6
Philips Semiconductors
Product specification
Magnetic field sensor
PACKAGE OUTLINE SO8: plastic small outline package; 8 leads; body width 3.9 mm
KMZ43T
SOT96-1
D
E
A X
c y HE vMA
Z 8 5
Q A2 A1 pin 1 index Lp 1 e bp 4 wM L detail X (A 3) A
0
2.5 scale
5 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT mm inches A max. 1.75 A1 0.25 0.10 A2 1.45 1.25 A3 0.25 0.01 bp 0.49 0.36 c 0.25 0.19 D (1) 5.0 4.8 0.20 0.19 E (2) 4.0 3.8 0.16 0.15 e 1.27 0.05 HE 6.2 5.8 L 1.05 Lp 1.0 0.4 Q 0.7 0.6 v 0.25 0.01 w 0.25 0.01 y 0.1 Z (1) 0.7 0.3
0.010 0.057 0.069 0.004 0.049
0.019 0.0100 0.014 0.0075
0.244 0.039 0.028 0.041 0.228 0.016 0.024
0.028 0.004 0.012
8 0o
o
Notes 1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. 2. Plastic or metal protrusions of 0.25 mm (0.01 inch) maximum per side are not included. OUTLINE VERSION SOT96-1 REFERENCES IEC 076E03 JEDEC MS-012 JEITA EUROPEAN PROJECTION
ISSUE DATE 99-12-27 03-02-18
2003 Sep 15
7
Philips Semiconductors
Product specification
Magnetic field sensor
DATA SHEET STATUS LEVEL I DATA SHEET STATUS(1) Objective data PRODUCT STATUS(2)(3) Development DEFINITION
KMZ43T
This data sheet contains data from the objective specification for product development. Philips Semiconductors reserves the right to change the specification in any manner without notice. This data sheet contains data from the preliminary specification. Supplementary data will be published at a later date. Philips Semiconductors reserves the right to change the specification without notice, in order to improve the design and supply the best possible product. This data sheet contains data from the product specification. Philips Semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. Relevant changes will be communicated via a Customer Product/Process Change Notification (CPCN).
II
Preliminary data Qualification
III
Product data
Production
Notes 1. Please consult the most recently issued data sheet before initiating or completing a design. 2. The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com. 3. For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status. DEFINITIONS Short-form specification The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification. DISCLAIMERS Life support applications These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes Philips Semiconductors reserves the right to make changes in the products including circuits, standard cells, and/or software described or contained herein in order to improve design and/or performance. When the product is in full production (status `Production'), relevant changes will be communicated via a Customer Product/Process Change Notification (CPCN). Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no licence or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified.
2003 Sep 15
8
Philips Semiconductors - a worldwide company
Contact information For additional information please visit http://www.semiconductors.philips.com. Fax: +31 40 27 24825 For sales offices addresses send e-mail to: sales.addresses@www.semiconductors.philips.com.
(c) Koninklijke Philips Electronics N.V. 2003
SCA75
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights.
Printed in The Netherlands
613520/03/pp9
Date of release: 2003
Sep 15
Document order number:
9397 750 11713

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