DATA SHEET

Product specification
Supersedes data of 1996 Dec 11
File under Discrete Semiconductors, SC17

1998 Mar 26

DISCRETE SEMICONDUCTORS

KMZ41
Magnetic field sensor

M3D315

1998 Mar 26

2

Philips Semiconductors

Product specification

Magnetic field sensor

KMZ41

DESCRIPTION

The KMZ41 is a sensitive magnetic field sensor,
employing the magnetoresistive effect of thin-film
permalloy. The sensor contains two galvanic separated
Wheatstone bridges. Its properties enable this sensor to
be used in angle measurement applications under strong
field conditions. A rotating magnetic field
(strength > 100 kA/m) in the x-y plane will deliver a
sinusoidal output signal. The sensor can be operated at
any frequency between DC and 1 MHz.

PINNING

PIN

SYMBOL

DESCRIPTION

1

−

V

O1

output voltage bridge 1

2

−

V

O2

output voltage bridge 2

3

V

CC2

supply voltage bridge 2

4

V

CC1

supply voltage bridge 1

5

+V

O1

output voltage bridge 1

6

+V

O2

output voltage bridge 2

7

GND2

ground 2

8

GND1

ground 1

Fig.1 Simplified outline SOT96-1.

handbook, halfpage

4

1

5

8

MGD790

pin 1

index

x

y

QUICK REFERENCE DATA

SYMBOL

PARAMETER

MIN.

TYP.

MAX.

UNIT

V

CC1

bridge supply voltage

−

5

9

V

V

CC2

bridge supply voltage

−

5

9

V

S

sensitivity (

α

= 0

°,

45

°)

−

2.86

−

mV/

°

R

bridge

bridge resistance

2

−

3

k

Ω

V

offset1

offset voltage

−

8

−

+8

mV/V

V

offset2

offset voltage

−

8

−

+8

mV/V

1998 Mar 26

3

Philips Semiconductors

Product specification

Magnetic field sensor

KMZ41

CIRCUIT DIAGRAM

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

THERMAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN.

MAX.

UNIT

V

CC

bridge supply voltage

−

12

V

P

tot

total power dissipation

up to T

amb

= 130

°

C

−

120

mW

T

stg

storage temperature

−

65

+150

°

C

T

bridge

bridge operating temperature

−

40

+150

°

C

SYMBOL

PARAMETER

VALUE

UNIT

R

th j-a

thermal resistance from junction to ambient

155

K/W

Fig.2 Simplified circuit diagram.

handbook, halfpage

GND1

8

7

6

5

1

2

3

4

MGD789

GND2

+

VO2

+

VO1

−

VO1

−

VO2

VCC2

VCC1

1998 Mar 26

4

Philips Semiconductors

Product specification

Magnetic field sensor

KMZ41

CHARACTERISTICS

T

amb

= 25

°

C; H

rotation

= 100 kA/m; V

CC1

= 5 V; V

CC2

= 5 V unless otherwise specified.

Note

1. Sensitivity changes with angle due to sinusoidal output.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

V

CC1

bridge supply voltage

−

5

9

V

V

CC2

bridge supply voltage

−

5

9

V

S

sensitivity

open circuit, note 1;

α

= 0

°

(bridge 2);

α

= 90

°

(bridge 1)

2.62

2.86

3.10

mV/

°

V

peak 1

peak voltage

75

82

89

mV

V

peak 2

peak voltage

75

82

89

mV

TCV

O

temperature coefficient of
output voltage

V

CC

= 5 V;

T

amb

=

−

25 to +125

°

C

−

−

0.4

−

%/K

I

CC

= 3 mA;

T

amb

=

−

25 to +125

°

C

−

−

0.1

−

%/K

R

bridge

bridge resistance

2

−

3

k

Ω

TCR

bridge

temperature coefficient of
bridge resistance

T

bridge

=

−

25 to +125

°

C

−

0.3

−

%/K

V

offset

offset voltage

−

8

−

+8

mV/V

TCV

offset

temperature coefficient of
offset voltage

T

bridge

=

−

25 to +125

°

C

−

3

−

+

3

FH

hysteresis of output voltage

−

−

0.5

%

⋅

FS

f

operating frequency

0

−

1

MHz

µ

V V

⁄

K

---------------

Fig.3 Output signals related to the direction of the magnetic field.

handbook, full pagewidth

MGD788

−

VO1

−

VO2

VCC2

VCC1

GND1

direction of

magnetic field

α

= 0

°

α

GND2

+

VO2

+

VO1

0

Vout

0

−

Vpeak

+

Vpeak

90

180

360

270

α

(deg)

VO2

VO1

1998 Mar 26

5

Philips Semiconductors

Product specification

Magnetic field sensor

KMZ41

PACKAGE OUTLINE

UNIT

A

max.

A

1

A

2

A

3

b

p

c

D

(1)

E

(2)

(1)

e

H

E

L

L

p

Q

Z

y

w

v

θ

REFERENCES

OUTLINE

VERSION

EUROPEAN

PROJECTION

ISSUE DATE

IEC

JEDEC

EIAJ

mm

inches

1.75

0.25
0.10

1.45
1.25

0.25

0.49
0.36

0.25
0.19

5.0
4.8

4.0
3.8

1.27

6.2
5.8

1.05

0.7
0.6

0.7
0.3

8
0

o

o

0.25

0.1

0.25

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

Notes

1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.

2. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

1.0
0.4

SOT96-1

X

w

M

θ

A

A

1

A

2

b

p

D

H

E

L

p

Q

detail X

E

Z

e

c

L

v

M

A

(A )

3

A

4

5

pin 1 index

1

8

y

076E03S

MS-012AA

0.069

0.010
0.004

0.057
0.049

0.01

0.019
0.014

0.0100
0.0075

0.20
0.19

0.16
0.15

0.050

0.244
0.228

0.028
0.024

0.028
0.012

0.01

0.01

0.041

0.004

0.039
0.016

0

2.5

5 mm

scale

SO8: plastic small outline package; 8 leads; body width 3.9 mm

SOT96-1

95-02-04
97-05-22

1998 Mar 26

6

Philips Semiconductors

Product specification

Magnetic field sensor

KMZ41

DEFINITIONS

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 customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.

Data Sheet Status

Objective specification

This data sheet contains target or goal specifications for product development.

Preliminary specification

This data sheet contains preliminary data; supplementary data may be published later.

Product specification

This data sheet contains final product specifications.

Limiting values

Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). 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

Where application information is given, it is advisory and does not form part of the specification.

1998 Mar 26

7

Philips Semiconductors

Product specification

Magnetic field sensor

KMZ41

NOTES

Internet: http://www.semiconductors.philips.com

Philips Semiconductors – a worldwide company

© Philips Electronics N.V. 1996

SCA52

All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.

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Printed in The Netherlands

115106/00/03/pp8

Date of release: 1998 Mar 26

Document order number:

9397 750 03608