DIODES ZMZ20

ZMZ20
MAGNETIC FIELD SENSORS
DESCRIPTION
The ZMZ20 is an extremely sensitive magnetic field sensor in a 4 pin
E-Line package employing the magneto-resistive effects of thin film
Permalloy. It allows the measurement of magnetic fields or the detection
of metallic parts. The sensor consists of a chip covered with Permalloy
stripes which form a Wheatstone bridge, whose output voltage is
proportional to the magnetic field component Hy. A perpendicular field
Hx is necessary to suppress the hysteresis and this can be provided by
using a small permanent magnet.
FEATURES
• Output voltage proportional to magnetic field Hy
E-LINE
• Adjustment of sensitivity and suppression of
hysteresis by the auxiliary magnetic field Hx
• Magnetic fields vertical to the chip level are not
effective
APPLICATIONS
• Linear position sensors for process control, door
interlocks, proximity detectors, machine tool sensing
• Scalar measurement for compassing
• Automotive - door switches, engine position and
speed sensing
• Metering of fluids by sensing rotation of impeller
• Traffic counting and vehicle-type sensing
• Measurement of current in a conductor without
connection
PINOUT
ORDERING INFORMATION
DEVICE
BOX
ZMZ20
Bulk in box (2,000 components per box)
DEVICE MARKING
• M20
SIDE VIEW
ISSUE 2 - JANUARY 2004
1
SEMICONDUCTORS
ZMZ20
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
LIMIT
UNIT
Supply voltage
VB
12
V
Total power dissipation
P TOT
120
mW
Operating temperature range
T amb
-40 to +150
°C
ELECTRICAL CHARACTERISTICS (at Tamb = 25°C and Hx=3kA/m unless otherwise stated)
PARAMETER
SYMBO
MIN.
TYP.
MAX.
UNIT
Bridge resistance
R br
1.2
1.7
2.2
k⍀
Output voltage range
V O /V B
16
20
24
mV/V
Open circuit sensitivity
S
3.7
4.7
5.7
Hysteresis of output voltage
V OH /V B
-
-
50
µV/V
Offset voltage
V off /V B
-1.0
-
+1.0
mV/V
0
-
Operating frequency
f max
Temperature coefficient of offset
voltages
TCV off
Temperature coefficient of bridge
resistance
Temperature coefficient of open
circuit sensitivity
CONDITIONS
(mV/V)/(kA/m) No disturbing field H d
allowed
Hy = 2kA/m
1
MHz
+3
(µV/V)/K
T amb = -25 to +125°C
-3
-
TCR br
0.25
0.3
0.35
%/K
T amb = -25 to +125°C
TCS V
-0.25
-0.3
-0.35
%/K
T amb = -25 to +125°C
TCS I
-
-0.1
-
%/K
Tamb = -25 to +125°C
V B =5V
Temperature coefficient of open
circuit sensitivity
I B =3mA
ISSUE 2 - JANUARY 2004
SEMICONDUCTORS
2
ZMZ20
Application 1 (digital output)
+Ub
22k
1M
4
10k
10k
8
3
10k
1
ZMZ20
6
10k
-
5 +
U1B
7
TL072
22k
1
out
TL072
4
10k
2
U1A
3 +
2 -
10k
GND
Application 2 (analog output)
+Ub
5 + U1B
7
6 TL074
4
1
ZMZ20
R4
10k
R1
100k
R3
10k
9
10
+
U1C
TL074
8
30k
13 - U1D
14
12 +
TL074
3
2
R6
R2
100k
R5
10k
4
3 + U1A
1
2 TL074
1
1
Uo
R7
30k
GND
-Ub
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3
SEMICONDUCTORS
ZMZ20
ISSUE 2 - JANUARY 2004
SEMICONDUCTORS
4
ZMZ20
ISSUE 2 - JANUARY 2004
5
SEMICONDUCTORS
ZMZ20
PACKAGE OUTLINE
D
R
E A
B
G
G
G
H
C
F
B1
L
B
Controlling dimensions are in millimeters. Approximate conversions are given in inches
PACKAGE DIMENSIONS
Millimeters
Inches
DIM
Min
Max
Min
Max
A
0.8
1.0
0.032
0.039
B
0.35
0.48
0.014
0.019
B1
0.45
0.60
0.018
0.024
C
4.0
4.4
0.158
0.173
D
3.8
4.2
0.150
0.165
E
2.4
2.8
0.094
0.110
F
1.2
-
0.047
-
G
1.25
-
0.049
-
© Zetex plc 2003
Europe
Americas
Asia Pacific
Corporate Headquaters
Zetex GmbH
Streitfeldstraße 19
D-81673 München
Germany
Zetex Inc
700 Veterans Memorial Hwy
Hauppauge, NY 11788
USA
Zetex (Asia) Ltd
3701-04 Metroplaza Tower 1
Hing Fong Road, Kwai Fong
Hong Kong
Zetex plc
Fields New Road, Chadderton
Oldham, OL9 8NP
United Kingdom
Telefon: (49) 89 45 49 49 0
Fax: (49) 89 45 49 49 49
europe.sales@zetex.com
Telephone: (1) 631 360 2222
Fax: (1) 631 360 8222
usa.sales@zetex.com
Telephone: (852) 26100 611
Fax: (852) 24250 494
asia.sales@zetex.com
Telephone (44) 161 622 4444
Fax: (44) 161 622 4446
hq@zetex.com
These offices are supported by agents and distributors in major countries world-wide.
This publication is issued to provide outline information only which (unless agreed by the Company in writing) may not be used, applied or reproduced
for any purpose or form part of any order or contract or be regarded as a representation relating to the products or services concerned. The Company
reserves the right to alter without notice the specification, design, price or conditions of supply of any product or service.
For the latest product information, log on to
www.zetex.com
ISSUE 2 - JANUARY 2004
SEMICONDUCTORS
6