ZMY20M
MAGNETIC FIELD SENSOR WITH INTERNAL MAGNET
DESCRIPTION
The ZMY20M is an extremely sensitive magnetic sensor
employing the magneto-resistive effect of thin film permalloy.
It allows the measurement of magnetic fields or the detection
of magnetic parts. The highly sensitive and small size
magnetoresistive sensors consist of chip covered with thin film
permalloy stripes. These stripes form a Wheatstone bridge,
whose output voltage is proportional to the magnetic field
component Hy. The required perpendicular field Hx which is
necessary to stabilize sensor operation, is created by an
internal permanent magnet.
FEATURES
•
Package: SOT223
•
Supply voltage 12V
•
Internal magnet for creation of auxiliary field Hx
•
Available on 12mm tape
APPLICATIONS
•
Linear position measurement
•
Angular position measurement
•
Navigation (electronic compass)
•
Revolution measurement
ORDERING INFORMATION
DEVICE
REEL
SIZE
7”
13”
TAPE WIDTH
12mm
12mm
QUANTITY PER
REEL
1,000
4,000
ZMY20MTA
ZMY20MTC
DEVICE MARKING
•
ZMY20M
ISSUE 2 - JANUARY 2004
1
SEMICONDUCTORS
ZMY20M
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply voltage
Total power dissipation
Operating temperature range
Storage temperature range
SYMBOL
V
B
P
TOT
T
amb
T
stg
LIMIT
12
120
-25 to +125
-25 to +125
UNIT
V
mW
°C
°C
ELECTRICAL CHARACTERISTICS
(at T
amb
= 25°C unless otherwise stated)
PARAMETER
Bridge resistance
Output voltage range
Auxiliary field
Disturbing field
Open circuit sensitivity
SYMBOL
R
br
V
O
/V
B
Hx
Hd
S
MIN.
1.2
12
-
-
3.0
TYP.
1.7
18
2
-
5.5
MAX.
2.2
24
-
30
7.0
UNIT
k
mV/V
kA/m
kA/m
(mV/V)/ No disturbing field
(kA/m) H
d
allowed
V
B
= const.
V/V
mV/V
MHz
( V/V)/K T amb = -25 to +125°C
%/K
%/K
T amb = -25 to +125°C
T amb = -25 to +125°C
Hy
2kA/m
CONDITIONS
Hysteresis of output voltage
Offset voltage
Operating frequency
Temperature coefficient of
offset voltages
Temperature coefficient of
bridge resistance
Temperature coefficient of
open circuit sensitivity
V
B
= 5V
Temperature coefficient of
open circuit sensitivity
I
B
= 3mA
V
OH
/V
B
V
off
/V
B
f
max
TCV
off
TCR
br
TCS
V
-
-1.5
0
-3
0.25
-0.25
-
-
-
-
0.3
-0.3
50
+1.5
1
+3
0.35
-0.35
TCS
I
-
0.05
-
%/K
T amb = -25 to +125°C
ISSUE 2 - JANUARY 2004
SEMICONDUCTORS
2
ZMY20M
ISSUE 2 - JANUARY 2004
3
SEMICONDUCTORS
ZMY20M
PACKAGE OUTLINE
Controlling dimensions are in millimeters. Approximate conversions are given in inches
PACKAGE DIMENSIONS
Millimeters
DIM
Min
A
A1
b
b2
C
D
-
0.02
0.66
2.90
0.23
6.30
Max
1.80
0.10
0.84
3.10
0.33
6.70
Min
-
0.0008
0.026
0.114
0.009
0.248
Max
0.071
0.004
0.033
0.122
0.013
0.264
e
e1
E
E1
L
-
Inches
DIM
Min
Max
Min
Max
2.30 BSC
4.60 BSC
6.70
3.30
0.90
-
7.30
3.70
-
-
0.0905 BSC
0.181 BSC
0.264
0.130
0.355
-
0.287
0.146
-
-
Millimeters
Inches
© Zetex plc 2003
Europe
Zetex GmbH
Streitfeldstraße 19
D-81673 München
Germany
Telefon: (49) 89 45 49 49 0
Fax: (49) 89 45 49 49 49
europe.sales@zetex.com
Americas
Zetex Inc
700 Veterans Memorial Hwy
Hauppauge, NY 11788
USA
Telephone: (1) 631 360 2222
Fax: (1) 631 360 8222
usa.sales@zetex.com
Asia Pacific
Zetex (Asia) Ltd
3701-04 Metroplaza Tower 1
Hing Fong Road, Kwai Fong
Hong Kong
Telephone: (852) 26100 611
Fax: (852) 24250 494
asia.sales@zetex.com
Corporate Headquaters
Zetex plc
Fields New Road, Chadderton
Oldham, OL9 8NP
United Kingdom
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
4
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