Magnetic field
sensor with
internal magnet
FEATURES
•ZMY20M (SOT-223-S) is an extremely sensitive magnetic sensor with internal magnet
employing the magneto-resistive effect of thin film permalloy
•Package : SOT-223-S
•The ZMY20M is available on 12 mm tape - 7" reel 1.000 components/reel or 13" reel
4.000 components/reel
•Disturbing fields up to 30 kA/m are allowed
•Internal magnet for creating of the auxiliary field HX
•Magnetic fields vertical to the chip level are not effective
ABSOLUTE MAXIMUM RATINGS
Parameter Symbol Unit
Supply voltage ZMY20M VB12 V
Total power dissipation Ptot 120 mW
Operating temperature range Tamb -25 to +125 °C
Storage temperature range Tstg -25 to +125 °C
ZMY20M
package : SOT223S (4-Pin)
1: +VO 2: -VO 3: +VB 4: -VB
VO - output voltage VB - supply voltage
Page 9
ZMY20M
ELECTRICAL CHARACTERISTICS (at Tamb = 25 °C unless otherwise stated)
Parameter Symbol Min. Typ. Max. Unit Test conditions
Bridge resistance Rbr 1.2 1.7 2.2 kΩ
Output voltage range VO/VB 12 18 22 mV/V
Auxiliary field HX - 1.5 - kA/m
Disturbing field Hd - - 30 kA/m
Open circuit sensitivity S 3.0 5.5 7.0 (mV/V)/(kA/m) no disturbing
field Hd allowed
VB = const.
Hysteresis of output voltage VOH/VB--50 µV/V Hy ≤ 2 kA/m
Offset voltage Voff/VB-1.5 - +1.5 mV/V
Operating frequency fmax 0 - 1 MHz
Temperature coefficient of
offset voltage TCVoff -3 - +3 (µV/V)/K Tamb =
-25...+125°C
Temperature coefficient of
bridge resistance TCRbr -0.3- %/K T
amb =
-25...+125°C
Temperature coefficient of
open circuit sensitivity
VB = 5 V
TCSV- -0.25 - %/K Tamb =
-25...+125°C
Temperature coefficient of
open circuit sensitivity
I B = 3 mA
TCSI- 0.05 - %/K Tamb =
-25...+125°C
Devices are identified by type on the body of the device
Ordering information :
ZMY20M..... ZMY20M
ZMY20MTA ..... 7" reel 1,000 components per reel
ZMY20MTC ..... 13" reel 4,000 components per reel
Page 10
Europe
Zetex plc
Fields New Road
Chadderton
Oldham, OL9 8NP
United Kingdom
Telephone (44) 161 622 4422
Fax: (44) 161 622 4420
uk.sales@zetex.com
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, NY11788
USA
Telephone: (631) 360 2222
Fax: (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
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
© Zetex plc 2002
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 purposes or form part of any
order or contract or be regarded as 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.
Some changes to earlier published data may have been made, data presented in this hand book
supersedes all previous specifications. The information contained in this publication has been
carefully checked and is considered to be accurate, but no responsibility is assumed for any
inaccuracies.
Zetex makes no warranty, representation or guarantee regarding the suitability of the products
and circuits in this publication for any given purpose; nor does Zetex assume any liability arising
from the use or application of any of these products or circuits and specifically disclaims any and
all consequential and incidental damages.
Zetex products are specifically not authorised for use as critical components in life support
devices or systems without the express written approval of the Managing Director of Zetex plc.
As used herein -
a. Life support devices or systems are devices or systems which
(1) are intended to implant into the body, or
(2) support or sustain life and whose failure to perform when properly used in accordance
with instructions for use provided in the labelling can be reasonably expected to result in
significant injury to the user.
b. A critical component is any component in a life support device or system whose failure to
perform can be reasonably expected to cause the failure of the life support device or to affect its
safety or effectiveness.
E. & O. E.
”all rights reserved“
PRODUCT AND INFORMATION DISCLAIMER
