P
R O D U C T
B
R I E F
T YRE PRESSURE SENSOR
FOR HEAVY VEHICLES
SP12T is a piezoresistive pressure sensor designed for tyre pressure measurement in heavy vehicle applications. The design is based on
proven high-volume, low cost production processes developed for products to be used in automotive applications.
The sensor design is based upon SensoNor's proprietary and patented solutions aimed at high reliabilty measurements in harsh
environments, still with a predictable and stable quality in high volume applications
The SP12T measures pressure, temperature and supply voltage, and by integrating these functions with an ASIC in one package, SensoNor
has developed the ideal product for tyre pressure monitoring applications, offering the system designer the flexibility to determine
sequences and functionality.
F u t u r e Te c h n o l o g y To d a y .
An Infineon Technologies Company
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Pressure sensor:
Range:
Temperature sensor:
Range:
Supply Voltage sensor:
Range:
50 to 1400kPa
-40 to +125C
1.8 to 3.6V
S P
1 2
T
P
R O D U C T
B
R I E F
PACKAGE T YPE 1
How to reach us:
Phone: +47 33 03 50 00
Fax: +47 33 03 50 05
www.sensonor.com
marketing@sensonor.no
Published by
SensoNor AS
Knudsrdveien 7
P.O.Box 196
N.3192 Horten
Norway
SensoNor AS 2003. All Rights Reserved
October 2003, 1000 ex.
Attention please!
The information herein is given to describe certain components and shall not be considered as a guarantee of characteristics.
Terms of delivery and rights to technical change reserved.
We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding circuits
descriptions and charts stated herein.
Information
For further information on technology, delivery terms and conditions and prices please contact SensoNor AS
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PARAMETER
MIN
MAX
UNIT
ABSOLUTE MAXIMUM RATINGS
Prolonged exposure to values between recommended operating conditions and absolute maximum ratings
might affect the performance or reliability of the device
Input pressure
Storage temperature
Temperature in application
Temperature in application, transient
Supply voltage
Input voltage, any pin
Latch-up protection
ESD protection (machine model)
ESD protection (human body model)
Mechanical shock
Static acceleration
kPa
C
C
C
V
V
mA
VkV
g
g
3300
150
150
175
6.0
VDD +0.3
100
200
2
2000
2000
-40
-40
-40
-0.3
-0.3
-100
-200
-2
SPECIFICATION
AMBIENT CONDITION
PARAMETER
SUPPLY VOLTAGE MEASUREMENTS
All specification limits to be understood as 5 sigma values
Input range
Resolution
Measurement error
Delay time between supply
voltage measurement
command and sampling
Delay time between sampling
and A/D conversion
Supply measurement time
Unit Min Typ Max Temperature [ C] Supply voltage [ V ]
1.8 - 3.6
2.1 - 3.6
2.1 - 3.6
2.1 - 3.6
2.1 - 3.6
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 125
3.6
0.1
4.2
12
17
1.8
-0.1
2.8
8
0.0184
3.5
10
V
V/lsb
V
ms
ms
ms
SPECIFICATION
AMBIENT CONDITION
PARAMETER
TEMPERATURE MEASUREMENTS
All specification limits to be understood as 5 sigma values
Unit Min Typ Max Temperature [ C] Supply voltage [ V ]
Input range
Resolution
Deviation from
actual temperature
Measurement time
2.1 - 3.6
2.1 - 3.6
2.1 - 3.6
2.1 - 3.6
2.1 - 3.6
2.1 - 3.6
-40 to 125
-40 to 125
0 to 50
-40 to 100
100 to 125
0 to 50
-40 to 125
125
4
5
8
7
10
1.5
1
-40
-4
-5
-8
-7
-10
C
C/lsb
C
C
C
C
C
ms
PRESSURE MEASUREMENTS
All specification limits to be understood as 5 sigma values. The specified values reflect the situation with an ideal
voltage source (0 ohm internal resistance)
SPECIFICATION
AMBIENT CONDITION
PARAMETER
Unit Min Typ Max Temperature [ C] Pressure [kPa] Supply voltage [ V ]
Input range
Resolution
Measurement error
Measurement time
2.1 - 3.6
2.1 - 3.6
2.1 - 3.6
2.1 - 3.6
2.1 - 3.6
50 - 1400
50 - 1400
50 - 1400
50 - 1400
50 - 1400
-40 to 125
-40 to 125
0 to 50
-20 to 70
-40 to 125
1400
28
48
68
6
--
2.97
50
-28
-48
-68
kPa
kPa/lsb
kPa
kPa
kPa
ms
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