SP37 450kPa

Product Brief
SP37 450kPa
Tire Pressure Sensor
Features
The SP37 is a highly integrated device which performs all necessary functions for
a Tire Pressure Monitoring System (TPMS) wheel module suited for high-volume
applications. The device contains the sensing elements, the microcontroller, the
„„
Pressure sensor with a range
from 100 up to 450kPa
LF receiver, the RF transmitter and more in one package requiring only few external
„„
Radial acceleration sensor
components to complete a TPMS module.
„„
Temperature sensor
„„
Supply voltage sensor
Since 2003, more than 150 million TPMS sensors of our continuously improved
„„
Embedded 8051 compatible
8-bit microcontroller
product generations were sold worldwide.
„„
6kB on-chip FLASH memory
The sensor design of the SP37 is based upon Infineon’s patented bulk micro-
„„
256Byte RAM
machined sensing technology which allows highly reliable measurements in harsh
„„
315 and 434MHz FSK/ASK
RF-transmitter
environments.
The SP37 measures pressure, radial acceleration, temperature and supply voltage.
„„
Selectable output power
of 5 or 8dBm
The device is compliant to the RoHS standard, with a pressure range from
„„
125kHz ASK high-sensitivity
100 up to 450kPa.
Numerous embedded firmware functions and a development kit enable fast
LF-receiver
„„
Advanced power control/
development cycles.
wake-up system to minimize
battery consumption
TPMS Module
SP37
„„
Ultra low standby current
3V Lithium Cell
(< 0.7µA)
„„
Supply voltage range 1.9…3.6V
„„
Operating temperature range
Power Supply Management
-40…125°C
Pressure
Sensor
Acceleration
Sensor
„„
PG-DSOSP-14-6 package
„„
RoHS compliant, green package
ADC
8-bit µC
RF
Transmitter
Temperature
Sensor
Tx Data
315/434MHz
Voltage
Sensor
Flash
Sensor Calibration
Data & Application
Firmware
www.infineon.com/sensors
ROM
Firmware
Library
LF
Receiver
Rx Data
125kHz
Product Brief
SP37 450kPa
Tire Pressure Sensor
Parameter
Symbol
Values
Min.
Typ.
Max.
Unit
Note/Test Condition
Input Pressure Range
Pin
100
–
450
kPa
T = -40...125°C
Measurement Error
pError
-7
–
+7
kPa
T = 0...50°C
pError
-9
–
+9
kPa
T = 50...70°C
pError
-17.5
–
+17.5
kPa
T = -40...0°C
Input Acceleration Range
ain
-115
–
115
g
T = -40...125°C
Sensitivity Error
aSensitivity
-18.75
–
+18.75
%
T = -40...90°C
aSensitivity
-24
–
+24
%
T = 90...125°C
AOffset
-6
–
+6
g
T = -20...70°C
AOffset
-8.5
–
+8.5
g
T = -40...-20°C
AOffset
-12
–
+12
g
T = 90...125°C
TError
-3
–
+3
°C
T = -20...70°C
TError
-5
–
+5
°C
T = -40...-20°C
T = 70...125°C
Offset Error
T = 70...90°C
Temperature Measurement Error
T = 70...125°C
Voltage Measurement Error
-100
VError
–
+100
mV
–
Tighter specifications are available on request.
Product Summary
Sales Name
Description
Order Code
SP370-25-106-0
Tire Pressure Sensor
SP000934274
Published by
Infineon Technologies AG
85579 Neubiberg, Germany
© 2012 Infineon Technologies AG.
All Rights Reserved.
Visit us:
www.infineon.com
Order Number: B142-H9490-G1-X-7600
Date: 06 / 2012
Attention please!
The information given in this document shall in no event
be regarded as a guarantee of conditions or characteristics
(“Beschaffenheitsgarantie”). With respect to any examples
or hints given herein, any typical values stated herein and/
or any information regarding the application of the device,
Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation warranties of non-infringement of intellectual property
rights of any third party.
Information
For further information on technology, delivery terms and
conditions and prices please contact your nearest Infineon
Technologies Office (www.infineon.com).
Warnings
Due to technical requirements components may contain
dangerous substances. For information on the types in
question please contact your nearest Infineon Technologies
Office. Infineon Technologies Components may only be
used in life-support devices or systems with the express
written approval of Infineon Technologies, if a failure of
such components can reasonably be expected to cause
the failure of that life-support device or system, or to affect
the safety or effectiveness of that device or system. Life
support devices or systems are intended to be implanted
in the human body, or to support and/or maintain and
sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons
may be endangered.