SP370-23-156-0 Datasheet, PDF (1/2 Pages) Infineon Technologies AG – Tire Pressure Sensor

Product Brief
SP37 1300kPa
Tire Pressure Sensor
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
LF receiver, the RF transmitter and more in one package requiring only few external
components to complete a TPMS module.
Since 2003, more than 150 million TPMS sensors of our continuously improved
product generations were sold worldwide.
The sensor design of the SP37 is based upon Infineon’s patented bulk micro-
machined sensing technology which allows highly reliable measurements in harsh
environments.
The SP37 measures pressure, radial acceleration, temperature and supply voltage.
The device is compliant to the RoHS standard, with a pressure range from
100 up to 1300kPa.
Numerous embedded firmware functions and a development kit enable fast
development cycles.
TPMS Module
3V Lithium Cell
SP37
Power Supply Management
Pressure
Sensor
Acceleration
Sensor
Temperature
Sensor
Voltage
Sensor
ADC
8-bit µC
Flash
Sensor Calibration
Data & Application
Firmware
ROM
Firmware
Library
RF
Transmitter
Tx Data
315/434MHz
LF
Receiver
Rx Data
125kHz
Features
„„Pressure sensor with a range
from 100 up to 1300kPa
„„Radial acceleration sensor
„„Temperature sensor
„„Supply voltage sensor
„„Embedded 8051 compatible
8-bit microcontroller
„„6kB on-chip FLASH memory
„„256Byte RAM
„„315 and 434MHz FSK/ASK
RF-transmitter
„„Selectable output power
5 or 8dBm
„„125kHz ASK high-sensitivity
LF-receiver
„„Advanced power control/
wake-up system to minimize
battery consumption
„„Ultra low standby current
(< 0.7µA)
„„Supply voltage range 1.9…3.6V
„„Operating temperature range
-40…125°C
„„PG-DSOSP-14-6 package
„„RoHS compliant, green package
www.infineon.com/sensors