Infineon SP35 Tire Pressure Sensor
The SP35 is a highly integrated device which performs all necessary functions of a TPM module in the wheel for high-volume applications. The device contains the sensing element, the micro controller, the LF receiver and the transmitter in one package.
The Sensor design is based upon Infineon’s patented bulk micro-machined sensing technology which allows highly reliable measurements in harsh environments. The SP35 measures pressure, temperature, supply voltage and radial acceleration. The device is offered with a pressure range of 100–450 kPa.
The Infineon SP35 Tire Pressure Sensor incorporates all the major active functions of wheel-mounted TPMS in a single package. The integrated device, mounted on a printed circuit board with a battery and antenna, enables tier-one suppliers to meet the requirements of the new regulations. Its single package integrates an MEMS pressure sensor, acceleration sensor and temperature sensor with an 8-bit controller and wireless communication module. It eliminates the need for separate communication chips, thus reducing complexity and reportedly cutting costs by about 10 percent.
Major Functional Blocks of SP35 Tyre Pressure Sensor
Pressure sensor
Radial acceleration sensor
Temperature sensor
Battery voltage sensor
8051 compatible microcontroller
6 kByte onchip FLASH memory
256 byte RAM
Advanced power control/wake-up system to minimize battery consumption
RF transmitter for 315 and 434 MHz
Selectable output power 5 or 8 dBm
LF receiver for 125 kHz
P-DSOSP-14-6 Package
Download Infineon SP35 Tire Pressure Sensor Application Note
The SP35 is a highly integrated device which performs all necessary functions of a TPM module in the wheel for high-volume applications. The device contains the sensing element, the micro controller, the LF receiver and the transmitter in one package.
The Sensor design is based upon Infineon’s patented bulk micro-machined sensing technology which allows highly reliable measurements in harsh environments. The SP35 measures pressure, temperature, supply voltage and radial acceleration. The device is offered with a pressure range of 100–450 kPa.
The Infineon SP35 Tire Pressure Sensor incorporates all the major active functions of wheel-mounted TPMS in a single package. The integrated device, mounted on a printed circuit board with a battery and antenna, enables tier-one suppliers to meet the requirements of the new regulations. Its single package integrates an MEMS pressure sensor, acceleration sensor and temperature sensor with an 8-bit controller and wireless communication module. It eliminates the need for separate communication chips, thus reducing complexity and reportedly cutting costs by about 10 percent.
Major Functional Blocks of SP35 Tyre Pressure Sensor
Pressure sensor
Radial acceleration sensor
Temperature sensor
Battery voltage sensor
8051 compatible microcontroller
6 kByte onchip FLASH memory
256 byte RAM
Advanced power control/wake-up system to minimize battery consumption
RF transmitter for 315 and 434 MHz
Selectable output power 5 or 8 dBm
LF receiver for 125 kHz
P-DSOSP-14-6 Package
Download Infineon SP35 Tire Pressure Sensor Application Note
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