This tire pressure monitoring sensor is optimized for battery-powered valve-based TPMS applications and is designed for very low charge consumption. It integrates a patented Glass-Silicon-Glass MEMS pressure sensor, a 32-bit ARM Cortex-M0+ core, 19 kB of flash memory, an integrated G-sensor, and a hardware master/slave I²C interface. The device measures absolute pressure, temperature, battery voltage, and z-axis acceleration, and it includes LF receiver and RF transmitter functions for TPMS nodes. It supports a pressure range of 1000 hPa to 9200 hPa and a temperature range of -40 °C to 125 °C in a PG-DSOSP-14-84 package.
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Infineon SP490-01-11 technical specifications.
| Pressure Range | 1000 to 9200hPa |
| Operating Temperature Range | -40 to 125°C |
| Extended Temperature Range | -50 to 150°C |
| Flash Memory | 19kB |
| Integrated G-Sensor | Yes |
| Microcontroller Core | ARM Cortex-M0+ |
| Interface | I²C master/slave |
| LF Carrier Frequency | 115 to 135kHz |
| LF Data Rate | 3.8 to 4.2kbit/s |
| LF Data Duty Cycle | 45 to 55% |
| I²C Medium Data Rate | 400kbit/s |
| I²C High Data Rate | 1000kbit/s |
| RF Transmission Supply Current | 5.5 typ, 6.7 maxmA |
| Flash Write Current | 6 maxmA |
| Power-Down Supply Current | 150 typ, 500 maxnA |
| Inrush Current | 8 maxmA |
| PLL Lock Time | 100 maxµs |
| Typical Battery Life | 10 with CR2032 batteryyears |
| RoHS Compliant | Yes |
| Lead-free | Yes |
| Halogen Free | Yes |
No datasheet is available for this part.
