MSP-100KPA-A
AEC-Q100 qualified MEMS pressure sensor for tire pressure monitoring systems with 0-100kPa range and ±1% accuracy.
Product Overview
Description
The MSP-100KPA-A is an automotive-grade MEMS pressure sensor specifically designed for tire pressure monitoring system (TPMS) applications. It features a robust MEMS sensing element with advanced temperature compensation.
With ±1% full-scale accuracy and -40°C to +125°C operating temperature range, this sensor meets stringent automotive reliability requirements. The analog voltage output (0.5-4.5V) provides simple interface with TPMS controllers.
The sensor's compact SOP-8 package and automotive-qualified design make it ideal for both direct TPMS (valve-mounted) and indirect TPMS applications.
Product Series
MSP
Primary Application
Tire Pressure Monitoring Systems (TPMS)
Key Features
- AEC-Q100 Grade 0 qualified for automotive applications
- Advanced MEMS technology with temperature compensation
- ±1% full-scale accuracy across operating temperature range
- Fast response time <1ms for real-time monitoring
- Compact SOP-8 package for space-constrained designs
- Low power consumption suitable for battery-powered TPMS
Specifications
| Pressure Range | 0-100kPa (Absolute) |
|---|---|
| Accuracy | ±1% FS |
| Output Type | Analog 0.5-4.5V |
| Operating Temperature | -40°C to +125°C |
| Supply Voltage | 5V ±0.25V |
| Response Time | <1ms |
| Package | SOP-8 |
| Qualification | AEC-Q100 Grade 0 |
Applications
Tire Pressure Monitoring Systems (TPMS)
Electronic system design
Automotive HVAC pressure sensing
Automotive and EV electronics
Industrial pneumatic systems
Industrial automation and control
Medical respiratory equipment
Medical electronics
Consumer appliance pressure sensing
Consumer electronics
FAE Expert Insights
"In my 8 years supporting automotive sensor applications, the MSP-100KPA-A has proven to be a reliable and cost-effective solution for TPMS designs. I particularly appreciate its consistent accuracy across the automotive temperature range, which is critical for TPMS applications where safety depends on accurate pressure readings. The sensor's fast response time enables real-time monitoring without system lag. For TPMS designs, I recommend implementing proper EMI filtering on the power supply line and ensuring adequate PCB copper area for thermal management. The SOP-8 package is compatible with standard SMT processes, making manufacturing straightforward. Compared to international brands, this sensor offers comparable performance at a significantly better price point, making it ideal for high-volume TPMS production."
Reliable TPMS solution with automotive-grade accuracy and competitive pricing
— Michael Chen, BeiLuo
Frequently Asked Questions
What is the recommended PCB layout for the MSP-100KPA-A?
For optimal performance with the MSP-100KPA-A, follow these PCB layout guidelines: 1) Place decoupling capacitors (100nF ceramic + 10uF tantalum) within 5mm of the supply pins; 2) Keep analog output traces away from digital switching signals; 3) Provide adequate copper area for thermal dissipation; 4) Use ground planes to minimize noise pickup; 5) Ensure the pressure port has clear access without obstruction. For automotive applications, implement additional EMI filtering on the power supply line and use shielded cables if the sensor is remotely located from the controller.
Follow the application note AN-PS-001 for detailed PCB layout recommendations and reference designs.
How do I calibrate the MSP-100KPA-A for maximum accuracy?
The MSP-100KPA-A is factory-calibrated, but additional system-level calibration can improve accuracy: 1) Two-point calibration at zero pressure (atmospheric) and full scale using precision pressure references; 2) Temperature compensation calibration across the operating range if needed; 3) Store calibration coefficients in system EEPROM; 4) Apply correction in software using linear or polynomial interpolation. For most automotive TPMS applications, factory calibration is sufficient. Medical or high-precision applications may benefit from additional calibration.
Evaluate your accuracy requirements - factory calibration is sufficient for ±1% applications, while custom calibration may be needed for higher precision.
What are the EMI/EMC considerations for automotive TPMS applications?
Automotive TPMS sensors must withstand harsh electromagnetic environments. Key EMI/EMC considerations include: 1) Power supply filtering using ferrite beads and capacitors; 2) Proper grounding and shielding of sensor cables; 3) Layout techniques to minimize loop areas; 4) The MSP-100KPA-A meets automotive EMC requirements when properly integrated. For valve-stem mounted sensors, ensure the antenna design does not interfere with pressure measurements. Conduct pre-compliance testing early in the design phase to identify and resolve any EMC issues.
Follow automotive EMC design guidelines and conduct pre-compliance testing. Contact our FAE for EMC troubleshooting support.
Can the MSP-100KPA-A be used for media other than air?
The MSP-100KPA-A is designed for dry air and non-corrosive gas applications. For liquid media or corrosive gases, use an isolation diaphragm or protective barrier. The sensor's wetted materials (silicon, glass, epoxy) may not be compatible with all chemicals. For fuel vapor applications, verify compatibility with the specific fuel type. Memsensing offers custom port configurations and materials for special media applications. Contact our application engineering team for media compatibility assessment.
For non-air media, consult the chemical compatibility guide or contact our FAE to evaluate suitability or discuss custom solutions.
What is the long-term drift specification for the MSP-100KPA-A?
The MSP-100KPA-A exhibits excellent long-term stability with typical drift of less than ±0.3% FS per year under normal operating conditions. Factors affecting long-term drift include: 1) Temperature cycling magnitude and frequency; 2) Maximum pressure exposure; 3) Media compatibility; 4) Mechanical stress on the package. Automotive qualification testing includes high-temperature operating life (HTOL) testing to verify long-term stability. For critical applications, periodic calibration may be recommended based on accuracy requirements and operating conditions.
For applications requiring guaranteed accuracy over extended periods, consider implementing periodic calibration or selecting sensors with tighter stability specifications.