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E-mail:jl.dong@mtmems.com
Address:No.1, Meitai Road, Luquan District, Shijiazhuang City
Triaxial micro-accelerometer
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Product Classification:
Product Introduction
The MSA270 triaxial micro-accelerometer is a single-device, integrated triaxial micro-accelerometer designed for use in automotive airbag controllers, transmission systems, under-passenger seats, or in the luggage compartment. It can simultaneously measure acceleration in three orthogonal directions. Developed in accordance with the ISO 26262 standard, this accelerometer is suitable for system applications targeting safety levels ASIL B and can also be used in systems up to ASIL D, fully complying with decomposition rules as well as all necessary requirements and analyses. The accelerometer provides acceleration and angular rate signals via a digital interface (safeSPI).
Performance metrics
| Accelerometer | System | ||||
| Measurement range | ±2 to ±16 | g | Supply voltage | 3.3V ± 0.17 | V |
| Scale factor (16g) | 2000 | LSB/g | Operating current | 5 | mA |
| Scale factor nonlinearity (±16g) | ±0.5 | % | Operating temperature range | -40~+125 | Celsius |
| Zero bias | ≤35 | mg | Shock-resistant | ≥2000 | g |
| Zero-bias temperature sensitivity (after temperature compensation) | 2 | mg | Size | 5 × 5 × 1.45 | mm |
| Zero-bias temperature hysteresis | 0.5 | mg | Weight | To be determined | g |
| Noise (50Hz/400Hz) | 2/6 | mg RMS | Interface Type | SPI | -- |
| Bandwidth (Filter 1) | 100~400 | Hertz | |||
| Bandwidth (filter) | 25~100 | Hertz | |||
Application areas
●Level 2 Automated Driving
● Location-based application
● Advanced Driver Assistance Systems (ADAS) features
Main dimensions and interface definitions
| Pin | Definition | Instructions |
| 1 | CSB | Chip Select Bar |
| 2 | SCK | SPI serial clock |
| 3 | MOSI | SPI serial data input |
| 4 | MISO | SPI serial data output |
| 5 | NC | No Connection |
| 6 | Reset | External Reset Signal, Low Active |
| 7 | BUS_ID_1 | BUS ID1 for Sensor Identification |
| 8 | BUS_ID_0 | BUS ID0 for Sensor Identification |
| 9 | NC | No Connection |
| 10 | NC | No Connection |
| 11 | NC | No Connection |
| 12 | NC | No Connection |
| 13 | GND | Ground |
| 14 | VDD | Power Supply (+3.3V) |
| 15 | DGND | Digital Ground |
| 16 | VDD10 | Chip Digital I/O Supply |
| Note: The NC pin remains floating. | ||
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No.1, Meitai Road, Luquan District, Shijiazhuang City