The company claims that these are the only accelerometers with vibration-filtering properties and tilt-switch capability. The family can be used for tip-over detection in vehicles and includes four new sensors, the MXD6240 and 41AU, MXC6244AU, MXC6245XU.
The 624x family uses Memsic’s proprietary thermal accelerometer to sense acceleration instead of a mechanical beam structure. As a result the transducer exhibits an inherent low-pass frequency response with virtually no mechanical resonance. This makes the devices suitable for high vibration environments, where competing sensor solutions can exhibit false readings or other errors due to resonance.
The MXD6240 and MXD6241AU are autonomous inclination sensors with 8 built-in, pin-programmable tip-over angle thresholds from 40 to 70 degrees making them ideal for tip-over applications where no microcontroller is available.
The MXC6244AU and MXC6245XU are complete 2 axis I2C interface accelerometers each with 1 mg of resolution. The MXC6244AU is ±8g full scale range device. It includes the internal anti-vibration filter and the 8 angle thresholds programmable through the I2C interface.
The MXC6245XU is a ±2g full-scale range device and is targeted at cost sensitive applications not requiring the programmable anti-vibration filter or the 8 programmable tip-over angle thresholds. It offers 12 bits of resolution (1 mg) and has the same outstanding over temperature bias performance of typically 0.1 mg/C.
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