LIS2DTW12 is a low noise accelerometer with an integrated temperature sensor. Free Technical Library News

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LIS2DTW12 - low noise accelerometer with integrated temperature sensor

28.04.2019

The LIS2DTW12 is a 2-axis accelerometer and temperature sensor from STMicroelectronics, belonging to the LIS2Dxx MEMS sensors of the femto family. The LIS12DTWXNUMX is built on the proven and mature manufacturing processes already used to manufacture micromachined accelerometers.

The MEMS sensor has user-selectable full scales of +-2g/+-4g/+-8g/+-16g and is capable of measuring accelerations at sampling rates (ODR) from 1,6 Hz to 1600 Hz. The LIS2DTW12 contains a built-in temperature sensor with 8 to 12 bit resolution, typical accuracy of 0,8°C, and an ODR ranging from 50 to 1,6 Hz. The sensor has a built-in 32-level first-in-first-out (FIFO) buffer that allows the user to accumulate data to reduce the load on the host processor.

The built-in mechanical self-test functionality allows the user to test the functionality of the sensor in the end application. The device has a special internal mechanism to process accelerations in 3 axes to detect certain conditions - given acceleration, including free fall, start of movement, single or double click recognition, activity detection and 6D/4D orientation.

The LIS2DTW12 is available in a miniature 2x2mm (LGA) package and is guaranteed to operate over an extended temperature range of -40 to +85°C.

LIS2DTW12 features:

ultra-low power: 50 nA in low power mode, less than 1 µA in active low power mode;
very low noise level: up to 1,3 mg RMS in low power mode;
built-in temperature sensor 0,8°C (typ. accuracy);
several modes of operation with different bandwidths;
supply voltage from 1,62 to 3,6 V;
high speed I?C/SPI digital output interface;
single data transformation on demand;
16-bit accelerometer data output;
12-bit temperature data output.

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