LIS2DTW12TR
Accelerometers MEMS
Digital Output Dual
Motion and Temperature
Sensor
• Ultra-low power consumption: 50nA in
power-down mode, below 1μA in active
low-power mode
• Very low noise:
Down to 1.3mg
RMS in low-power
mode
• 0.8°C (typ. accuracy)
embedded temperature sensor
LEARN MOREu
LPS33HW Pressure
Sensor
• 260 to 1260hPa absolute pressure range
with water-resistant package
• Current consumption down to 3μA
• High overpressure capability of 20x full
scale with embedded temperature
compensation
LEARN MOREu
One of the critical parameters is the sensitivity that is a
crucial factor in determining the signal-to-noise ratio of
a microphone. The sensitivity of the device, the Acoustic
Overload Point (AOP), size, etc. depends on the design of
the membrane. For example, a 4-point membrane anchor
design used by ST provides high sensitivity while minimizing
the sensor size.
There are several advantages of MEMS microphones over
the ECM (Electret Condenser Microphones), among oth-
ers, mechanical robustness, excellent sensitivity matching
from unit to unit, and very little change in sensitivity over
temperature providing very high-temperature stability that
is critical for many applications (Figure 12).
23 23
ST/Industrial Sensing Solutions
Figure 11: Popular applications of the latest MEMS-based humidity sensors.
Figure 12: Working principle of a capacitive MEMS microphone.
