LPS25HTR High Pressure Sensor Module High Precision ST Temperature Compensation CJMCU-25 MEMS

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The CJMCU-25 is a miniature sensor with MEMS technology that integrates advanced features (temperature compensation, auto-zeroing). The LPS25H has a very low operating current of only 4 uA, which greatly extends battery life; ultra-low noise design results in sensor accuracy of ±0.2 mbar

Features:

260 to 1260 hPa absolute pressure range
High-resolution mode: 1 Pa RMS
Low power consumption:
– Low resolution mode: 4 μA
– High resolution mode: 25 μA
High overpressure capability: 20x full scale
Embedded temperature compensation
Embedded 24-bit ADC
Selectable ODR from 1 Hz to 25 Hz
SPI and I2C interfaces
Embedded FIFO
Supply voltage: 1.7 to 3.6 V
High shock survivability: 10,000 g
Small and thin package
ECOPACK® lead-free compliant


The CJMCU-25 integrates MEMS sensing units and IC interface circuits in the same package. The function of the sensing unit is to measure the absolute pressure. The main components include a suspended film made on a single crystal silicon substrate and a native mechanical stop that prevents the film from breaking.

The IC interface chip uses a standard CMOS manufacturing process to achieve high integration and accurately adjust the interface circuit to match the characteristics of the sensing unit. The temperature compensation algorithm uses a quadratic correction to achieve the best accuracy of its class over a wide temperature range, independent of temperature changes. By integrating a data storage FIFO (First-In First-Out memory) and supporting user-controlled thresholds and interrupts, the LPS25H simplifies software design by minimizing the need for system resources.
Designers using the LPS25H can take advantage of ST's extensive MEMS expertise and development ecosystem, including the LPS25H pressure sensor evaluation kit and a dedicated adapter board (STEVAL-MKI142V1) that connects to the STEVAL-MKI109V2 motherboard.

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