LPS22HH - MEMS Pressure Sensor, 260-1260 hPa | STMicroelectronics
MPN: LPS22HH ✓ نشطLPS22HH نظرة عامة
A pressure sensor is a device that measures the force exerted by a fluid (liquid or gas) per unit area, converting it into an electrical signal. The LPS22HH is an absolute pressure sensor, meaning it measures pressure relative to a perfect vacuum. It belongs to the family of MEMS (Micro-Electro-Mechanical Systems) sensors, which integrate mechanical and electrical components on a microscopic scale. In the broader hierarchy, it is a pressure sensor -> MEMS sensor -> sensor -> electronic component, commonly used in environmental monitoring and altitude sensing.
Key features include an absolute pressure range of 260 to 1260 hPa, a resolution of 0.02 hPa (RMS), and an accuracy of ±0.1 hPa (typical) at 25°C. The sensor operates from a supply voltage of 1.7V to 3.6V, with a low power consumption of 12 µA at 1 Hz output data rate. It supports output data rates from 1 Hz to 200 Hz, and includes an integrated temperature sensor with ±0.5°C accuracy. The device is RoHS compliant and operates over a temperature range of -40°C to +85°C.
The LPS22HH uses a capacitive sensing element with a precision analog front-end and a 24-bit sigma-delta ADC, providing high-resolution digital output. The sensor includes a FIFO buffer (up to 100 samples) to reduce host processor load, and supports interrupt generation for data-ready and threshold events. The I2C address is 0x5C (default) or 0x5D (alternate), selectable via the SA0 pin.
Typical applications include barometric altimeters in drones and wearables, weather stations, and indoor navigation systems. Its low power and small size make it ideal for battery-powered IoT devices. The sensor is also used in smartphone and smartwatch for elevation tracking and stair climbing detection.
When designing with the LPS22HH, ensure proper PCB layout with a small vent hole to expose the sensing element to ambient pressure. Avoid placing the sensor near heat sources to minimize temperature-induced errors. Use the built-in FIFO to reduce I2C/SPI traffic and power consumption in low-power applications.
بدائل مباشرة لـ LPS22HH — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع LPS22HH (نفس عامل الشكل والبصمة) — يختلف في Current Consumption, Package, Output Data Rate, Interface, Supply Voltage.
LPS22HBTR
تواصل لمعرفة السعر
عرض ورقة البيانات ←LPS22HH-QST
📋 بديل مرجعي (غير موجود في الكتالوج)
BMP388
📋 بديل مرجعي (غير موجود في الكتالوج)
BMP390
📋 بديل مرجعي (غير موجود في الكتالوج)
MS5637
📋 بديل مرجعي (غير موجود في الكتالوج)
LPS22HH الحدود القصوى والخصائص الكهربائية
| Pressure Range | 260 to 1260 hPa |
| الدقة | 0.02 hPa (RMS) |
| Accuracy | ±0.1 hPa (typical) at 25°C |
| جهد التغذية | 1.7V to 3.6V |
| Current Consumption | 12 µA at 1 Hz ODR |
| Output Data Rate | 1 Hz to 200 Hz |
| الواجهة | I2C and SPI |
| I2C Address | 0x5C (default) or 0x5D (alternate) |
| FIFO Size | 100 samples |
| Temperature Sensor Accuracy | ±0.5°C |
| درجة حرارة التشغيل | -40°C to +85°C |
| العلبة | HLGA 2.0 x 2.0 x 0.7 mm |
| نوع التركيب | Surface Mount |
| حالة RoHS | Compliant |
| نوع الخرج | Digital (24-bit) |
تكوين أطراف LPS22HH
| دبوس 1 | VDD — Power supply (1.7V to 3.6V) |
| دبوس 2 | GND — Ground |
| دبوس 3 | SCL/SPC — I2C clock or SPI clock |
| دبوس 4 | SDA/SDI — I2C data or SPI data in |
| دبوس 5 | SA0/SDO — I2C address select or SPI data out |
| دبوس 6 | CS — Chip select (active low) |
| دبوس 7 | INT — Interrupt output |
| دبوس 8 | NC — No connect |
التطبيقات النموذجية
LPS22HH مناسب لـ 6 التطبيقs: Barometric Altimeter, Weather Station, Indoor Navigation, Wearable Fitness Tracker, Smart Home IoT, Smartphone Altimeter.
Barometric Altimeter
The LPS22HH's high resolution (0.02 hPa) enables precise altitude detection in drones and wearables. In a drone, the sensor is mounted on the flight controller PCB with a vent hole to ambient pressure. The I2C interface connects to the MCU, and the FIFO buffer reduces host polling. Compared to GPS, the barometric altimeter provides faster and more accurate vertical speed estimation, essential for stable hovering and landing. The low power consumption (12 µA) extends flight time, and the small package fits compact drone frames.
موصى به
Weather Station
The LPS22HH provides accurate atmospheric pressure measurements (±0.1 hPa) for weather monitoring. In a weather station, the sensor is placed in a ventilated enclosure to avoid wind and rain. The SPI interface connects to a data logger, and the temperature sensor (accuracy ±0.5°C) provides compensation. The wide pressure range (260-1260 hPa) covers all global atmospheric conditions. The sensor's low power allows battery-powered remote stations, and the FIFO stores data between transmissions.
موصى به
Indoor Navigation
The LPS22HH enables floor-level detection in indoor navigation systems. By measuring pressure changes, the sensor can detect floor changes of approximately 0.17 m, which is sufficient for most buildings. In a smartphone, the sensor is integrated with the IMU and uses sensor fusion algorithms to improve positioning accuracy. The I2C interface and small package allow easy integration. The low power consumption is critical for continuous operation in mobile devices.
موصى به
Wearable Fitness Tracker
The LPS22HH is used in fitness trackers to count stairs climbed and monitor elevation changes. Its small size (2.0x2.0x0.7 mm) and low power (12 µA) are ideal for battery-powered wearables. The sensor is placed on the wrist, and the pressure data is processed by the MCU to detect stair climbing events. The FIFO buffer reduces host wake-ups, extending battery life. The temperature sensor provides additional environmental data.
موصى به
Smart Home IoT
The LPS22HH enables smart home devices to detect window/door opening and HVAC filter clogging. In a smart thermostat, the sensor monitors pressure changes to detect air filter blockage. The I2C interface connects to a low-power MCU, and the sensor operates in low-power mode with periodic wake-ups. The small package allows integration into compact devices. The wide supply voltage range (1.7-3.6V) supports battery operation.
موصى به
Smartphone Altimeter
The LPS22HH is used in smartphones for elevation tracking and emergency location. It provides accurate altitude data for E911 calls and fitness apps. The sensor is integrated into the phone's main board, with a small vent hole in the casing. The I2C interface and low power consumption are essential for continuous operation. The high resolution (0.02 hPa) enables stair climbing detection and floor-level navigation.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ LPS22HH — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | LPS22HB | BMP388 | BMP390 | MS5637 |
|---|---|---|---|---|---|
| Package | HLGA 2.0x2.0x0.7 mm | HLGA 2.0x2.0x0.7 mm | LGA 2.0x2.0x0.8 mm | LGA 2.0x2.0x0.8 mm | QFN 3.0x3.0x0.9 mm |
| Brand | STMicroelectronics | STMicroelectronics | Bosch Sensortec | Bosch Sensortec | TE Connectivity |
| Pressure Range | 260-1260 hPa | 260-1260 hPa | 300-1250 hPa | 300-1250 hPa | 10-1200 hPa |
| Resolution | 0.02 hPa | 0.01 hPa | 0.03 hPa | 0.03 hPa | 0.016 hPa |
| Accuracy | ±0.1 hPa | ±0.1 hPa | ±0.5 hPa | ±0.5 hPa | ±0.5 hPa |
| Supply Voltage | 1.7V-3.6V | 1.7V-3.6V | 1.7V-3.6V | 1.7V-3.6V | 1.7V-3.6V |
| Current Consumption | 12 µA at 1 Hz | 15 µA at 1 Hz | 3.4 µA at 1 Hz | 3.4 µA at 1 Hz | 1 µA at 1 Hz |
| Interface | I2C/SPI | I2C/SPI | I2C/SPI | I2C/SPI | I2C |
أبرز الفروقات
- Higher resolution than LPS22HB (مقابلLPS22HB)
- Lower power consumption than LPS22HB (مقابلLPS22HB)
- Wider pressure range than BMP388 (مقابلBMP388)
ملاحظات التصميم
Ensure a vent hole (typically 0.5 mm) is placed in the PCB directly under the sensor's pressure port to allow ambient air to reach the sensing element. The vent hole should be protected with a mesh or membrane to prevent dust and water ingress. Place the sensor away from heat sources and high-airflow areas to minimize pressure and temperature errors.
Decouple the VDD pin with a 100 nF ceramic capacitor placed as close as possible to the sensor. For noisy power rails, add a 1 µF capacitor in parallel. The LPS22HH operates from 1.7V to 3.6V, so ensure the supply voltage is within this range under all load conditions. Use a low-noise LDO if the supply is noisy.
Do not cover the vent hole with solder mask or conformal coating, as this will block pressure sensing. Also, avoid placing the sensor near vibrating components, as mechanical stress can affect readings. When using I2C, ensure the bus speed does not exceed 400 kHz (standard mode) or 1 MHz (fast mode plus) as specified in the datasheet.
معلومات الامتثال
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified.
