The LPS22HHTR is a STMicroelectronics high-performance MEMS nano pressure sensor functioning as a digital output barometer. It measures absolute pressure from 260 to 1260 hPa with 0.5 hPa accuracy, 0.65 Pa RMS noise, and 24-bit output resolution. The device supports I2C, SPI, and MIPI I3C interfaces with embedded FIFO, and operates from 1.7 V to 3.6 V in a 10-pin HLGA (2×2 mm) package.<\/p>\n
| Pressure Range<\/td>\n | 260 to 1260 hPa<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||||||
| Accuracy<\/td>\n | 0.5 hPa absolute<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||||||
| Noise<\/td>\n | 0.65 Pa RMS<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||||||
| Resolution<\/td>\n | 24-bit<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||||||
| ODR<\/td>\n | 1 Hz to 200 Hz<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||||||
| \u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n | 1.7 V to 3.6 V<\/td>\n<\/tr>\n<\/table>\n\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n\u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\nProduct Overview The LPS22HHTR is a STMicroelectronics high-performance MEMS nano pressure sensor functioning as a digital output barometer. It measures absolute pressure from 260 to 1260 hPa with 0.5 hPa accuracy, 0.65 Pa RMS noise, and 24-bit output resolution. The device supports I2C, SPI, and MIPI I3C interfaces with embedded FIFO, and operates from 1.7 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[],"chip_brand":[142],"class_list":["post-8736","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-st"],"acf":{"brief_explanation":"260-1260hPa MEMS pressure sensor, 0.5hPa accuracy, I2C\/SPI, HLGA-10","date_code":"","package_case":"10-HLGA (2.00 x 2.00 x 0.73 mm)","in_stock":6500,"datasheet":"https:\/\/www.st.com\/en\/mems-and-sensors\/lps22hh.html","price":"$2.40 @ 1ku","product_introduction":"The STMicroelectronics LPS22HHTR is an ultra-compact piezoresistive absolute pressure sensor functioning as a digital-output barometer with 0.5 hPa absolute accuracy and 0.65 Pa RMS noise. The device measures absolute pressure from 260 hPa to 1260 hPa (equivalent to altitude range of approximately -5,000m to +10,000m above sea level) with 24-bit output resolution. The ultra-small 2.0 x 2.0 x 0.73 mm HLGA package is 70% smaller than competing pressure sensors, enabling integration into smartphones, wearables, and drones where PCB area is at a premium. The embedded temperature compensation and factory calibration ensure accurate pressure readings without user calibration\u2014the trimming values are stored in non-volatile memory and loaded automatically at power-on. The 128-slot FIFO buffer stores pressure and temperature data, allowing the host processor to remain in sleep mode until a batch of data is ready, reducing system power consumption. The configurable output data rate (1 Hz to 200 Hz) supports both slow weather-monitoring and fast altitude-tracking applications. Communication is via I2C (up to 400 kHz), SPI (up to 10 MHz), or MIPI I3C. The 22,000 g shock survivability ensures reliability in harsh mechanical environments such as drone crashes and industrial vibration.","working_principle":"The LPS22HH uses a silicon MEMS piezoresistive sensing element manufactured using ST's dedicated MEMS process. A suspended silicon membrane deflects under applied pressure, inducing an imbalance in a Wheatstone bridge of piezoresistive elements embedded in the membrane. The analog output of the bridge is amplified by a low-noise instrumentation amplifier and converted to digital by a 24-bit sigma-delta ADC. An internal temperature sensor simultaneously measures the die temperature, and the digital logic applies factory-calibrated temperature compensation coefficients to the raw pressure reading. The compensated 24-bit pressure data and 16-bit temperature data are stored in output registers accessible via I2C\/SPI. The FIFO buffer can store 128 samples of pressure and temperature data in six operating modes: bypass, FIFO, continuous (dynamic-stream), continuous-to-FIFO, bypass-to-continuous, and bypass-to-FIFO\u2014enabling sophisticated data capture scenarios such as triggered burst recording. The programmable interrupt generator can assert the INT_DRDY pin on data-ready, FIFO threshold, or pressure threshold crossing events, enabling event-driven architectures that minimize host processor wake-ups.","pin_description":"
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