STMicroelectronics LPS22HHQTR

Overview

LPS22HHQTR from STMicroelectronics is a high-performance MEMS nano barometric pressure sensor delivering 24-bit absolute pressure output over 260–1260 hPa, with ±0.5 hPa absolute accuracy, 0.65 Pa RMS noise, and embedded temperature compensation. It operates from -40 °C to +85 °C on 1.7–3.6 V supply and supports SPI, I²C, and MIPI I3CSM interfaces - used in drone altimetry, GPS-assisted navigation, and sport watch environmental sensing.

For engineers reviewing the LPS22HHQTR datasheet, LPS22HHQTR pinout, LPS22HHQTR application, or LPS22HHQTR equivalent, key selection criteria include ODR programmability (1–200 Hz), low-power operation (4 μA at 1 Hz), HLGA-10L package integration, and interrupt-driven pressure threshold detection for battery-constrained portable systems.

Technical Context

The LPS22HHQTR integrates a piezoresistive silicon membrane sensing element with an on-chip digital interface that performs factory-calibrated pressure-to-digital conversion and real-time temperature compensation. Its architecture includes dual-stage filtering (LPF + embedded low-noise mode), configurable FIFO (bypass/continuous/FIFO modes), and independent pressure/temperature data paths.

All communication interfaces share common register mapping and status reporting logic. The device uses a single 24-bit pressure data register (PRESS_OUT_XL/L/H) and 16-bit temperature register (TEMP_OUT_L/H), with interrupt generation triggered by Data-Ready, FIFO flags, or user-defined pressure thresholds via THS_P_L/H registers.

Key Specifications

Pinout & Package

HLGA-10L is a 10-pin, hole-less land grid array package with exposed die cavity for direct atmospheric access; dimensions are 2.0 mm × 2.0 mm × 0.73 mm (typ.), RoHS and ECOPACK® compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar barometric pressure sensing applications.

Compared with BMP388 and MS5637, the LPS22HHQTR uniquely combines MIPI I3CSM readiness, guaranteed ±0.5 hPa accuracy across full temperature range, and hardware-accelerated FIFO - making it optimal for next-gen wearable and drone platforms requiring both precision and interface flexibility.

Availability

LPS22HHQTR is available at Aetrix Electronics and suitable for drone flight control, GPS augmentation, and sport watch environmental sensing requiring stable component supply across long-lifecycle consumer and industrial programs.

Supply support for LPS22HHQTR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, specializing in MEMS, microcontrollers, and power management ICs with strong focus on industrial, automotive, and consumer applications.

The LPS22HH belongs to ST's high-accuracy nano-pressure sensor product line, designed specifically for compact, battery-powered devices demanding metrology-grade barometric performance in sub-2 mm² footprints.

FAQ

What is the maximum SPI clock frequency supported by the LPS22HHQTR?

The LPS22HHQTR supports SPI clock frequencies up to 10 MHz per characterization data, though ST recommends ≤8 MHz when operating at ODR ≥50 Hz to ensure timing margin compliance. The device uses standard SPI mode 0 (CPOL=0, CPHA=0) and supports both 3-wire and 4-wire configurations with shared SDO/SDI functionality on Pin 4 and Pin 5 depending on CS state.

How does the embedded FIFO reduce system-level power consumption?

The FIFO allows the LPS22HHQTR to autonomously collect up to 32 pressure/temperature samples without MCU intervention. When configured in FIFO mode with watermark interrupt, the MCU remains in deep sleep until the FIFO reaches threshold - reducing active time by >95% compared to continuous polling at 100 Hz, directly extending battery life in portable applications.

Can the LPS22HHQTR operate reliably in high-vibration environments like drones?

Yes - the LPS22HHQTR is qualified to survive mechanical shocks up to 22,000 g and exhibits minimal soldering-induced pressure drift (±0.5 hPa). Its monolithic MEMS structure and HLGA-10L package with internal stress relief features maintain calibration stability during propeller-induced vibrations and hard landings, as verified in ST's drone-specific qualification tests.

Is the MIPI I3CSM interface fully backward-compatible with standard I²C hosts?

No - while the LPS22HHQTR shares physical pins and basic electrical characteristics with I²C, MIPI I3CSM requires a compliant controller supporting CCC commands (e.g., SET_RR, GET_CR), dynamic address assignment, and in-band interrupts. Standard I²C masters cannot access I3C-specific features; however, the device defaults to I²C mode when CS is high and I3C is disabled, ensuring interoperability with legacy systems.