SKU: SENS-1995
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Bosch BMP581 Pressure Sensor, 300~1250 hPa, Ultra-Low Noise, I²C/SPI Interface

₹419.00 (Inclusive of all taxes)
Out of Stock

The Bosch BMP581 is a high-precision, ultra-low noise MEMS barometric pressure sensor in a compact 2.0 x 2.0 mm LGA package. It provides accurate pressure and temperature data via I²C or SPI interfaces, making it ideal for drones, altimeters, and high-end IoT weather sensing applications requiring low power consumption.

Features

  • Ultra-low noise performance: as low as 0.08 Pa RMS in high-resolution mode.
  • High absolute pressure accuracy: ±0.5 hPa (±50 Pa) across a wide 300–1250 hPa range.
  • Dual digital interface support for flexible integration: I²C and SPI.
  • Compact 10-pin LGA package (2.0 x 2.0 mm) with low power consumption.
  • Wide operating temperature range from -40°C to +85°C for harsh environments.

Out of stock

Description

The Bosch BMP581 is a state-of-the-art MEMS digital barometric pressure sensor engineered for applications demanding exceptional precision and signal stability. It utilizes advanced on-chip linearization and temperature compensation algorithms to deliver highly accurate pressure and temperature readings, minimizing the need for external calibration.

Operating from a supply voltage of 1.71V to 3.6V, it is compatible with modern low-power microcontrollers and system-on-chips (SoCs). Its robust design ensures reliable performance across a broad temperature spectrum, making it suitable for challenging environmental conditions in industrial, aerospace, and outdoor IoT deployments.

Key Features

  • Ultra-Low Noise Floor: Achieves an exceptionally low noise level of 0.08 Pa RMS in high-resolution mode, enabling detection of minute pressure changes.
  • High Precision Sensing: Delivers an absolute accuracy of ±0.5 hPa and a relative accuracy of ±6 Pa (700–1100 hPa) for reliable altitude tracking and weather forecasting.
  • Flexible Digital Communication: Supports both I²C (up to 3.4 MHz) and SPI (up to 10 MHz) serial interfaces for seamless integration with Arduino, Raspberry Pi, ESP32, STM32, and industrial PLCs.
  • Optimized Power Profile: Features multiple power modes, including a low-power mode with noise performance of 0.78–0.95 Pa RMS, balancing accuracy with energy efficiency.
  • High Data Rate Capability: Offers an output data rate configurable up to 480 Hz for dynamic applications like drone flight control and vibration analysis.
  • Excellent Long-Term Stability: Exhibits minimal long-term drift of ±10 Pa per year and a short-term drift of ±1.5 Pa, ensuring consistent measurements over time.
  • Compact Footprint: Housed in a miniature 10-pin LGA package measuring just 2.0 x 2.0 mm, saving valuable PCB space in compact designs.
  • Wide Operational Envelope: Functions reliably from -40°C to +85°C, suitable for automotive, industrial, and outdoor environmental monitoring systems.

Applications

  • Drone & UAV Altitude Hold & Navigation: Provides precise altitude data for stable flight control and terrain following.
  • Industrial Altimeters & Weather Stations: Enables accurate atmospheric pressure measurement for meteorological forecasting and environmental monitoring.
  • Indoor Navigation & Floor Detection: Facilitates altitude-based floor-level determination in smartphones and IoT asset trackers.
  • HVAC & Building Automation: Monitors barometric pressure for airflow control and energy efficiency optimization in smart buildings.
  • Wearable Health & Sports Devices: Tracks elevation gain and activity altitude in fitness monitors and smartwatches.

Technical Specifications

Pressure TypeAbsolute
Pressure Range300 hPa to 1250 hPa (30–125 kPa)
Absolute Accuracy±0.5 hPa (±50 Pa)
Relative Accuracy (700–1100 hPa)±6 Pa
Pressure Resolution1/64 Pa
Noise (High-Res Mode)0.08 Pa RMS
Noise (Low-Power Mode)0.78 – 0.95 Pa RMS
Long-Term Drift±10 Pa/year
Temperature Range-40°C to +85°C
Temperature Accuracy±0.5°C
Output Data Rate (ODR)Up to 480 Hz
Supply Voltage (VDD)1.71V – 3.6V
I/O Voltage (VDDIO)1.08V – 3.6V
Digital InterfaceI²C, SPI
Package Type10-pin LGA
Package Dimensions2.0 x 2.0 mm
Sensor TechnologyMEMS Piezoresistive

Frequently Asked Questions

What is the supply voltage range for the BMP581 sensor?

The BMP581 operates from a core supply voltage (VDD) of 1.71V to 3.6V. Its digital I/O pins (VDDIO) can be powered from 1.08V to 3.6V, allowing flexible interfacing with both 3.3V and 1.8V logic microcontrollers like ESP32, STM32, and Raspberry Pi.

How do I communicate with the BMP581 sensor?

The BMP581 supports both I²C (up to 3.4 MHz) and SPI (up to 10 MHz) digital communication protocols. You can select the interface via hardware configuration. The sensor's library and datasheet provide detailed register maps and command structures for data reading and configuration.

What is the difference between absolute and relative accuracy specifications?

Absolute accuracy (±0.5 hPa) refers to the sensor's error across its entire specified pressure range (300–1250 hPa). Relative accuracy (±6 Pa) is a higher-precision specification valid within a narrower, commonly used pressure band (700–1100 hPa), which is critical for precise altitude tracking applications.

Is the BMP581 suitable for high-vibration environments like drones?

Yes. The BMP581's MEMS piezoresistive sensing element and advanced signal conditioning are designed to maintain stability. Its high output data rate (up to 480 Hz) allows it to filter out high-frequency vibrations, making it well-suited for drone flight controllers and dynamic mobile platforms.

Does the sensor require calibration before use?

The BMP581 is factory-calibrated and features on-chip temperature compensation, providing accurate readings out-of-the-box. For applications demanding the highest possible precision, a one-point offset calibration can be performed to account for local atmospheric conditions, but it is not strictly necessary for most uses.

Package Includes

  • 1 x Bosch BMP581 Pressure Sensor Module

Additional Information

Weight 0.003 kg
Dimensions 2 × 2 cm