BMP581

Absolute Barometric Pressure Sensor

The BMP581 is a absolute barometric pressure sensor from Bosch Sensortec. View the full BMP581 datasheet below including key specifications.

Manufacturer

Bosch Sensortec

Key Specifications

Parameter	Value
Accuracy	±0.01PSI (±0.05kPa)
Mounting Type	Surface Mount
Operating Pressure	4.35PSI ~ 18.13PSI (30kPa ~ 125kPa)
Operating Pressure	4.35PSI ~ 18.13PSI (30kPa ~ 125kPa)
Operating Temperature	-40°C ~ 85°C
Output Type	I2C, SPI
Package / Case	10-WFLGA
Port Style	No Port
Port Style	No Port
Pressure Type	Absolute
Pressure Type	Absolute
Supplier Device Package	10-LGA (2x2)
Supplier Device Package	10-LGA (2x2)
Supply Voltage	1.65V ~ 3.6V

Overview

Part: BMP581 Barometric Pressure Sensor — Bosch Sensortec

Type: Absolute Barometric Pressure Sensor

Description: Absolute barometric pressure sensor with 30–125 kPa operating range, -40–85°C temperature range, ultra-low noise (< 0.1 PaRMS), and 1.3 μA current consumption at 1Hz in low power mode.

Operating Conditions:

Supply voltage: VDD 1.71 V ... 3.6 V and VDDIO 1.08 V ... 3.6 V
Operating temperature: -40 .. 85°C
Pressure operating range: 30 .. 125 kPa
Output data rates: up to 480 Hz (CONTINUOUS mode), 0.125 .. 240 Hz (NORMAL mode)

Key Specs:

Pressure operating range: 30 .. 125 kPa
Temperature operating range: -40 .. 85°C
Ultra low noise: < 0.1 PaRMS natively
Current consumption: 1.3 μA 1Hz in low power mode
Absolute pressure accuracy: ± 0.5 hPa (max)
Relative pressure accuracy: 0.06 hPa per 10kPa step
Pressure Temperature-induced offset: ± 0.5 Pa/K
Digital interface: 12 MHz slave SPI (4-wire, 3-wire), 12.5MHz I3C, up to 1MHz I²C (Fm+)

Features:

On-chip linearization and temperature-compensation
Programmable low-pass filtering
On-chip FIFO buffer for up to 32 pressure samples
Programmable interrupts, including pressure-changed detection
6 bytes user programmable non-volatile memory
RoHS compliant, halogen and lead free

Applications:

Enhancement of GPS navigation
Indoor navigation (floor detection, elevator detection)
Outdoor navigation
Sports applications like calorie counting, fitness activity identification
Emergency caller location
Weather forecast
Vertical velocity indication
Altitude control of drones and flying toys

Package:

10-pin metal-lid LGA package (2.0 × 2.0 mm2 footprint, max 0.8 mm height)

Features

Pressure operating range: 30 .. 125 kPa

Temperature operating range: -40 .. 85°C

Ultra low noise and current consumption:

Ultra low noise: < 0.1PaRMS natively (without low-pass filter enabled)
1.3 μA 1Hz in low power mode

Absolute pressure accuracy: ± 0.5 hPa (max)

Relative pressure accuracy: 0.06 hPa per 10kPa step

Pressure Temperature-induced offset: ± 0.5 Pa/K

BMP581 provides true absolute pressure and temperature, due to on-chip linearization and temperaturecompensation

Primary digital interface with 12 MHz slave SPI (4-wire, 3-wire), 12.5MHz I3C and up to 1MHz I²C (Fm+)

Applications

Enhancement of GPS navigation (e.g. time-to-first-fix improvement, dead-reckoning, slope detection)

Indoor navigation (floor detection, elevator detection)

Outdoor navigation

Sports applications like calorie counting, fitness activity identification

Emergency caller location

Weather forecast

Vertical velocity indication (e.g. rise/sink speed)

Altitude control of drones and flying toys

Pin Configuration

The behavior of the interrupt pin can be configured in INT_CONFIG with these fields:

int_mode: The interrupt mode can be 'pulsed' or 'latched'. Latching determines when an interrupt is released (see Chapter 3.7.3.2 for details)

int_pol: The interrupt polarity can be configured to be either 'active high' or 'active low'

int_od: The interrupt pin can be configured to be 'open-drain' or push-pull'
int_en: The interrupt pin can be enabled. With enabled interrupt pin, all interrupt sources configured in INT_-SOURCE will be ORed on the interrupt pin.

Typical Application