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MS5803-02BA01

MS5803-02BA01

TE Connectivity (Measurement Specialties)
Lower-range (2 bar) variant in the same MS5803 family offering the same digital interfaces for applications requiring finer range at lower pressures.
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Overview

The MS5803-02BA01 is a high-resolution absolute pressure sensor optimized for altimeters and barometers with a measurement range of 10 to 2000 mbar. This 24-bit sensor module includes a high-linearity pressure sensor and an ultra-low power 24-bit Sigma-Delta ADC with internal factory-calibrated coefficients. It features a hermetically sealable design suitable for outdoor devices and provides both I2C and SPI interfaces for flexible system integration.

Why Choose This Part

This module requires no external components due to its internal oscillator and factory-stored 16-byte EEPROM calibration data. It offers fast conversion times down to 1ms and maintains high accuracy of +/-0.15kPa, ensuring reliable performance in variable thermal environments.

Applications

High-Precision Altimeters
Utilizes 24-bit resolution to achieve altitude measurements with a resolution of 20cm, ideal for handheld trekking computers.
Industrial Pressure Monitoring
Provides stable absolute pressure readings in industrial instrumentation with a wide supply voltage range of 1.8V to 3.6V.
Outdoor Weather Stations
The hermetically sealable package and excellent long-term stability make it suitable for exposed environmental monitoring equipment.
Bike Computers
Low power consumption of 1.4mA during conversion and 0.02uA standby current fits battery-powered mobile cycling devices.

Key Specifications

Output 24 b
Accuracy +/-0.022PSI (+/-0.15kPa)
Port Style No Port
Output Type I2C, SPI
Applications Board Mount
Mounting Type Surface Mount
Pressure Type Absolute
Package / Case 8-SMD Module
Maximum Pressure 145.04PSI (1000kPa)
Voltage - Supply 1.8V ~ 3.6V
Termination Style SMD (SMT) Tab
Operating Pressure 4.35PSI ~ 15.95PSI (30kPa ~ 110kPa)
Operating Temperature -40degC ~ 85degC

Getting Started

Interface the module via I2C or SPI by pulling the PS pin high or low respectively. Engineers should implement the 24-bit ADC read sequence followed by the PROM read to apply the factory calibration coefficients to the raw pressure and temperature data in software.

Also Consider

BME280 Bosch Sensortec - Integrated humidity, pressure, and temperature sensor in a smaller form factor for general consumer IoT.
MS5607-02BA TE Connectivity - A more compact 5x3mm footprint alternative with similar 24-bit resolution and altitude precision.
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