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MS5540B Altimeter/Barometer Module
 
Features
- Integrated pressure sensor
- Pressure range 10-1100 mbar
- Small size 6.2 x 6.4 mm
- 15 Bit ADC
- 6 coefficients for a software
compensation stored on-chip
- 3-wire serial interface
- 1 system clock line (32.768 kHz)
- Temperature range -40..+85°C
- Low voltage (2.2 to 3.6V)
- Low power (Standby current:0.1uA)
- Pb-free & RoHS-compatible
Applications
- Mobile altimeter/barometer systems
- Weather control systems
- Adventure or multi-mode watches
- GPS receivers
Description
The MS5540B is a SMD-hybrid device including a precision piezoresistive pressure sensor and an ADCInterface
IC. It is a miniature version of the MS5534B barometer/altimeter module and provides a 16 Bit data
word from a pressure and temperature dependent voltage. MS5540B is a low power, low voltage device with
automatic power down (ON/OFF) switching. A 3-wire interface is used for all communications with a microcontroller.
Compared to MS5534A the pressure range (measurement down to 10 mbar) has been improved. Other
improvements concern the ESD sensitivity, current consumption and converter accuracy. The MS5540B is fully
software compatible to the MS5534A and MS5534B. In addition, the MS5540B is from its outer dimensions
compatible to the MS54XX series of pressure sensors. The gel protection of the sensor provides a water
protection sufficient for 100 m waterproof watches without any additional protection.
Datasheet
 ms5540b.pdf Full datasheet in Acrobat PDF. (281 kB), Updated Jan 31, 2008, V8
Application notes
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an501.pdf |
Using MS5534 for altimeters and barometers |
(280 kB), Updated Jan 3, 2006 |
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an501_fr.pdf |
Utilisation du MS5534 pour altimètres et baromètres (FRENCH) |
(281 kB), Updated Jan 3, 2006 |
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an808.pdf |
Soldering of sensors |
(296 kB), Updated Dec 20, 2005 |
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flytec_heightcorrection.pdf |
Höhenkorrektur bei Höhenmessern (GERMAN) |
(3455 kB), Updated Jun 21, 2002 |
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an510.pdf |
Using SPI protocol with pressure sensor modules |
(156 kB), Updated Nov 09, 2005 |
Related software & tools
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Atmosphere |
Atmosphere Simulator provided by NASA (html page) |
 Printable version
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