325540009-50

325540009-50 is a MS5540-C miniature barometer module. The MS5540C is a SMD-hybrid device including a precision piezoresistive pressure sensor and an ADC-Interface IC. MS5540C 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. The MS5540C is fully software compatible to the MS5534C. In addition, the MS5540C 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 100m waterproof watches without any additional protection. Typical applications include mobile altimeter / barometer systems, weather control systems, adventure or multi-mode watches and GPS receivers.

• 10 to 1100mbar absolute pressure range
• 6 coefficients for software compensation stored on chip
• Piezoresistive silicon micromachined sensor
• Integrated miniature pressure sensor
• 16bit ADC
• 3-wire serial interface
• System clock line (32.768KHz)
• Low voltage and low power consumption