MS5540C Barometric Pressure Sensor Module

The MS5540C is a SMD-hybrid device including a precision piezoresistive pressure sensor and an ADC-Interface IC. The MS5540C HE is the high endurance version of MS5540C sensor.

It is a miniature version of the MS5534C barometer/altimeter module and provides a 16 Bit data word from a pressure and temperature dependent voltage. 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 and previous versions of MS5540. In addition, the MS5540C is from its outer dimensions compatible to the MS54XX series of pressure sensors. Compared to the previous version the ESD sensitivity level has been improved to 4kV on all pins. The gel protection of the sensor provides a water protection sufficient for 100 m waterproof watches without any additional protection. 

Application:
Mobile altimeter / barometer systems

Weather control systems

Adventure or multi-mode watches

GPS receivers

High endurance pad technology (HE version)

Features:
Operating temperature range: -40 ° C ~ 85 ° C

Absolute pressure range: 10 - 1100 mbar

Temperature range: -40 ° C ~ 85 ° C

Resolution 0.1 mbar and 0.01 °C

Accuracy: -2 to 5 mbar ±2 °C

Response time: 35ms

Chip storage 6 parameters for software compensation

Piezoresistive silicon microsensor

Integrated miniature pressure sensor 6.2x6.4 mm

16-bit ADC, SPI3 line serial interface 500KHz

1 system clock (32.768 kHz)

Operating voltage: 2.2 V to 3.6 V

Working current: < 5uA

RoHS: Compatible & Pb-free

Working temperature: -40 ° C ~ +85 ° C

Waterproof, maximum water depth 100 meters (ISO2281)