MS5540-CM TE Connectivity

MS5540C Miniature Barometer Module SPECIFICATIONS 10 - 1100 mbar absolute pressure range 6 coefficients for software compensation stored on-chip Piezoresistive silicon micromachined sensor Integrated miniature pressure sensor 6.2 x 6.4 mm 16 Bit ADC 3-wire serial interface 1 system clock line (32.768 kHz) Low voltage and low power consumption The MS5540C is a SMD-hybrid device including a precision piezoresistive pressure sensor and an ADC-Interface IC. 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 micro-controller. 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. SENSOR SOLUTIONS ///MS5540C Page 1 09/2015 MS5540C Miniature Barometer Module FEATURES Resolution 0.1 mbar Supply voltage 2.2 V to 3.6 V Low supply current < 5 A Standby current < 0.1 A -40C to +85C operation temperature No external components required APPLICATIONS Mobile altimeter / barometer systems Weather control systems Adventure or multi-mode watches GPS receivers BLOCK DIAGRAM VDD MCLK Input MUX +IN Digital SENSOR DIN Interface DOUT dig. ADC Filter -IN SCLK Memory Sensor (PROM) Interface IC 64 bits SGND GND Fig. 1: Block diagram MS5540C 09/2015 SENSOR SOLUTIONS ///MS5540C Page 2