TE Connectivity MS5540C
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.FEATURES
● Resolution 0.1 mbar● Supply voltage 2.2 V to 3.6 V
● Low supply current < 5 µA
● Standby current < 0.1 µA
● -40°C to +85°C operation temperature
● No external components required
APPLICATIONS
● Mobile altimeter / barometer systems● Weather control systems
● Adventure or multi-mode watches
● GPS receivers BLOCK DIAGRAM SENSOR +IN -IN Input MUX ADC dig. Filter Digital Interface VDD MCLK DIN DOUT SCLK SGND Sensor Interface IC Memory (PROM) 64 bits GND Fig. 1: Block diagram MS5540C SENSOR SOLUTIONS ///MS5540C 09/2015 Page 2 MS5540C Miniature Barometer Module PIN CONFIGURATION Pin Name Pin SCLK 1 GND 2 PV (1) 3 PEN (1) 4 VDD 5 MCLK 6 DIN 7 DOUT 8 Fig. 2: Pin configuration of MS5540C Type I G N I P I I O Function Serial data clock Ground Negative programming voltage Programming enable Positive supply voltage Master clock (32.768 kHz) Serial data input Serial data output NOTE 1) Pin 3 (PV) and Pin 4 (PEN) are only used by the manufacturer for calibration purposes and should not be connected.