MS5534-CM

* MS5534C (RoHS ) BAROMETER MODULE 10 - 1100 mbar absolute pressure range 6 coefficients for software compensation stored on-chip Piezoresistive silicon micromachined sensor Integrated miniature pressure sensor 9 x 9 mm 16 Bit ADC 3-wire serial interface 1 system clock line (32.768 kHz) Low voltage and low power consumption * RoHS-compatible & Pb-free DESCRIPTION The MS5534C is a SMD-hybrid device including a piezoresistive pressure sensor and an ADC-Interface IC. It provides a 16 Bit data word from a pressure and temperature dependent voltage. Additionally the module contains 6 readable coefficients for a highly accurate software calibration of the sensor. MS5534C 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. The MS5534C is fully software compatible to the previous versions (MS5534A and MS5534B). Compared to the previous versions the ESD sensitivity level has been improved to 4kV on all pins. FEATURES APPLICATIONS Supply voltage 2.2 V to 3.6 V Mobile altimeter / barometer systems Low supply current Weather control systems -40C to +125C operation temperature Adventure or multi-mode watches No external components required 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 MS5534C. * The European RoHS directive 2002/95/EC (Restriction of the use of certain Hazardous Substances in electrical and electronic equipment) bans the use of lead, mercury, cadmium, hexavalent chromium and polybrominated biphenyls (PBB) or polybrominated diphenyl ethers (PBDE). DA5534C_003.doc June 16th, 2008 1 0005534C1175 ECN1118 PIN CONFIGURATION Fig. 2: Pin configuration of MS5534CM. Pin Name Pin Type Function GND 1 G Ground SCLK 2 I Serial data clock DOUT 3 O Data output DIN 4 I Data input MCLK 5 I Master clock (32.768 kHz) VDD 6 P Positive supply voltage PEN (1) 7 I Programming enable PV (1) 8 N Negative programming voltage NOTES 1) Pin 7 (PEN) and PIN 8 (PV) are only used by the manufacturer for calibration purposes and should not be connected. ABSOLUTE MAXIMUM RATINGS Parameter Symbol Conditions Min Max Unit Notes o Supply voltage VDD Ta = 25 C -0.3 4 V o Storage temperature T -40 +125 C 1 S o MS5534-CP, Ta = 25 C 5 bar Overpressure P o MS5534-CM, Ta = 25 C 10 bar 2 NOTES 1) Storage and operation in an environment of dry and non-corrosive gases. 2) The MS5534CM is qualified referring to the ISO Standard 2281 and can withstand an absolute pressure of 11 bar in salt water or 100 m water respectively. DA5534C_003.doc June 16th, 2008 2 0005534C1175 ECN1118