325541030-00 TE Connectivity

MS5541C Miniature 14 bar Module 0 14 bar 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 High Endurance (HM version) DESCRIPTION The MS5541C is the miniature version of MS5535C pressure sensor module. The MS5541-HM is the high endurance pad technology version of MS5541C pressure sensor module. It contains a precision piezoresistive pressure sensor and an improved version of the 16 Bit Micropower Sensor interface IC known from the MS5535C. Compared to the previous version the ESD sensitivity has been improved to 4kV on all pins. In addition to this the MS5541C is from its outer dimensions compatible to the MS54xx series of pressure sensors. It uses an antimagnetic polished stainless steel ring for sealing with O-ring. The sensor provides 16 Bit pressure and temperature data via a 3 wire serial interface that can be easily interfaced with 4 Bit low power microcontrollers. 64 Bit of factory programmed PROM provides calibration data for a highly accurate pressure and temperature calculation. The MS5541C is fully software compatible to the MS5535C and previous versions of MS5541. FEATURES FIELD OF APPLICATION TECHNICAL DATA Sensor Performances (V = 3 V) Diving computers and watches DD Mobile water depth and measurement systems Pressure Min Typ Max Unit High endurance pad technology (HM version) Range 0 14 bar ADC 16 bit FUNCTIONAL BLOCK DIAGRAM Resolution 1.2 mbar Accuracy 0C to +40C, VDD -50 +20 mbar 0 to 10 bar Accuracy -40C to MCLK Input MUX +85C -60 +180 mbar +IN Digital SENSOR DIN 0 to 10 bar Interface DOUT dig. ADC Response time 35 ms Filter -IN SCLK Long term stability 20 mbar/yr Memory Sensor Temperature Min Typ Max Unit (PROM) Interface IC 64 bits SGND Range -40 +85 C Resolution 0.005 0.015 C GND Accuracy -0.8 +0.8 C DA5541C 009 www.meas-spec.com Apr. 01, 2014 0005541C1194 ECN2178 1/20 MS5541C Miniature 14 bar Module PERFORMANCE SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS Parameter Symbol Conditions Min Max Unit Notes Supply voltage V Ta = 25 C -0.3 4 V DD Storage temperature T -40 +85 C 1 S Overpressure P Ta = 25 C 30 bar 2 NOTES 1) Storage and operation in an environment of dry and non-corrosive gases. 2) The MS5541C is qualified referring to the ISO 6425 standard and can withstand an absolute pressure of 30 bar in salt water. ELECTRICAL CHARACTERISTICS (Ta = 25 C, V = 3.0 V unless noted otherwise) DD Parameter Symbol Conditions Min Typ Max Unit Operating pressure range p 0 14 bar Supply voltage V 2.2 3.0 3.6 V DD Supply current, V = 3.0 V DD average (1) Iavg 4 A during conversion (2) I 1 mA sc standby (no conversion) I 0.1 A ss Current consumption into MCLK MCLK = 32.768 kHz 0.5 A (3) Operating temperature range T -40 +85 C Conversion time t MCLK = 32.768 kHz 35 ms conv External clock signal (4) MCLK 30.000 32.768 35.000 kHz Duty cycle of MCLK 40/60 50/50 60/40 % Serial data clock SCLK 500 kHz NOTES 1) Under the assumption of one conversion every second. Conversion means either a pressure or a temperature measurement started by a command to the serial interface of MS5541C. 2) During conversion the sensor will be switched on and off in order to reduce power consumption the total on time within a conversion is about 2 ms. 3) This value can be reduced by switching off MCLK while MS5541C is in standby mode. 4) It is strongly recommended that a crystal oscillator be used because the device is sensitive to clock jitter. A square-wave form of the clock signal is a must. ANALOG DIGITAL CONVERTER (ADC) (T = -40 C .. 85 C V = 2.2 V .. 3.6 V) DD Parameter Symbol Conditions Min Typ Max Unit Resolution 16 Bit Linear Range 4 000 40 000 LSB Conversion Time MCLK = 32.768 kHz 35 ms INL Within linear range -5 +5 LSB DA5541C 009 www.meas-spec.com Apr. 01, 2014 0005541C1194 ECN2178 2/20