MS5541-CM Measurement Specialties Inc., MS5541-CM Datasheet - Page 16

• Manufacturer Part Number: MS5541-CM
• Description: MODULE 14 BAR PRESSURE MINI SNSR
• Manufacturer: Measurement Specialties Inc.

Specifications of MS5541-CM

• Pressure Type: Absolute
• Operating Pressure: 203.05 PSI, 14bar
• Output: Digital
• Voltage - Supply: 2.2 V ~ 3.6 V
• Termination Style: PCB
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 6.2 x 6.4mm Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 223-1099-2

DECOUPLING CAPACITOR
Particular care must be taken when connecting the device to power supply: A 47µF tantalum capacitor must be
placed as close as possible of the MS5541C's VDD pin. This capacitor will stabilize the power supply during data
conversion and thus, provide the highest possible accuracy.
APPLICATION EXAMPLE: DIVING COMPUTER SYSTEM USING MS5541C
MS5541C is a circuit that can be used in connection with a microcontroller in diving computer applications. It is
designed for low-voltage systems with a supply voltage of 3V, particularly in battery applications. The MS5541C
is optimised for low current consumption as the AD-converter clock (MCLK) can use the 32.768 kHz frequency of
a standard watch crystal, which is supplied in most portable watch systems.
For applications in altimeter systems Intersema can deliver a simple formula to calculate the altitude, based on a
linear interpolation, where the number of interpolation points influences the accuracy of the formula.
RECOMMENDED PAD LAYOUT
Pad layout for bottom side of MS5541C soldered onto printed circuit board
DA5541C_001.doc
000055411194 ECN1037
MS5541
3V-Battery
Fig. 7: Demonstration of MS5541C in a diving computer
GND
VDD
MCLK
DIN
DOUT
SCLK
Fig. 8: Pad layout of MS5541C
32.768 kHz
February 19th, 2008
Tantal
47uF
XTAL1
XTAL2
GND
4/8bit-Microcontroller
VDD
LCD-Display
EEPROM
optional
Keypad
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