MS5534-CM Measurement Specialties Inc., MS5534-CM Datasheet - Page 15

• Manufacturer Part Number: MS5534-CM
• Description: SENSOR BAROMETRIC 1.1BAR 16BIT
• Manufacturer: Measurement Specialties Inc.

Specifications of MS5534-CM

• Pressure Type: Absolute
• Operating Pressure: 0.15 ~ 16 PSI, 10 ~ 1100 mbar
• Output: Digital
• Voltage - Supply: 2.2 V ~ 3.6 V
• Termination Style: PCB
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 9 x 9mm Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 223-1100-2

DECOUPLING CAPACITOR
Particular care must be taken when connecting the device to power supply. A 47 µ F tantalum capacitor must be
placed as close as possible of the MS5534C's VDD pin. This capacitor will stabilise the power supply during data
conversion and thus, provide the highest possible accuracy.
APPLICATION EXAMPLE: ALTIMETER SYSTEM USING MS5534C
MS5534C is a circuit that can be used in connection with a microcontroller in mobile altimeter applications. It is
designed for low-voltage systems with a supply voltage of 3 V, particularly in battery applications. The MS5534C
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.
DA5534C_003.doc
0005534C1175 ECN1118
MS5534
Figure 7: Demonstration of MS5534C in a mobile altimeter.
3V-Battery
VDD
MCLK
DOUT
SCLK
GND
DIN
32.768 kHz
Tantal
47µF
June 16th, 2008
XTAL1
XTAL2
GND
4/8bit-Microcontroller
VDD
LCD-Display
EEPROM
optional
Keypad
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