MS5535-CM Measurement Specialties Inc., MS5535-CM Datasheet - Page 15

• Manufacturer Part Number: MS5535-CM
• Description: SENSOR PRESURE 14 BAR 16BIT
• Manufacturer: Measurement Specialties Inc.

Specifications of MS5535-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 ~ 125°C
• Package / Case: 9 x 9mm Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 223-1101-2

APPLICATION INFORMATION
GENERAL
The advantage of combining a pressure sensor with a directly adapted integrated circuit is to save other external
components and to achieve very low power consumption. The main application field for this system includes
portable devices with battery supply, but its high accuracy and resolution make it also suited for industrial and
automotive applications. The possibility to compensate the sensor with software allows the user to adapt it to his
particular application. Communication between the MS5535C and the widely available microcontrollers is realised
over an easy-to-use 3-wire serial interface. Customers may select which microcontroller system to be used, and
there are no specific standard interface cells required, which may be of interest for specially designed 4 Bit-
microcontroller applications.
CALIBRATION
The MS5535C is factory calibrated. The calibration data is stored inside the 64-Bit PROM memory.
SOLDERING
Please refer to the application note AN808 for all soldering issues.
HUMIDITY, WATER PROTECTION
The MS5535CM carries a metal protection cap filled with silicone gel for enhanced protection against humidity.
The properties of this gel ensure function of the sensor even when in direct water contact. This feature can be
useful for waterproof watches or other applications, where direct water contact cannot be avoided. Nevertheless
the user should avoid drying of hard materials like for example salt particles on the silicone gel surface. In this
case it is better to rinse with clean water afterwards. Special care has to be taken to not mechanically damage
the gel. Damaged gel could lead to air entrapment and consequently to unstable sensor signal, especially if the
damage is close to the sensor surface.
The metal protection cap is fabricated of special anticorrosive stainless steel in order to avoid any corrosive
battery effects inside the final product.
LIGHT SENSITIVITY
The MS5535C is sensitive to sunlight, especially to infrared light sources. This is due to the strong photo effect
of silicon. As the effect is reversible there will be no damage, but the user has to take care that in the final
product the sensor cannot be exposed to direct light during operation. This can be achieved for instance by
placing mechanical parts with holes in such that light cannot pass.
CONNECTION TO PCB
The package outline of the module allows the use of a flexible PCB to connect it. This can be important for
applications in watches and other special devices, and will also reduce mechanical stress on the device.
For applications subjected to mechanical shock, it is recommended to enhance the mechanical reliability of the
solder junctions by covering the rim or the corners of MS5535C's ceramic substrate with glue or Globtop like
material.
DA5535C_003.doc
June 16th, 2008
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