MS5535B (RoHS )
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DESCRIPTION
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PRESSURE SENSOR MODULE
0 - 14 bar absolute pressure range
6 coefficients for software compensation stored
on-chip
Piezoresistive silicon micromachined sensor
Integrated miniature pressure sensor 9 x 9 mm
15 Bit ADC
3-wire serial interface
1 system clock line (32.768 kHz)
Low voltage and low power consumption
RoHS-compatible & Pb-free*
The MS5535B 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. MS5535B 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.
Compared to the previous version (MS5535A) the temperature range has been improved (-40 to +125° Other
C.
improvements concern the ESD sensitivity, current consumption and converter accuracy.
FEATURES
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Supply voltage 2.2 V to 3.6 V
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Low supply current
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-40° to +125° operation temperature
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C
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No external components required
APPLICATIONS
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15 Bit ADC resolution pressure measurement and
control systems
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Mobile water depth measurement systems
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Diving computers and divers watches
BLOCK DIAGRAM
VDD
MCLK
Digital
Interface
ADC
dig.
Filter
Input MUX
SENSOR
+IN
DIN
DOUT
SCLK
-IN
Sensor
Interface IC
SGND
Memory
(PROM)
64 bits
GND
Fig. 1: Block diagram 5535B.
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).
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DA5535B_000.doc
00005535838 ECN776
February 15th, 2006
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INTERSEMA [ INTERSEMA SENSORIC SA ]
