MS5535B Datasheet, PDF (1/23 Pages) Intersema Sensoric SA – PRESSURE SENSOR MODULE

MS5535B (RoHS^*) 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*
DESCRIPTION
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°C. Other
improvements concern the ESD sensitivity, current consumption and converter accuracy.
FEATURES
• Supply voltage 2.2 V to 3.6 V
• Low supply current
• -40°C to +125°C operation temperature
• No external components required
APPLICATIONS
• 15 Bit ADC resolution pressure measurement and
control systems
• Mobile water depth measurement systems
• Diving computers and divers watches
BLOCK DIAGRAM
SENSOR ^+IN
-IN
Input MUX
ADC
dig.
Filter
Digital
Interface
VDD
MCLK
DIN
DO UT
SCLK
SGND
Sensor
Interface IC
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).
DA5535B_000.doc
February 15th, 2006
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00005535838 ECN776