MS5541B Datasheet, PDF (1/18 Pages) Intersema Sensoric SA – MINIATURE 14 bar MODULE

MS5541B (RoHS^*) MINIATURE 14 bar MODULE
• Integrated pressure sensor 6.2x6.4 mm
• Pressure range 0 - 14 bar (200 PSI)
• 15 Bit ADC
• 6 coefficients for a software compensation stored
on-chip
• 3-wire serial interface
• 1 system clock line (32.768 kHz)
• Low voltage / low power
• RoHS-compatible & Pb-free*
DESCRIPTION
The MS5541B is the miniature version of the popular MS5535B pressure sensor module. It contains a precision
piezoresistive pressure sensor and an improved version of the 15 Bit Micropower Sensor interface IC known
from the MS5535B. Compared to the MS5535A the temperature range has been improved (-40 to +85°C).
Other improvements concern the ESD sensitivity, current consumption and converter accuracy. In addition to
this the MS5541B is from its outer dimensions compatible to the MS54xx series of pressure sensors. It uses an
antimagnetic polished stainless steel ring for sealing with O-ring. The sensor provides 15 Bit pressure and
temperature data via a 3 wire serial interface that can be easily interfaced with 4 Bit low power microcontrollers.
64 Bit of factory programmed PROM provides calibration data for a highly accurate pressure and temperature
calculation. The MS5541B is fully software compatible to the MS5535B and MS5535A.
FEATURES
• Resolution 1.2 mbar
• Supply voltage 2.2 V to 3.6 V
• Operating current < 5uA
• Standby current < 0.1uA
• -40°C to +85°C
APPLICATIONS
• Small size 6.2x6.4 mm
• No external components required
• Diving computers and divers watches
• Mobile water depth measurement systems
BLOCK DIAGRAM
SENSOR ^+IN
-IN
SGND
Input MUX
ADC
dig.
Filter
Sensor
Interface IC
Digital
Interface
Memory
(PROM)
64 bits
VDD
MCLK
DIN
DOUT
SCLK
GND
Fig.: 1 Block Diagram 5541B
* _{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).
DA5541B_005.doc
September 25^th, 2006
1
00005541766 ECN865