MS5534B (RoHS )
*
BAROMETER MODULE
•
10 - 1100 mbar 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 MS5534B 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. MS5534B 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. Sensor packaging options are plastic or metal cap.
Compared to the previous version (MS5534A) the temperature range has been improved (-40 to +125° as well
C)
as the pressure range (measurement down to 10 mbar). 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° to +125° operation temperature
C
C
•
No external components required
APPLICATIONS
•
Mobile altimeter / barometer systems
•
Weather control systems
•
Adventure or multi-mode watches
•
GPS receivers
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 5534B.
*
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).
00005534B784
ECN 711
DA5534B_003.doc
February 28th, 2005
1
INTERSEMA [ INTERSEMA SENSORIC SA ]
