MS5534B_1 Datasheet, PDF (1/21 Pages) Intersema Sensoric SA – BAROMETER MODULE

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°C) as well
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°C to +125°C operation temperature
• No external components required
APPLICATIONS
• Mobile altimeter / barometer systems
• Weather control systems
• Adventure or multi-mode watches
• GPS receivers
BLOCK DIAGRAM
SENSOR ^+IN
-IN
Input MUX
ADC
dig.
Filter
Digital
Interface
VDD
MCLK
DIN
DOUT
SCLK
SGND
Sensor
Interface IC
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).
DA5534B_003.doc
February 28th, 2005
1
00005534B784
ECN 711