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PDF MS5535B Data sheet ( Hoja de datos )
| Número de pieza | MS5535B | |
| Descripción | PRESSURE SENSOR MODULE | |
| Fabricantes | Intersema | |
| Logotipo |  |
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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
Fig. 1: Block diagram 5535B.
GND
* 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
00005535838 ECN776
February 15th, 2006
1
1 page  
PRESSURE OUTPUT CHARACTERISTICS
With the calibration data stored in the interface IC of the MS5535B the following characteristics can be achieved:
Parameter
Resolution
Absolute Pressure Accuracy
(Temperature range 0 .. +40°C)
Absolute Pressure Accuracy
(Temperature range -40 .. +85°C)
Absolute Pressure Accuracy
(Temperature range -40 .. +125°C)
Long-term Stability
Maximum Error over Supply Voltage
Conditions
p = 0 .. 5 bar
p = 0 .. 10 bar
p = 0 .. 14 bar
p = 0 .. 5 bar
p = 0 .. 10 bar
p = 0 .. 14 bar
p = 0 .. 5 bar
p = 0 .. 10 bar
p = 0 .. 14 bar
6 months
VDD = 2.2 .. 3.6 V
Min
-25
-60
-150
-40
-60
-160
-80
-100
-200
-20
(VDD = 3.0 V unless noted otherwise)
Typ Max
Unit Notes
1.2 mbar
+20
+20
+20
+100
+180
+200
+200
+300
+400
mbar
mbar
mbar
20 mbar
1
2
2
2
3
+20 mbar/V
NOTES
1) A stable pressure reading of the given resolution requires taking the average of 2 to 4 subsequent pressure
values due to noise of the ADC.
2) Maximum error of pressure reading over the pressure range.
3) The long-term stability is measured with non-soldered devices.
TEMPERATURE OUTPUT CHARACTERISTICS
This temperature information is not required for most applications, but it is necessary to allow for temperature
compensation of the pressure output.
(VDD = 3.0 V unless noted otherwise)
Parameter
Conditions
Min Typ Max
Unit Notes
Resolution
0.005 0.01 0.015
°C
Accuracy
Maximum Error over Supply
Voltage
T = 20°C
T = -40 .. +125°C
VDD = 2.2 .. 3.6 V
-0.8
-2
-0.3
0.8 °C
+4 °C
0.3 °C
1
NOTE
1) With the second-order temperature compensation as described in Section “FUNCTION". See next section for
typical operating curves.
DA5535B_000.doc
00005535838 ECN776
February 15th, 2006
5
5 Page 
followed by a division. This division can be performed by Bit-wise shifting (divisors are to the power of 2). It is
ensured that the results of these divisions are less than 65536 (16-Bit).
For the timing of signals to read out Word1 to Word4, D1, and D2 please refer to the paragraph “SERIAL
INTERFACE”.
DA5535B_000.doc
00005535838 ECN776
February 15th, 2006
11
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet MS5535B.PDF ] | |
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