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PDF MS5534C Data sheet ( Hoja de datos )
| Número de pieza | MS5534C | |
| Descripción | Barometer Module | |
| Fabricantes | TE | |
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MS5534C
Barometer Module
SPECIFICATIONS
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
16 Bit ADC
3-wire serial interface
1 system clock line (32.768 kHz)
Low voltage and low power consumption
The MS5534C 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.
MS5534C 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.
The MS5534C is fully software compatible to the previous versions
(MS5534A and MS5534B). Compared to the previous versions the
ESD sensitivity level has been improved to 4kV on all pins.
SENSOR SOLUTIONS ///MS5534C
09/2015
Page 1
1 page  
MS5534C
Barometer Module
ELECTRICAL CHARACTERISTICS
DIGITAL INPUTS
Parameter
Input High Voltage
Input Low Voltage
Signal Rise Time
Signal Fall Time
Symbol
VIH
VIL
tr
tf
Conditions
(T = -40 °C .. 125 °C, VDD = 2.2 V .. 3.6 V)
Min Typ Max Unit
80% VDD
100% VDD
V
0% VDD
20% VDD
V
200 ns
200 ns
DIGITAL OUTPUTS
Parameter
Output High Voltage
Output Low Voltage
Signal Rise Time
Signal Fall Time
AD-CONVERTER
Parameter
Resolution
Linear Range
Conversion Time
INL
Symbol
VOH
VOL
tr
tf
Conditions
Isource = 0.6 mA
Isink = 0.6 mA
(T = -40 °C .. 125 °C, VDD = 2.2 V .. 3.6 V)
Min Typ Max Unit
80% VDD
100% VDD
V
0% VDD
20% VDD
V
200 ns
200 ns
Symbol Conditions
MCLK = 32.768 kHz
Within linear range
(T = -40 °C .. 125 °C, VDD = 2.2 V .. 3.6 V)
Min Typ Max Unit
16 Bit
4'000
40'000
LSB
35 ms
-5 +5 LSB
SENSOR SOLUTIONS ///MS5534C
09/2015
Page 5
5 Page 
MS5534C
Barometer Module
Start
Read calibration data (factory calibrated) from
PROM of MS5534C
Word1, Word2, Word3 and Word4 (4x16 Bit)
Basic equations:
Convert calibration data into coefficients:
(see bit pattern of Word1-Word4)
C1: Pressure sensitivity
C2: Pressure offset
C3: Temperature coefficient of pressure sensitivity
C4: Temperature coefficient of pressure offset
C5: Reference temperature
C6: Temperature coefficient of the temperature
(15 Bit)
(12 Bit)
(10 Bit)
(10 Bit)
(11 Bit)
(6 Bit)
(Refer to application note AN517 for limits of coefficients and
calculated results)
SENST1
OFFT1
TCS
TCO
Tref
TEMPSENS
Example:
Word1 = 50426
Word2 = 9504
Word3 = 48029
Word4 = 55028
C1 = 25213
C2 = 1908
C3 = 859
C4 = 750
C5 = 148
C6 = 32
Read digital pressure value from MS5534C
D1 (16 Bit)
Read digital temperature value from MS5534C
D2 (16 Bit)
Calculate calibration temperature
UT1 = 8*C5+20224
Calculate actual temperature
Difference between actual temperature and reference
temperature:
dT = D2 - UT1
Actual temperature:
TEMP = 200 + dT*(C6+50)/210 (0.1°C resolution)
dT(D2) = D2 - Tref
TEMP(D2) = 20°+dT(D2)*TEMPSENS
Calculate temperature compensated pressure
Offset at actual temperature:
OFF = C2*4 + ((C4-512)*dT)/212
Sensitivity at actual temperature:
SENS = C1 + (C3*dT)/210 + 24576
X = (SENS * (D1-7168))/214 - OFF
Temperature compensated pressure:
P = X*10/25 + 250*10 (0.1mbar resolution)
OFF(D2) = OFFT1+TCO*dT(D2)
SENS(D2) = SENST1+TCS*dT(D2)
P(D1,D2) = D1*SENS(D2)-OFF(D2)
D1 = 17000
D2 = 22500
dT = 1092
TEMP = 287
= 28.7 °C
OFF = 7695
SENS = 50705
X = 22732
P = 9603
= 960.3 mbar
Display pressure and temperature value
Fig. 3: Flow chart for pressure and temperature reading and software compensation
SENSOR SOLUTIONS ///MS5534C
09/2015
Page 11
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet MS5534C.PDF ] | |
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