|
|
PDF MS5540C Data sheet ( Hoja de datos )
| Número de pieza | MS5540C | |
| Descripción | Miniature Barometer Module | |
| Fabricantes | TE | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MS5540C (archivo pdf) en la parte inferior de esta página. Total 20 Páginas | ||
|
No Preview Available !
MS5540C
Miniature 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 6.2 x 6.4 mm
16 Bit ADC
3-wire serial interface
1 system clock line (32.768 kHz)
Low voltage and low power consumption
The MS5540C is a SMD-hybrid device including a precision
piezoresistive pressure sensor and an ADC-Interface IC. It is a
miniature version of the MS5534C barometer/altimeter module
and provides a 16 Bit data word from a pressure and temperature
dependent voltage. MS5540C 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 micro-controller.
Compared to MS5534A the pressure range (measurement down
to 10 mbar) has been improved. The MS5540C is fully software
compatible to the MS5534C and previous versions of MS5540. In
addition, the MS5540C is from its outer dimensions compatible to
the MS54XX series of pressure sensors. Compared to the
previous version the ESD sensitivity level has been improved to
4kV on all pins. The gel protection of the sensor provides a water
protection sufficient for 100 m waterproof watches without any
additional protection.
SENSOR SOLUTIONS ///MS5540C
09/2015
Page 1
1 page  
MS5540C
Miniature 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 .. 85 °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 .. 85 °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
Min
4'000
-5
(T = -40 °C .. 85 °C VDD = 2.2 V .. 3.6 V)
Typ Max Unit
16 Bit
40'000
LSB
35 ms
+5 LSB
SENSOR SOLUTIONS ///MS5540C
09/2015
Page 5
5 Page 
MS5540C
Miniature Barometer Module
Start
Read calibration data (factory calibrated) from
PROM of MS5540C
Word1, Word2, Word3 and Word4 (4x16 Bit)
Basic equations:
Example:
Word1 = 46940
Word2 = 40217
Word3 = 25172
Word4 = 47212
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 AN516 for limits of coefficients and
calculated results)
SENST1
OFFT1
TCS
TCO
Tref
TEMPSENS
C1 = 23470
C2 = 1324
C3 = 737
C4 = 393
C5 = 628
C6 = 25
Read digital pressure value from MS5540C
D1 (16 Bit)
Read digital temperature value from MS5540C
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 (0.1 mbar resolution)
OFF(D2) = OFFT1+TCO*dT(D2)
SENS(D2) = SENST1+TCS*dT(D2)
P(D1,D2) = D1*SENS(D2)-OFF(D2)
D1 = 16460
D2 = 27856
UT1 = 25248
dT = 2608
TEMP = 391
= 39.1 °C
OFF = 5220
SENS = 49923
X = 23093
P = 9716
= 971.6 mbar
Display pressure and temperature value
Fig. 3: Flow chart for pressure and temperature reading and software compensation
SENSOR SOLUTIONS ///MS5540C
09/2015
Page 11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet MS5540C.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MS5540B | MINIATURE BAROMETER MODULE |  Intersema |
| MS5540C | Miniature Barometer Module | TE |
| MS5540C | MINIATURE BAROMETER MODULE | Intersema |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |