MS5803-07BA
Altimeter and diving pressure sensor
The MS5803-07BA is a new digital, fully compensated pressure
sensor with SPI and I
2
C bus interface. The MS5803-07BA HE is
the high endurance pad technology version of the MS5803-07BA
pressure sensor module. It is optimized for altimeter and in the
same time water depth measurement with high resolution and
accuracy. The sensor module includes a high linearity pressure
sensor and an ultra-low power 24 bit
ΔΣ
ADC with internal factory
calibrated coefficients. It provides a precise digital 24 Bit pressure
and temperature value and different operation modes that allow
the user to optimize for conversion speed and current
consumption. A high resolution temperature output allows the
implementation of a thermometer function without any additional
sensor. The MS5803-07BA can be interfaced to virtually any
microcontroller. The communication protocol is simple, without the
need of programming internal registers in the device. The gel
protection and antimagnetic stainless steel cap allows the use in
100m waterproof watches. This new sensor module generation is
based on leading MEMS technology and latest benefits from TE
proven experience and know-how in high volume manufacturing
which have been widely used for over a decade.
FEATURES
Excellent accuracy for both altimeter and diving
applications until 60m depth
Operating range: 0 to 7bar, -20 to +85 °C
High resolution module: 0,4m air / 1mm water
Fast conversion down to 1 ms
Low power, 1 µA (standby < 0.15 µA)
Integrated digital pressure sensor (24 bit
ΔΣ
ADC)
Supply voltage 2.2 to 3.6 V
I2C and SPI interface (Mode 0, 3)
No external components (Internal oscillator)
Excellent long term stability
Hermetically sealable for outdoor devices
High Endurance (HE version)
APPLICATIONS
Dual mobile altimeter / depth meter systems
Adventure or multi-mode watches
Diving computer
SENSOR SOLUTIONS
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MS5803-07BA
Altimeter and diving pressure sensor
TECHNICAL DATA
Sensor Performances (V
DD
= 3 V)
Pressure
Range
ADC
Resolution (1), Altimeter
mode
Accuracy 0°C to +60°C,
400 to 1100 mbar (2)
Accuracy 0°C to + 40°C,
400 to 7000 mbar
Response time (2)
Long term stability
Temperature
Range
Resolution
Accuracy
Notes:
(1) Oversampling Ratio: 4096
(2) With auto-zero at one pressure point
(3) Oversampling Ratio 4096 / 2048 / 1024 / 512 / 256
Min
0
Typ
24
0.04
Max
7
Unit
bar
bit
mbar
-4.5
-50
+4.5
+50
mbar
mbar
ms
mbar/yr
Unit
°C
°C
°C
0.5 / 1.1 / 2.1 /
4.1 / 8.22
±1
Min
-20
<0.01
-3
+3
Typ
Max
+85
FUNCTIONAL BLOCK DIAGRAM
VDD
PS
Meas. MUX
SENSOR
+IN
dig.
Filter
Digital
Interface
PGA
ADC
CSB
SDI/SDA
SDO
SCLK
-IN
Sensor
Interface IC
SGND
Memory
(PROM)
128 bits
GND
SENSOR SOLUTIONS
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MS5803-07BA
Altimeter and diving pressure sensor
PERFORMANCE SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply voltage
Storage temperature
(3)
Overpressure
Maximum Soldering
Temperature
(2)
ESD rating
Latch up
(1)
Symbol
V
DD
T
S
P
max
T
max
Conditions
Min.
-0.3
-40
Typ.
ISO6425
(1)
40 sec max
Human Body
Model
JEDEC standard
No 78
-2
-100
Max
+3.6
+85
30
250
2
+100
Unit
V
°C
bar
°C
kV
mA
The MS5807-07BA is qualified referring to the ISO 6425 standard and can withstand an absolute pressure of 30 bar in salt water.
Refer to application note 808
(3)
Storage in an environment of dry and non-corrosive gases
(2)
ELECTRICAL CHARACTERISTICS
Parameter
Operating Supply voltage
Operating Temperature
Output Word
Supply current
(1 sample per sec.)
Peak supply current
Standby supply current
VDD Capacitor
Symbol
V
DD
T
I
DD
Conditions
Min.
2.2
-20
0.9
1.4
0.02
470
Typ.
3.0
+25
24
Max
+3.6
+85
12.5
0.14
Unit
V
°C
bit
µA
mA
µA
nF
Depending on OSR
during conversion
at 25°c
From VDD to GND
100
ANALOG DIGITAL CONVERTER (ADC)
Parameter
Output Word
Symbol
Conditions
OSR
Conversion time
(4)
t
c
4096
2048
1024
512
256
Min.
7.40
3.72
1.88
0.95
0.48
Typ.
24
8.22
4.13
2.08
1.06
0.54
Max
9.04
4.54
2.28
1.17
0.60
Unit
bit
ms
(4)
Maximum values must be used to determine waiting times in I2C communication
SENSOR SOLUTIONS
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MS5803-07BA
Altimeter and diving pressure sensor
PERFORMANCE SPECIFICATIONS (CONTINUED)
PRESSURE OUTPUT CHARACTERISTICS (V
DD
= 3 V, T = 25°C UNLESS OTHERWISE NOTED)
Parameter
Operating Pressure Range
Absolute Accuracy, autozero at
one pressure point
400…1100 mbar
(1)
Absolute Accuracy, autozero at
one pressure point
400…7000 mbar
(1)
Maximum error with supply
voltage
(3)
Long-term stability
(2)
Conditions
P
range
Full Accuracy
0..60°C, 400..1100 mbar
Min.
0
-4.5
Typ.
Max
7
+4.5
Unit
bar
mbar
0..40°C, 0..7000 mbar
V
DD
= 2.2 V … 3.6 V
OSR
4096
2048
1024
512
256
-50
±3
±1
0.034
0.048
0.067
0.097
0.176
+50
mbar
mbar
mbar/yr
Resolution RMS
mbar
(1)
(2)
(3)
Wet/dry cycle: sensor must be dried typically once a day.
The long-term stability is measured with non-soldered devices.
With autozero at 3V point
TEMPERATURE OUTPUT CHARACTERISTICS (V
DD
= 3 V, T = 25°C
UNLESS
OTHERWISE NOTED)
Parameter
Absolute Accuracy
400 …1100mbar
Absolute Accuracy
400 …1100mbar
Absolute Accuracy
400 … 7000mbar
Maximum error with supply
voltage
(4)
Conditions
0..40°C
-20..85°C
-20..85°C
V
DD
= 2.2 V … 3.6 V
OSR
Resolution RMS
4096
2048
1024
512
256
Min.
-1
-2
-3
±0.2
0.002
0.003
0.005
0.008
0.012
Typ.
Max
+1
+2
+3
Unit
°C
°C
°C
°C
°C
(4)
With autozero at 3V point
SENSOR SOLUTIONS
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MS5803-07BA
Altimeter and diving pressure sensor
PERFORMANCE SPECIFICATIONS (CONTINUED)
DIGITAL INPUTS (PS, CSB, DIN, SCLK, SDA, SCL)
Parameter
Serial data clock
Serial data clock
Input high voltage
Input low voltage
Input leakage current
Symbol
SCLK
SCL
V
IH
V
IL
I
leak25°C
Conditions
SPI protocol
I2C protocol
Pins CSB
at 25°c
Min.
Typ.
Max
20
400
100% V
DD
20% V
DD
0.15
Unit
MHz
kHz
V
V
µA
80% V
DD
0% V
DD
DIGITAL OUTPUTS (DOUT, SDA, SCL)
Parameter
Output high voltage
Output low voltage
Load capacitance
Symbol
V
OH
V
OL
C
LOAD
Conditions
I
source
= 0.6 mA
I
sink
= 0.6 mA
Min.
80% V
DD
0% V
DD
Typ.
Max
100% V
DD
20% V
DD
Unit
V
V
pF
16
SENSOR SOLUTIONS
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