MS5803-14BA
Miniature 14 bar Module
DA5803-14BA_006 March 25, 2013
000058031641 ECN1973 1/18
• High resolution module, 0.2 mbar
• Fast conversion down to 1 ms
• Low power, 1 µA (standby < 0.15 µA)
• Integrated digital pressure sensor (24 bit ΔΣ ADC)
• Supply voltage 1.8 to 3.6 V
• Operating range: 0 to 14 bar, -40 to +85 °C
• I
2
C and SPI interface (Mode 0,3)
• No external components (Internal oscillator)
• Excellent long term stability
• Hermetically sealable for outdoor devices
DESCRIPTION
The MS5803-14BA is a new generation of high resolution pressure sensors with SPI and I2C bus interface. It is
optimized for depth measurement systems with a water depth resolution of 1cm and below. The sensor module
includes a high linear 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 depth measurement systems and thermometer function without any
additional sensor. The MS5803-14BA can be interfaced to any microcontroller. The communication protocol is
simple, without the need to programming internal registers in the device. The gel protection and antimagnetic
stainless steel cap protects against 30 bar overpressure water resistant. This new sensor module generation is
based on leading MEMS technology and latest benefits from the Intersema’s proven experience and know-how
in high volume manufacturing of pressure modules have been widely used for over a decade. This sensing
principle employed leads to very low hysteresis and high stability of both pressure and temperature signal.
FEATURES
FIELD OF APPLICATION TECHNICAL DATA
• Mobile water depth measurements systems
Sensor Performances (V
DD
= 3 V)
• Diving computers
Pressure Min Typ Max Unit
• Adventure or multi-mode watches
Range 0 14 bar
FUNCTIONAL BLOCK DIAGRAM
VDD
GND
PS
SCLK
SDO
SDI/SDA
Meas. MUX
ADC
Digital
Interface
Memory
(PROM)
128 bits
SENSOR
SGND
+IN
-IN
dig.
Filter
Sensor
Interface IC
PGA
CSB
ADC 24 bit
Resolution (1)
1 / 0.6 / 0.4 / 0.3
/ 0.2
mbar
Accuracy 0°C to +40°C,
0 to 6 bar (2)
-20 +20 mbar
Accuracy -40°C to + 85°C
0 to 6 bar (2)
-40 +40 mbar
Response time
0.5 / 1.1 / 2.1 / 4.1 /
8.22
ms
Long term stability -20 mbar/yr
Temperature Min Typ Max Unit
Range -40 +85 °C
Resolution <0.01 °C
Accuracy -0.8 +0.8 °C
Notes: (1) Oversampling Ratio: 256 / 512 / 1024 / 2048 / 4096
(2) With autozero at one pressure point
www.sensorway.cn
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