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 5 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
The MS5803-05BA is a new generation of high resolution
altimeter sensors from MEAS Switzerland with SPI and I
2
C bus
interface. It is optimized for depth meters and altimeters with an
altitude resolution of 30 cm. 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 an altimeter/thermometer
function without any additional sensor. The MS5803-05BA 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 MEAS Switzerland proven
experience and know-how in high volume manufacturing of
altimeter modules, which have been widely used for over a
decade. The sensing principle employed leads to very low
hysteresis and high stability of both pressure and temperature
signal.
