Data Sheet

MS5837-02BA
Ultra Small Gel Filled Pressure & Temperature Sensor, with Stainless Steel Cap
TE CONNECTIVITY SENSORS /// MS5837-02BA 09/2017
Page 6
PRESSURE AND TEMPERATURE CALCULATION
GENERAL
The MS5837 consists of a piezo-resistive sensor and a sensor interface integrated circuit. The main function of the
MS5837 is to convert the uncompensated analogue output voltage from the piezo-resistive pressure sensor to a
24-bit digital value, as well as providing a 24-bit digital value for the temperature of the sensor.
FACTORY CALIBRATION
Every module is individually factory calibrated at two temperatures and two pressures. As a result, 6 coefficients
necessary to compensate for process variations and temperature variations are calculated and stored in the 112-
bit PROM of each module. These bits (partitioned into 6 coefficients) must be read by the microcontroller software
and used in the program converting D1 and D2 into compensated pressure and temperature values.
COMMUNICATION INTERFACE
The MS5837 has been built with I
2
C serial interface.
Module ref
Mode
Pins used
MS5837-02BA01
I
2
C
SDA, SCL
The external microcontroller clocks in the data through the input SCL (Serial CLock) and SDA (Serial DAta). The
sensor responds on the same pin SDA which is bidirectional for the I
2
C bus interface. So this interface type uses
only 2 signal lines and does not require a chip select.