Datasheet

MS5837-30BA
Ultra-small, gel-filled pressure sensor with stainless steel cap
TE CONNECTIVITY SENSORS /// MS5837-30BA REV C2 12/2019
Page 6
FUNCTIONAL DESCRIPTION
GENERAL
The MS5837-30BA consists of a piezo-resistive sensor and a sensor interface IC. The main function of the MS5837-
30BA is to convert the uncompensated analog 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 W1 to W6) must be read by the microcontroller
software and used in the program converting D1 and D2 into compensated pressure and temperature values.
The coefficients W0 is for factory configuration and CRC.
SERIAL I
2
C INTERFACE
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.
Module ref
Mode
Pins used
Address (7 bits)
MS5837-30BA
I
2
C
SDA, SCL
0x76 (1110110 b)