Instructions

2 Functional description
The differential pressure sensor evaluation board supports the standard I
2
C communication
interface as well as analog voltage output.
• A positive supply voltage 5V is applied to the sensor through VDD pin.
• The I
2
C interface pins SDA and SCL are connected with the interface pins on the host
controller side
• 7-bit slave address of the differential pressure sensor on the board is 0x78.
SDA and SCL pins must be connected to the VDD through pull-up resistors on
the host controller (master) side. There are no-pull up resistors on the sensor
board (slave)
The sensor works with 5V supply. In case the host controller is working on
3V, proper hardware set up including level-shifters and stable 5V power supply
must be used.
Pin
No.
Name Function Input/output Comments
1 SCL I
2
C serial clock Input
2 SDA I
2
C serial data Input/Output
3 GND
Negative supply
voltage
Supply
4 VOUT Analog output Output
5 VDD Positive supply voltage Supply
6 NC No connection
7 RSVD Reserved Do not connect
8 RSVD Reserved Do not connect
Table 2: Pin description of the sensor
Please refer to the corresponding data sheet of the sensor (Part No:
25131308xxx01) for more information about the sensor parameters and elec-
trical properties.
Differential Pressure Sensor Evaluation Board, Part Nr. 25132545xxx91
User manual version 1.0 © October 2019
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