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    BMP388 PCBs

    honoju
    Member

    BMP388 PCBs

    Hi,

    I was looking into the BMP388 sensor and especially in its connection schematics for SPI communication. The SPI connection diagram proposed in the Bosch datasheet shows only two capacitors in addition of the sensor . But schematics from retailers like Adafruit, BlueDot, ... show a voltage regulator, a bidirectionnal logic level inverter and resistors that don't appear in the Bosch BMP388 datasheet.

    My question:"is the connection diagram in the Bosch datasheet sufficient for the sensor to work or do we need to connect the voltage regulator, the logic level converter and resistors to the sensor ?"

    Thank you in advance for your response,

    Best regards,

    3 REPLIES 3
    FAE_CA1
    Community Moderator

    Re: BMP388 PCBs

    Hi,

    Thanks for your inqury.

    The connection diagram in the Bosch BMP388 datasheet is sufficient for the sensor to work. In order to get the best performance from the sensor, it is recommended to have an LDO to power BMP388. If your system has only one power rail between 1.65V and 3.6V, then you don't need level converter for I2C and/or SPI communication. The boards from third party for BMP388 are considered as a reference design so that users can use the boards in their system for evaluation quickly.

    Thanks.

    honoju
    Member

    Re: BMP388 PCBs

    Hello,

    I am getting back to the problematic. Is it possible to have a gerber file of the BMP388 sensor in order to design our personal PCBs?

    FAE_CA1
    Community Moderator

    Re: BMP388 PCBs

    Hi,

    You can design your own BMP388 PCB library according to the datasheet Section 7.1 outline drawing. Please make sure that there are no traces or vias underneath the BMP388 chip in order to minimize the mechanical stress to the BMP388.

    Thanks.

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