INA228: Cap load I2C lines

Arumugam Palaniyandi

Expert 1040 points

Part Number: INA228
Other Parts Discussed in Thread: INA226

Hi,

In our project we are using INA228 TI part 13 no's.

We need to calculate the Capacitive load for I2C lines.

What is the maximum cap load for SDA and SCL pin ??

Thanks and Regards,

Arumugam.P

over 2 years ago

0 Clemens Ladisch over 2 years ago

Guru 316440 points

This is not specified or guaranteed for this device, but in general, the typical value for I²C I/Os is less than 10 pF.

0 Mitch M over 2 years ago

TI__Mastermind 26105 points

Hello Arumugam,

Those pins have a typical capacitance of 3pF.

As a side note, although we do not have an IBIS Model for the INA228, you can use the model from the INA226, which will be very similar: https://www.ti.com/lit/zip/sbom458.

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INA228: Cap load I2C lines