Problem with i2c address space for INA219

[MrCravon]

Hi again,

I am currently using a INA219 IC to measure the power consumption in a system. My problem is that the INA219 only has 16 usable addresses and i need 24 or more. The system has 8 modules and each module needs the power measured in three different places.

1. Is there an alternative to INA219 with a bigger address space and similar functionality?

2. Is there a similar circuit that uses different i2c addresses and can be used on the same buss as the INA219 sensors?

Thanks!

 

[bigdogguru]

My problem is that the INA219 only has 16 usable addresses and i need 24 or more. The system has 8 modules and each module needs the power measured in three different places.

One possible commonly utilized option to alleviate I2C address conflicts or limitation is to incorporate an I2C/SMBbus multiplexer or bus switch. Several manufacturers offer such devices including TI, NXP, Linear, they can often be cascaded in order to provide a large number of independent I2C buses, typically available in 2, 4 or 8 channels and some devices also offer interrupt capabilities.


BigDog