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Load Cell Chip (ADS1232) with Four Inputs?

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gary_feesher

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Hi all,

I am analyzing a circuit, and I have noticed that the designer is using the ADS1232 TI Load Cell Chip (https://www.ti.com/lit/ds/symlink/ads1234.pdf), which accepts 2 differential inputs. TI has the ADS1234 model which accepts four differential inputs, but the circuit that I am analyzing is using the ADS1232.

However, the application for which the ADS1232 is implemented is using 4 load cells.

So my question is; how would the circuit designer be using an ADS1232 (which accepts two differential inputs) when there are 4 load cells being used in the system?

Thank you!
 

hi gary,
Are you referring to fig #42 of that linked datasheet?
E
 

So my question is; how would the circuit designer be using an ADS1232 (which accepts two differential inputs) when there are 4 load cells being used in the system?
Click to expand...

I presume, the (unfortunately unknown) circuit will tell. The question can be probably answered without knowing the circuit by looking at the application. It's standard practice to add the output of multiple load cells to a single scale signal by resistor networks.
 

A photo of the circuit is below:
circuit.jpg
 

Hi,

Maybe the outpus of the load cells are combined to get the average of all four sensors.

Klaus
 

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