I am testing a LEM LTSR-25-NP current transducer. According to the datasheet, the current transducer should be outputting 2.5V +/- 0.025V when the input current is 0A, but this is not what I am experiencing. It seems that every time I go to set up the current transducer with a breadboard, jumper cables, STM32 MCU, and necessary power supplies, I get a different output voltage at 0A. I have gotten output voltage ranges from 2.6V all the way up to 3.2V. I have also noticed that by moving the jumper cables that are near the transducer, the output voltage changes. Yesterday I decided to ground the reference pin for a second and see what happens and it actually managed to fix the issue and the output was exactly 2.5V, but today I tried it again and it doesn't work.

Anybody have an idea of what may be going on here?

I appreciate any help.

LEM LTSR 25-NP Datasheet: https://www.lem.com/sites/default/files/products_datasheets/ltsr_25-np.pdf

I am testing a LEM LTSR-25-NP current transducer. According to the datasheet, the current transducer should be outputting 2.5 V +/- 0.025 V when the input current is 0 A, but this is not what I am experiencing. 

It seems that every time I set up the current transducer using a breadboard, jumper cables, an STM32 MCU, and thd necessary power supplies, I get a different output voltage at 0 A. I got output voltage ranging from 2.6 V all the way up to 3.2 V. 

I have also noticed that by moving the jumper cables that are near the transducer, the output voltage changes. 

Yesterday I decided to ground the reference pin for a second and see what happens and it actually managed to fix the issue; the output was exactly 2.5 V, but today I tried it again and it doesn't work.

Does anybody have an idea of what may be going on here?