TMAG5328: Detection accuracy

Shunsuke Yamamoto

Part Number: TMAG5328

Hi team,

Which part of the TMAG5328 is mechanically considered to have good detection accuracy? The top? or the bottom? I haven't been able to see such parameters in the datasheet.

Best regards,

Shunsuke Yamamoto

6 months ago

0 Jesse Baker 6 months ago

TI__Expert 6890 points

Hi Yamamoto-san,

Thanks for posting to the Sensors forum.

The TMAG5328 is sensitive to magnetic flux as described in section 7.3.1 of the datasheet. A positive magnetic flux exists when a south magnetic pole is near the top of the package or a north magnetic pole is near the bottom of the package. A negative magnetic flux exists when a north magnetic pole is near the top of the package or a south magnetic pole is near the bottom of the package.

As described in section 10.1, magnetic fields pass through most non-ferromagnetic materials with no significant disturbance, and magnetic fields also easily pass through most PCBs, which makes placing the magnet on the opposite side possible.

Lastly, the location of the Hall element within the device is shown in Figure 7-7.

Best regards,

Jesse

0 Shunsuke Yamamoto 6 months ago in reply to Jesse Baker

TI__Expert 4946 points

Hi Jesse,

Thank you for the reply. I apologize that I miss important statements on the datasheet... By the way, Is there a possibility that the sensing element get shifted?

Is there any variation in the sensing position?

Best regards,

Shunsuke Yamamoto

0 Jesse Baker 6 months ago in reply to Shunsuke Yamamoto

TI__Expert 6890 points

Hi Yamamoto-san,

I have reached out internally to see if we have this information. I will update this thread when I get a response.

Best regards,

Jesse

+1 Jesse Baker 6 months ago in reply to Shunsuke Yamamoto

TI__Expert 6890 points

Hi Yamamoto-san,

The X1, X2, Y1, Y2 values each have a tolerance of +/- 0.15 mm. Z1 can range from 0.585mm - 0.715mm. Z2 can range from 0.385mm - 0.515mm.

Best regards,

Jesse