TMAG5170UEVM: TMAG5170EVM Sensor Resolution

Thomas Lampertius

Prodigy 20 points

Part Number: TMAG5170UEVM
Other Parts Discussed in Thread: TMAG5170

What is the TMAG5170EVM Sensor resolution (in mT)? Does this resolution change given the selected range of the device?

over 1 year ago

+1 Scott Bryson over 1 year ago

TI__Genius 16080 points

Thomas,

Welcome to E2E. Thanks for reaching out with this question. The resolution for TMAG5170 can be found in the datasheet. For instance, see the resolution of the TMAG5170A2

With a 16 bit result, you would divide the Full scale range by 65536. So in the case of the +/- 150 mT range, we have a full input range of 300 mT. The resolution per bit is therefore 4.578 uT.

Thanks,

Scott

0 Thomas Lampertius over 1 year ago in reply to Scott Bryson

Prodigy 20 points

Thanks! Also what is the size of the sensitive area of the sensor? I do no see that listed in the datasheet.

0 Scott Bryson over 1 year ago in reply to Thomas Lampertius

TI__Genius 16080 points

Thomas,

The sensing elements are quite small. The total sensing area is around 60 um x 60 um. In most use cases, this is most easily modeled by a fixed point within the device package.

Thanks,

Scott

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TMAG5170UEVM: TMAG5170EVM Sensor Resolution