Question

In: Electrical Engineering

Find the current-referenced sensitivity(output voltage per unit of field per unit of current)of a GaAs-based thin-film...

Find the current-referenced sensitivity(output voltage per unit of field per unit of current)of a GaAs-based thin-film Hall transducer with the length of 50μm, the width of 10μm and thickness of 5μm, provided that GaAsis doped to1*10^15cm-3. After placing this Hall transducer inside an energized magnet, the output voltage reached 250mV. Find the value of the magnetic field if the sensing current is 10mA.

Solutions

Expert Solution

Consider the hall sensor as shown below:

The expression for hall voltage is

                                                                

So the sensitivity is given by

                                                  

Here

                           

Plugging all values we get

                                              

(b) From Eq. (1),

                                                  

Or

                                          

Manojponduru answered 1 month ago
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