Diodes Incorporated Magnetic Field Sensors 650

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Part RoHS Manufacturer Sensors or Transducers Type Mounting Feature No. of Terminals Output Type Package Shape or Style Output Range Package Body Material Minimum Range Of Magnetic Field Maximum Supply Voltage Maximum Output Current Technology Screening Level Input Mode Maximum Magnetic Field Range Hysteresis Body Length/Diameter Body Width Power Supplies (V) Output Circuit Type Resistance Package Equivalence Code No. of Axes Sub-Category Linearity (%) Body Height Minimum Supply Voltage Maximum Operating Temperature Response Time Minimum Operating Temperature Sensitivity (mV/G) Terminal Finish Termination Type Output Interface Type Output (V) Maximum Operating Current Output Polarity Additional Features Maximum Measurement Range (mm) Housing JESD-609 Code Operating Frequency Minimum Measurement Range (mm)

ATS137-PL-A-B

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

3

ANALOG VOLTAGE

RECTANGULAR

700mV

PLASTIC/EPOXY

1 mT

20 V

25 A

BIPOLAR

13 mT

8 mT

4.1 mm

1.5 inch

3.5/20

SIP3,.03,50

Other Sensors/Transducers

3 mm

3.5 V

85 Cel

-20 Cel

MATTE TIN

SOLDER

OPEN-COLLECTOR

10 mA

INVERTING

e3

AH283-YLA

Diodes Incorporated

SURFACE MOUNT

5

VOLTAGE OUTPUT

RECTANGULAR

PLASTIC/EPOXY

-6 mT

20 V

6 mT

6 mT

4.5 mm

2.5 inch

12

2.6 ohm

TO-243,5 LEAD

Other Sensors

1.5 mm

10 V

100 Cel

-20 Cel

SOLDER

OPEN-DRAIN

4 mA

COMPLEMENTARY

ZMZ20

Diodes Incorporated

MAGNETIC FIELD SENSOR,MAGNETORESISTIVE

THROUGH HOLE MOUNT

ANALOG VOLTAGE

RECTANGULAR

16-24V

-3.75 mT

3.75 mT

50 mT

4 mm

2.6 inch

2200 ohm

4.2 mm

150 Cel

-40 Cel

5.7 mV/G

MATTE TIN

SOLDER

SENSITIVITY IS AT 4.7MV/V

PLASTIC

e3

AH173-WG-B-B

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

SURFACE MOUNT

ANALOG VOLTAGE

RECTANGULAR

0.30-0.40V

-8 mT

20 V

25 A

8 mT

8 mT

3 mm

1.6 inch

1.15 mm

3 V

125 Cel

-40 Cel

Matte Tin (Sn)

SOLDER

6 mA

e3

AH3243Q-W-7

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

Matte Tin (Sn)

e3

AH3271Q-P-A

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

MATTE TIN

e3

AH266-P-B

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

4

ANALOG VOLTAGE

RECTANGULAR

1.10-1.50V

PLASTIC/EPOXY

-10 mT

28 V

400 A

BIPOLAR

10 mT

8 mT

5.22 mm

1.55 inch

24

SIP4,.03,50

Other Sensors

3.65 mm

4 V

85 Cel

-20 Cel

Tin/Lead (Sn/Pb)

SOLDER

OPEN-COLLECTOR

10 mA

COMPLEMENTARY

e0

ATS177-PL-B-A

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

ANALOG VOLTAGE

RECTANGULAR

700mV

-7 mT

20 V

25 A

7 mT

8 mT

4.1 mm

1.5 inch

3 mm

3.5 V

85 Cel

-20 Cel

MATTE TIN

SOLDER

10 mA

e3

AH9249DN-G1

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

SURFACE MOUNT

DIGITAL CURRENT

SQUARE

1mA

-.5 mT

5.5 V

1 A

5.5 mT

1 mT

2 mm

2 inch

.75 mm

2.5 V

85 Cel

-40 Cel

SOLDER

4 mA

AH3362Q-SA-7

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

SURFACE MOUNT

3

CURRENT OUTPUT

RECTANGULAR

30-55mA

.5 mT

28 V

55 A

AEC-Q100

UNIPOLAR

4.5 mT

1 mT

2.9 mm

1.3 inch

TO-236

.975 mm

3 V

150 Cel

-40 Cel

MATTE TIN

SOLDER

OPEN-DRAIN

4 mA

e3

AH175-PL-A

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

3

ANALOG VOLTAGE

RECTANGULAR

300-700mV

PLASTIC/EPOXY

-6 mT

20 V

25 A

BIPOLAR

6 mT

8 mT

4.1 mm

1.52 inch

12

SIP3,.03,50

Other Sensors

3.03 mm

3.5 V

150 Cel

-40 Cel

Matte Tin (Sn)

SOLDER

OPEN-COLLECTOR

6 mA

INVERTING

e3

AH478Z5-AE1

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

5

DIGITAL CURRENT

RECTANGULAR

PLASTIC/EPOXY

-7 mT

18 V

7 mT

7 mT

5.232 mm

1.549 inch

14

SIP5,.02,37

Other Sensors/Transducers

5.405 mm

3.5 V

85 Cel

-20 Cel

SOLDER

OPEN-COLLECTOR

16 mA

COMPLEMENTARY

AH281-YA

Diodes Incorporated

SURFACE MOUNT

5

PLASTIC/EPOXY

-6 mT

6 mT

12

TO-243,5 LEAD

Other Sensors

100 Cel

-20 Cel

Tin/Lead (Sn/Pb)

OPEN-DRAIN

4 mA

COMPLEMENTARY

e0

ATS276-PA-C

Diodes Incorporated

THROUGH HOLE MOUNT

4

VOLTAGE OUTPUT

RECTANGULAR

PLASTIC/EPOXY

-10 mT

20 V

BIPOLAR

10 mT

7.5 mT

5.22 mm

1.55 inch

4/20

SIP4,.03,50

Other Sensors

5.07 mm

3.5 V

85 Cel

-20 Cel

Tin/Lead (Sn/Pb)

SOLDER

OPEN-COLLECTOR

25 mA

COMPLEMENTARY

e0

ATS177-PL-A

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

3

ANALOG VOLTAGE

RECTANGULAR

300-700mV

PLASTIC/EPOXY

-7 mT

20 V

25 A

BIPOLAR

7 mT

8 mT

4.105 mm

1.52 inch

3.5/20

SIP3,.03,50

Other Sensors

3.035 mm

3.5 V

85 Cel

-20 Cel

Matte Tin (Sn)

SOLDER

OPEN-COLLECTOR

10 mA

NON-INVERTING

e3

AH175-WL-7-B

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

SURFACE MOUNT

3

ANALOG VOLTAGE

RECTANGULAR

400mV

PLASTIC/EPOXY

-8 mT

20 V

25 A

BIPOLAR

8 mT

8 mT

3 mm

1.6 inch

12

TO-236

Other Sensors

1.206 mm

3.5 V

150 Cel

-40 Cel

MATTE TIN

SOLDER

OPEN-COLLECTOR

6 mA

INVERTING

e3

AH337-PG-B

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

3

VOLTAGE OUTPUT

RECTANGULAR

PLASTIC/EPOXY

3 mT

28 V

25 A

UNIPOLAR

15 mT

6 mT

4.1 mm

1.5 inch

12

SIP3,.03,50

Other Sensors

4.2 V

125 Cel

-40 Cel

MATTE TIN

SOLDER

OPEN-DRAIN

4 mA

NON-INVERTING

e3

AH277AZ4-AE1

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

4

DIGITAL CURRENT

RECTANGULAR

PLASTIC/EPOXY

-5 mT

16 V

BIPOLAR(LATCHED)

5 mT

6 mT

5.13 mm

3.6 inch

14

SIP4,.04,50

Other Sensors/Transducers

3.5 V

85 Cel

-20 Cel

MATTE TIN

SOLDER

OPEN-COLLECTOR

16 mA

COMPLEMENTARY

e3

ATS277-PL-A

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

4

ANALOG VOLTAGE

RECTANGULAR

0.30-0.60V

PLASTIC/EPOXY

-5 mT

20 V

400 A

BIPOLAR

5 mT

7.5 mT

5.22 mm

1.55 inch

4/20

SIP4,.03,50

Other Sensors

3.65 mm

3.5 V

85 Cel

-20 Cel

Matte Tin (Sn)

SOLDER

OPEN-COLLECTOR

25 mA

COMPLEMENTARY

e3

AH9247NTR-G1

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

SURFACE MOUNT

DIGITAL CURRENT

RECTANGULAR

1mA

.5 mT

5.5 V

1 A

4 mT

1 mT

2.96 mm

1.6 inch

1.45 mm

2.5 V

85 Cel

-40 Cel

Matte Tin (Sn)

SOLDER

3 mA

e3

AH266Z4-BE1

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

4

DIGITAL CURRENT

RECTANGULAR

400mA

PLASTIC/EPOXY

-10 mT

28 V

400 A

BIPOLAR(LATCHED)

10 mT

8 mT

5.13 mm

1.62 inch

24

SIP4,.03,50

Other Sensors/Transducers

5 V

85 Cel

-20 Cel

SOLDER

OPEN-COLLECTOR

6 mA

COMPLEMENTARY

OVER TEMPERATURE PROTECTION

AH277AZ4-CE1

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

4

DIGITAL CURRENT

RECTANGULAR

PLASTIC/EPOXY

-10 mT

16 V

BIPOLAR(LATCHED)

10 mT

6 mT

5.13 mm

3.6 inch

14

SIP4,.04,50

Other Sensors/Transducers

3.5 V

85 Cel

-20 Cel

MATTE TIN

SOLDER

OPEN-COLLECTOR

16 mA

COMPLEMENTARY

e3

AH173-PL-BA

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

3

ANALOG VOLTAGE

RECTANGULAR

PLASTIC/EPOXY

-6 mT

20 V

25 A

BIPOLAR

6 mT

8 mT

4.1 mm

1.5 inch

12

SIP3,.03,50

Other Sensors/Transducers

3 mm

3 V

125 Cel

-40 Cel

MATTE TIN

SOLDER

PASSIVE PULL-UP

6 mA

INVERTING

e3

AH282-Y

Diodes Incorporated

SURFACE MOUNT

5

VOLTAGE OUTPUT

RECTANGULAR

PLASTIC/EPOXY

-6 mT

20 V

6 mT

6 mT

4.5 mm

2.5 inch

12

2.6 ohm

TO-243,5 LEAD

Other Sensors

1.5 mm

10 V

100 Cel

-20 Cel

Tin/Lead (Sn/Pb)

SOLDER

OPEN-DRAIN

4 mA

COMPLEMENTARY

e0

AH266Z4-BG1

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

4

DIGITAL CURRENT

RECTANGULAR

400mA

PLASTIC/EPOXY

-10 mT

28 V

400 A

BIPOLAR(LATCHED)

10 mT

8 mT

5.13 mm

1.62 inch

24

SIP4,.03,50

Other Sensors/Transducers

5 V

85 Cel

-20 Cel

SOLDER

OPEN-COLLECTOR

6 mA

COMPLEMENTARY

AH283-YL

Diodes Incorporated

SURFACE MOUNT

5

VOLTAGE OUTPUT

RECTANGULAR

PLASTIC/EPOXY

-6 mT

20 V

6 mT

6 mT

4.5 mm

2.5 inch

12

2.6 ohm

TO-243,5 LEAD

Other Sensors

1.5 mm

10 V

100 Cel

-20 Cel

SOLDER

OPEN-DRAIN

4 mA

COMPLEMENTARY

AH3232Q-P-A

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

MATTE TIN

e3

ATS137-WG-7-A

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

SURFACE MOUNT

3

ANALOG VOLTAGE

RECTANGULAR

700mV

PLASTIC/EPOXY

1 mT

20 V

25 A

BIPOLAR

10 mT

8 mT

3 mm

1.6 inch

3.5/20

TO-236

Other Sensors

1.206 mm

3.5 V

85 Cel

-20 Cel

MATTE TIN

SOLDER

OPEN-COLLECTOR

10 mA

INVERTING

e3

AH276-PLA

Diodes Incorporated

THROUGH HOLE MOUNT

4

VOLTAGE OUTPUT

RECTANGULAR

PLASTIC/EPOXY

-11 mT

20 V

BIPOLAR

BIPOLAR(LATCHED)

11 mT

11 mT

5.22 mm

1.55 inch

3.5/20

SIP4,.04,50

Other Sensors

5.07 mm

3.5 V

85 Cel

-20 Cel

SOLDER

OPEN-COLLECTOR

25 mA

COMPLEMENTARY

AH172-PA-B

Diodes Incorporated

THROUGH HOLE MOUNT

3

VOLTAGE OUTPUT

RECTANGULAR

PLASTIC/EPOXY

-8 mT

20 V

BIPOLAR

8 mT

8 mT

4.105 mm

1.52 inch

12

SIP3,.03,50

Other Sensors

3 V

85 Cel

-20 Cel

Tin/Lead (Sn/Pb)

SOLDER

PASSIVE PULL-UP

6 mA

INVERTING

e0

AH9248DN-G1

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

SURFACE MOUNT

DIGITAL CURRENT

SQUARE

1mA

-.5 mT

5.5 V

1 A

5.5 mT

1 mT

2 mm

2 inch

.75 mm

2.5 V

85 Cel

-40 Cel

SOLDER

4 mA

AH266K-PG-B-A

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

4

ANALOG VOLTAGE

RECTANGULAR

PLASTIC/EPOXY

-7 mT

28 V

400 A

BIPOLAR

7 mT

8 mT

5.22 mm

1.55 inch

24

SIP4,.03,50

Other Sensors

3.65 mm

4 V

85 Cel

-20 Cel

MATTE TIN

SOLDER

OPEN-COLLECTOR

10 mA

COMPLEMENTARY

e3

AH480-ML-A

Diodes Incorporated

SURFACE MOUNT

8

VOLTAGE OUTPUT

SQUARE

PLASTIC/EPOXY

-7 mT

20 V

BIPOLAR

7 mT

7 mT

3 mm

3 inch

14

TSSOP8,.19

Other Sensors

1.02 mm

3.5 V

85 Cel

-20 Cel

SOLDER

25 mA

COMPLEMENTARY

UZMY20M

Diodes Incorporated

MAGNETIC FIELD SENSOR,MAGNETORESISTIVE

SURFACE MOUNT

ANALOG VOLTAGE

RECTANGULAR

12-22V

-1.87 mT

1.87 mT

50 mT

6.3 mm

3.3 inch

2200 ohm

1.7 mm

7 mV/G

SOLDER

PLASTIC

AH922Z3-G1

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

3

DIGITAL CURRENT

RECTANGULAR

PLASTIC/EPOXY

3.5 mT

22 V

UNIPOLAR

14 mT

4.5 mT

4 mm

1.52 inch

12

SIP3,.03,50

Other Sensors/Transducers

4.705 mm

3.5 V

125 Cel

-40 Cel

MATTE TIN

SOLDER

OPEN-DRAIN

5 mA

NON-INVERTING

e3

ZMX40MT8TC

Diodes Incorporated

MAGNETIC FIELD SENSOR,MAGNETORESISTIVE

SURFACE MOUNT

ANALOG VOLTAGE

RECTANGULAR

12-24mV

6.5 mm

2200 ohm

1.7 mm

125 Cel

-25 Cel

5 mV/G

SOLDER

ATS477-SL-A

Diodes Incorporated

SURFACE MOUNT

8

VOLTAGE OUTPUT

RECTANGULAR

PLASTIC/EPOXY

-7 mT

20 V

BIPOLAR

7 mT

6 mT

4.87 mm

3.91 inch

3.5/20

SOP8,.25

Other Sensors

1.67 mm

3.5 V

85 Cel

-20 Cel

SOLDER

OPEN-COLLECTOR

30 mA

INVERTING

ATS276-PL-B

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

4

ANALOG VOLTAGE

RECTANGULAR

0.30-0.60V

PLASTIC/EPOXY

-7 mT

20 V

400 A

BIPOLAR

7 mT

7.5 mT

5.22 mm

1.55 inch

4/20

SIP4,.03,50

Other Sensors

3.65 mm

3.5 V

85 Cel

-20 Cel

Matte Tin (Sn)

SOLDER

OPEN-COLLECTOR

25 mA

COMPLEMENTARY

e3

ATS477-S-A

Diodes Incorporated

SURFACE MOUNT

8

VOLTAGE OUTPUT

RECTANGULAR

PLASTIC/EPOXY

-7 mT

20 V

BIPOLAR

7 mT

6 mT

4.87 mm

3.91 inch

3.5/20

SOP8,.25

Other Sensors

1.67 mm

3.5 V

85 Cel

-20 Cel

Tin/Lead (Sn/Pb)

SOLDER

OPEN-COLLECTOR

30 mA

INVERTING

e0

AH173-PL-BB

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

3

ANALOG VOLTAGE

RECTANGULAR

PLASTIC/EPOXY

-8 mT

20 V

25 A

BIPOLAR

8 mT

8 mT

4.1 mm

1.5 inch

12

SIP3,.03,50

Other Sensors/Transducers

3 mm

3 V

125 Cel

-40 Cel

MATTE TIN

SOLDER

PASSIVE PULL-UP

6 mA

INVERTING

e3

AH173-WL-B-A

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

SURFACE MOUNT

ANALOG VOLTAGE

RECTANGULAR

0.30-0.40V

-6 mT

20 V

25 A

6 mT

8 mT

3 mm

1.6 inch

1.15 mm

3 V

125 Cel

-40 Cel

SOLDER

6 mA

AH175PL-B-A

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

3

ANALOG VOLTAGE

RECTANGULAR

300-400mV

PLASTIC/EPOXY

-6 mT

20 V

25 A

BIPOLAR

6 mT

8 mT

4.1 mm

1.5 inch

12

SIP3,.03,50

Other Sensors/Transducers

3 mm

3.5 V

125 Cel

-40 Cel

MATTE TIN

SOLDER

OPEN-COLLECTOR

6 mA

INVERTING

e3

AH337-WLA

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

SURFACE MOUNT

3

ANALOG VOLTAGE

RECTANGULAR

300-400mV

PLASTIC/EPOXY

3 mT

28 V

25 A

15 mT

6 mT

2.9 mm

1.6 inch

12

TO-236

Other Sensors

1.35 mm

4.2 V

125 Cel

-40 Cel

Matte Tin (Sn)

SOLDER

OPEN-DRAIN

4 mA

NON-INVERTING

e3

AH278Z4-BE1

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

4

RECTANGULAR

PLASTIC/EPOXY

-10 mT

28 V

BIPOLAR(LATCHED)

10 mT

8 mT

5.13 mm

1.62 inch

24

SIP4,.03,50

Other Sensors/Transducers

4 V

85 Cel

-20 Cel

MATTE TIN

SOLDER

OPEN-COLLECTOR

16 mA

COMPLEMENTARY

e3

AH266-PL-B

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

4

ANALOG VOLTAGE

RECTANGULAR

1.10-1.50V

PLASTIC/EPOXY

-10 mT

28 V

400 A

BIPOLAR

10 mT

8 mT

5.22 mm

1.55 inch

24

SIP4,.03,50

Other Sensors

3.65 mm

4 V

85 Cel

-20 Cel

Matte Tin (Sn)

SOLDER

OPEN-COLLECTOR

10 mA

COMPLEMENTARY

e3

AH175-PG-B-B

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

THROUGH HOLE MOUNT

3

PLASTIC/EPOXY

-8 mT

BIPOLAR

8 mT

12

SIP3,.03,50

Other Sensors

125 Cel

-40 Cel

MATTE TIN

OPEN-COLLECTOR

6 mA

NON-INVERTING

e3

ATS137P-B

Diodes Incorporated

THROUGH HOLE MOUNT

3

VOLTAGE OUTPUT

RECTANGULAR

PLASTIC/EPOXY

1 mT

20 V

BIPOLAR

13 mT

8 mT

4.105 mm

1.52 inch

3.5/20

SIP3,.03,50

Other Sensors

3.5 V

85 Cel

-20 Cel

Tin/Lead (Sn/Pb)

SOLDER

OPEN-COLLECTOR

10 mA

INVERTING

REVERSE POLARITY PROTECTION

e0

AH173-WL-A

Diodes Incorporated

MAGNETIC FIELD SENSOR,HALL EFFECT

SURFACE MOUNT

3

ANALOG VOLTAGE

RECTANGULAR

300-400mV

PLASTIC/EPOXY

-6 mT

20 V

25 A

BIPOLAR

6 mT

8 mT

2.9 mm

1.6 inch

12

TO-236

Other Sensors

1.35 mm

3 V

125 Cel

-40 Cel

Matte Tin (Sn)

SOLDER

PASSIVE PULL-UP

6 mA

INVERTING

e3

Magnetic Field Sensors

Magnetic field sensors are electronic devices that measure the strength and direction of magnetic fields and convert them into a measurable electrical signal. They are commonly used in a variety of applications, such as navigation, automotive, industrial, and medical.

Magnetic field sensors work by detecting the change in magnetic field strength or direction as a magnetic field interacts with a sensing element. The sensing element is typically a small piece of magnetic material, such as a magnetoresistive or Hall-effect sensor, which generates a measurable electrical signal proportional to the strength and direction of the magnetic field.

There are several types of magnetic field sensors, including Hall-effect sensors, magnetoresistive sensors, and fluxgate sensors. Hall-effect sensors work by measuring the change in voltage across a thin strip of semiconductor material as it is exposed to a magnetic field. Magnetoresistive sensors work by measuring the change in resistance of a thin film of magnetic material as it is exposed to a magnetic field. Fluxgate sensors work by using a coil to detect the magnetic field and a feedback circuit to measure the strength and direction of the field.