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ZMZ20
Magnetic Field Sensor
Description
The ZMZ20 is an extremely sensitive magnetic field sensor in a 4 pin E-Line package employing the magneto-resistive effects of thin film Permalloy. It allows the measurement of magnetic fields or the detection of metallic parts. The sensor consists of a chip covered with Permalloy stripes which form a Wheatstone bridge, whose output voltage is proportional to the magnetic field component Hy. A perpendicular field Hx is necessary to suppress the hysteresis and this can be provided by using a small permanent magnet.Features and Benefits
• Output voltage proportional to magnetic field Hy• Adjustment of sensitivity and suppression of hysteresis by the auxiliary magnetic field Hx
• Magnetic fields vertical to the chip level are not effective
Applications
• Linear position sensors for process control, door interlocks, proximity detectors, machine tool sensing• Scalar measurement for compassing
• Automotive - door switches, engine position and speed sensing
• Metering of fluids by sensing rotation of impeller
• Traffic counting and vehicle-type sensing
• Measurement of current in a conductor without connection
Product Overview Specs
| Part Number | ZMZ20 |
| Supply Voltage V |
12 |
| Sensor Chip Alignment Error |
20 |
| Typical Bridge Resis |
1 |
| Sensitivity Sα |
1.7 |
| Max. Offset Voltage mV/V |
4.7 |
| Half Bridge Symmetry mV/V |
+1.0 |
| HROT kA/m |
No |
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Package Outline Information
- E-Line 4-pin
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