GT Sensor™ Precision Gear Tooth Sensors
NVE GT Sensors are designed for detection of gear teeth and magnetic encoder wheels
in industrial speed sensing. The digital sensors use high-sensitivity, low-hysteresis
GMR to detect even the smallest gear
teeth and to provide a 50% duty cycle output with wide airgap and temperature
tolerances. Unlike other magnetic sensing technologies, NVE's GMR sensors withstand
extremely large magnetic fields.
Gear Tooth Sensor Live Demonstration
AKL-Series Gear-Tooth Sensor Demonstration
GT Sensor Tips
ABL and AKL-Series sensors are versatile, wide air gap gear-tooth sensors. The sensors are used with ferromagnetic gears and bias magnets, or with magnetic encoders.
ABL-Series analog sensors have differential sensor elements that provide sinusoidal outputs. Three standard spacings are available for use with fine and coarse pitches. Single- or double-bridge configurations are available. Double bridges generate sine and cosine outputs to provide direction information:
AKL-Series digital sensors are configured as two-wire devices, where the supply current indicates a passing tooth. Three AKL-Series parts are available: the AKL001-12 is designed for gear teeth or encoders with a pitch of 2.5 to 6 mm, the AKL002-12 for a pitch of 1 to 2.5 mm, and the AKL003-12 for a pitch of 0.6 to 1.5 mm:
Sensor Reference Designs
Download
Gear Tooth Sensor catalog section
GT Sensors are available with analog or digital
outputs. Dual-output versions are available with the second output phase shifted
with respect to the first for quadrature to determine direction.
MSOP8, TDFN SO8, and TDFN6 packages allow GT Sensors to fit in
the tightest spaces. An evaluation
kit is available with a variety of sensors, magnets, and PCBs, and a
demonstrator allows you to experiment with a sensor-gear airgap.
Gear Tooth Sensor Live Demonstration
AKL-Series Gear-Tooth Sensor Demonstration
GT Sensor Tips
ABL and AKL-Series sensors are versatile, wide air gap gear-tooth sensors. The sensors are used with ferromagnetic gears and bias magnets, or with magnetic encoders.
ABL-Series analog sensors have differential sensor elements that provide sinusoidal outputs. Three standard spacings are available for use with fine and coarse pitches. Single- or double-bridge configurations are available. Double bridges generate sine and cosine outputs to provide direction information:
| ABL-Series Analog Gear-Tooth Sensors | |||
|
Part Number
|
Single or
Dual Bridge |
Element
Spacing (mm) |
Package
|
| ABL004-00 | Single | 1 | MSOP8 |
| ABL005-00 | Single | 0.5 | MSOP8 |
| ABL006-00 | Single | 0.3 | MSOP8 |
| ABL014-00 | Dual | 1 | MSOP8 |
| ABL015-00 | Dual | 0.5 | MSOP8 |
| ABL016-00 | Dual | 0.3 | MSOP8 |
| ABL004-10 | Single | 1 | TDFN6 |
| ABL005-10 | Single | 0.5 | TDFN6 |
| ABL006-10 | Single | 0.3 | TDFN6 |
| ABL014-10 | Dual | 1 | TDFN6 |
| ABL015-10 | Dual | 0.5 | TDFN6 |
| ABL016-10 | Dual | 0.3 | TDFN6 |
| Analog Gear-Tooth Sensor Output |
 |
AKL-Series digital sensors are configured as two-wire devices, where the supply current indicates a passing tooth. Three AKL-Series parts are available: the AKL001-12 is designed for gear teeth or encoders with a pitch of 2.5 to 6 mm, the AKL002-12 for a pitch of 1 to 2.5 mm, and the AKL003-12 for a pitch of 0.6 to 1.5 mm:
| AKL-Series Digital Gear-Tooth Sensors | |||
|
Part Number
|
Single or
Dual Bridge |
Element
Spacing (mm) |
Package
|
| AKL001-12 | Single | 1 | TDFN8 |
| AKL002-12 | Single | 0.5 | TDFN8 |
| AKL003-12 |
Single | 0.3 | TDFN8 |
| Digital Gear-Tooth Sensor Output |
 |
Sensor Reference Designs Download
Gear Tooth Sensor catalog section