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www.nve.com phone: 952-829-9217 fax: 952-829-9189
ABL Sensors
Single/Double Bridge Gear Tooth And Encoder Sensors
Features:
• Large Airgap
• Direct Analog Output
• DC (Zero Speed) Operation
• Sine / Cosine Outputs
• Precise Spacing and Phase Shifting Between Sensor Elements
• Excellent Temperature and Voltage Performance
• Small, Low-Profile Surface Mount Packages
Applications:
• Linear and Angular Speed Sensing
• Linear and Angular Position Sensing
• Direction Detection
Description:
The ABL-Series GT Sensors are differential sensor elements that provide an analog sinusoidal output
signal when used with a bias magnet and gear tooth or a magnetic encoder. These chips use NVE’s
proprietary GMR sensor elements featuring an extremely large output signal from the raw sensor
element, which is stable over the rated temperature and voltage range. As a result, ABL-Series GT
Sensors feature excellent airgap performance and an extremely stable operating envelope as well as the
robust reliability characteristics that NVE sensors are known for.
Three different standard spacings are available for use with fine and coarse pitch encoders and gear
teeth. Both single bridge and double bridge configurations are also available. Double bridges are used
to generate sine/cosine outputs. In addition to the standard spacings, NVE can provide custom spacings
and multiple sensor elements tailored to the individual customer’s application for a nominal design and
tooling charge. Contact NVE for further details.
For digital output applications, these sensors can be used with NVE’s DD001-12 signal processing IC
which converts their output into a 50% duty cycle modulated current signal. This IC allows placement
of the ABL sensor in a very small housing with wires running from the sensor to the signal processing
IC in a remote location. Thus ABL-Series sensors can be used in M8 and smaller housings.