|
In This IssueSeptember 29, 2026
• ABT-Series TMR Gear-Tooth Sensors
• Available Bias Magnets
• Sensor Reference Design Corner
New ABT-Series TMR Gear-Tooth Sensors
NVE has launched a new generation of ABT-Series dual-channel Tunneling Magnetoresistance (TMR) gear-tooth sensors for precise motion, speed, and position sensing.
Large, Low-Distortion Signals
The new sensors provide a remarkable 600 mVp-p/V typical full-bridge output, with excellent linearity and low hysteresis.
Precise Sine and Cosine Outputs
Two phase-shifted differential outputs provide incremental position and direction information. The low-impedance, high-span outputs can connect directly to standard ADC or microcontroller inputs without external signal conditioning.
Common-Mode Field Rejection
Eight phase-shifted TMR elements reject common-mode magnetic fields from external sources, including bias-magnet placement.
Best-in-Class Specifications
• 600 mVp-p/V typical full-bridge output
• 1% maximum sensor-element linearity
• 1% maximum hysteresis
• Operating frequency to 350 kHz
• Flexible 0 to 10 V supply range
• −50 to 150°C operating range
• Compact MSOP8 and SOIC16 packages
Applications
• Motion, speed, and position sensing
• Linear and rotational encoders
• Closed-loop servo systems
• Gear-tooth and ferrous-metal detection
A Full Product Line
Seven pitch-matched versions cover common gear modules from 0.2 to 2:
*Special order for first-time build. Contact orders@nve.com for more information.
Evaluation Boards
ABT00x-00E-EVB01 evaluation boards are available with pre-soldered sensors. A 6.35 mm depth-controlled hole on the back accommodates a bias magnet for fast evaluation. Click the evaluation-board part numbers in the table for product information and ordering.
Available Bias Magnets
NVE stocks ceramic and neodymium bias magnets for evaluating ABT-Series sensors. Click a part number for product information and ordering.
| NVE Part # | Material | Diameter | Thickness | Shape |
| 12031 | C5/Y25 | 8 mm | 3.2 mm | Disc |
| 12216 | C5/Y25 | 6 mm | 4 mm | Disc |
| 12217 | C5/Y25 | 3.5 mm | 4 mm | Disc |
| 12647 | N42 | 0.25" | 0.125" | Disc |
| 12650 | C5/Y25 | 10 mm | 5 mm | Bar |
Download the ABT-Series Datasheet »
Contact NVE Applications Engineering »
|
Sensor Reference Design Corner
|  ABT-Series Signal Processing Circuits
ABT-Series sensors have large, low-impedance sine and cosine outputs that simplify signal processing. These two reference designs provide convenient analog amplification or digital speed and direction outputs. | |
Amplified Analog Outputs
A simple dual-amplifier circuit increases the signal span while preserving the phase-shifted outputs for precision position measurements.
Digital Speed and Direction Outputs
A dual comparator and flip-flop generate digital speed and direction outputs, with one speed cycle per tooth.
|
|
