MDT Magnetic Sensors and Components

Industrial magnetic sensor integrated circuits from MultiDimension Technology (MDT) utilizing tunneling magnetoresistance for automated production machinery, servo drives and robotics. Technical selection by component part number.

TMR magnetic switch sensors: digital sensor series TMR1102, TMR1202, TMR1302

MDT digital magnetic switch sensors based on tunneling magnetoresistance for non-contact position sensing, limit stops and door interlocks. These integrated circuits feature ultra-low power consumption from 1.5 microamps, frequency response up to 5 kHz and thermal stability in compact packages.

Ultra-low current consumption from 1.5 microamps at 1.8 to 5.5 volts
High frequency switching response up to 5 kHz for high-speed automated machinery
Bipolar latching and unipolar digital outputs in standard SOT23-3 and TO92S housings
Non-contact solid-state replacement for reed switches and legacy Hall sensors

TMR angle sensors and rotary encoders: TMR3001, TMR3002, TMR3016 series

High-precision MDT rotary angle sensors for 360-degree absolute angular position measurement in servo drives, robotic joints and automation equipment. Sensors generate differential sine and cosine signals with high repeatability and generous mechanical air gap tolerance during alignment.

Full 360-degree absolute angular position measurement range without dead zones
Differential analog sine and cosine output with high thermal drift stability
Generous mechanical tolerance to air gap variations and assembly misalignment
Selection of TMR3001, TMR3002 and TMR3016 sensor ICs for rotary mechanisms

Linear magnetic field sensors: TMR2102, TMR2305, TMR2701, TMR2905 series

High-sensitivity MDT linear magnetic sensors utilizing full Wheatstone bridge circuits for precise linear displacement tracking, current monitoring and non-destructive testing. Devices feature ultra-low intrinsic magnetic noise, wide dynamic range and negligible hysteresis across operating limits.

Full Wheatstone bridge TMR circuit with linear differential voltage output
Sub-nanotesla noise floor performance in TMR2905 series for high-sensitivity tasks
Three-axis sensing solutions in TMR2305 series housed in compact LGA packaging
Deliverable in SOP8, DFN8L and bare die formats for high-density electronic boards

TMR gear speed and tooth profile sensors: TMR4001, TMR4M0x series

Specialized MDT gear speed sensors for rotational velocity, direction sensing and tooth profiling on ferromagnetic gears in gearboxes, machine tool spindles and motor drives. Units deliver stable switching from zero speed up to tens of kilohertz without phase distortion.

True zero-speed rotational detection for ferromagnetic gears and target wheels
Integrated internal back-bias magnet configuration for reliable tooth profile detection
High mechanical resilience against vibration shocks and lubricant spray environments
Selection of TMR4001 variants matching gear tooth pitch and mounting bore geometry

TMR magnetic scale and linear grid sensors: TMR4101, AMR4020V series

High-precision MDT magnetic scale sensor heads for magnetic tape and linear scales delivering micron accuracy in machine tool axes, optical stages and positioning platforms. The differential gradiometric design cancels stray environmental magnetic fields while maintaining exact displacement data.

Micron-grade displacement precision across unrestricted linear travel lengths
Differential gradiometer topology providing high immunity to external stray magnetic fields
Ultra-thin DFN4L housing (1.32 mm x 0.66 mm x 0.3 mm) for restricted physical enclosures
Compatible matching with magnetic tapes of diverse pole pitches for CNC axes

AGV magnetic navigation modules and current sensors: AGM-100, TMR7303, TMR7502 series

Factory-ready MDT magnetic track guide modules for autonomous mobile robots (AGV/AMR) alongside isolated TMR current sensors. Guide modules track magnetic path strips with millimeter precision, while current sensors provide galvanic isolation and high bandwidth monitoring in motor inverters.

Precision trajectory tracking along magnetic tape guides for autonomous warehouse AGVs
Galvanically isolated direct and alternating current monitoring for power drive circuits
Broad signal bandwidth and rapid transient response for drive inverter protection
Industrial bus communication protocols for direct linking into host controller logic

Selecting MDT magnetic sensors by component marking and circuit layout

Accurate identification of MultiDimension Technology sensor integrated circuits begins with the top-side package marking, board bill of materials or schematic diagram designations.

Within MDT digital switch families including TMR1102, TMR1202 and TMR1302, variants differ across magnetic operating thresholds, release points, output stages (push-pull CMOS versus open-drain configurations) and operational voltage tolerances.

Our engineering specialists verify pin-to-pin compatibility, supply current ceilings and operating temperature ratings against manufacturer engineering documentation.

We ensure that the designated replacement part matches the electrical requirements of the host machinery board and environmental demands of the industrial facility.

Signal verification and position sensor replacement in servo drives

Rotary feedback failures in automated servo drives and machine tool indexing heads typically produce irregular encoder counts, drive fault trips or tracking offset drift.

Evaluating MDT TMR3001 and TMR3002 angle sensors involves probing differential sine and cosine analog outputs with an oscilloscope while the drive shaft rotates through its operational velocity range.

When thermal drift, electrical gate breakdown or mechanical shock damage is confirmed on the sensor board, a fresh component is installed with precise rotational alignment.

Timely scheduled sensor replacement avoids catastrophic production line stoppages and preserves positional repeatability during automated machining.

Mechanical air gap adjustment and installation tolerances for magnetic sensors

Reliable detection performance of MDT magnetoresistive sensor integrated circuits depends upon maintaining the specified mechanical air gap between the active chip face and the target permanent magnet.

Exceeding recommended working distance weakens the magnetic flux density below the comparator trip point, while insufficient spacing risks mechanical collision during thermal expansion.

In back-biased gear speed sensors such as the TMR4001, technicians must confirm radial clearance relative to the gear tooth crests. Securing the sensor body into its mounting flange with the specified tightening torque prevents displacement under severe industrial machinery vibration.

Shielding and electrical noise mitigation for weak-field linear sensors

Industrial environments containing variable frequency drives, induction welding stations and high-voltage power switchgear generate severe electromagnetic interference across low-level sensor signal lines.

Deploying sensitive linear sensors from the TMR2102 and TMR2905 series demands disciplined wiring architecture and proper ground termination.

Differential signal traces and cable runs must utilize individually shielded twisted pairs routed apart from high-current motor leads, with the shield grounded strictly at the receiving analog front-end.

This configuration prevents ground loop currents and maintains high signal integrity for sub-nanotesla measurement resolution.

Integrating TMR4101 magnetic scale reading heads into CNC motion systems

Employing TMR4101 precision magnetic scale sensor heads along linear axis rails provides sub-micron displacement feedback for machine tools and robotic positioning stages.

Unlike optical glass encoders, magnetic scale technology tolerates cutting coolant splashes, fine metal particulate and oil mist without losing position tracking.

During head alignment, technicians verify parallel orientation along the magnetic tape pole pitch and calibrate the quadrature output signals fed into the interpolator circuitry.

The inherent differential gradiometer structure suppresses external stray fields, ensuring high positioning precision over long machine travel runs.

AGV magnetic guidance sensor calibration and track tuning on factory floors

In automated logistics facilities, automated guided vehicles (AGVs) navigate autonomously by detecting floor-mounted magnetic guidance tape.

MDT AGM-100 series navigation modules incorporate an array of precision magnetic sensors that calculate lateral deviation from the guide path with millimeter accuracy.

Commissioning the guidance module entails zero-point sensor balancing, verifying detection of stop markers and tuning digital filter parameters within the vehicle onboard motion computer.

This calibration ensures smooth cornering around curved path segments and repeatable stopping at loading docking stations.

MDT and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of MDT and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.