RJM2120 · Differential Hall Current Sensor
Differential Hall architecture with strong common-mode stray-field immunity. Pin-to-pin compatible with ACS724 / MLX91220 for traction inverter and power-supply current sensing.
RJM2120 uses differential Hall technology: the differential structure rejects the common-mode interference caused by external stray magnetic fields, keeping current measurement stable in electrically noisy environments such as traction drives and power supplies.
It is offered in SOP8 / SOW10 / SOW16 packages to suit different isolation and creepage requirements, and is pin-compatible with ACS724 / MLX91220 for direct replacement designs in 12 V / 48 V automotive systems, shortening the customer qualification cycle.
Datasheets & documents
Datasheets, application notes, user manuals and selection guides — each item is labelled with its type and how to get it. Public documents download directly; documents marked confidential require a separate request, and we will confirm your project details before releasing them.
Documents for this device are not published online yet
Datasheets, application notes, user manuals and selection guides can all be requested through the link below — our application engineers will respond within one working day. Public documents for released devices are being added to this page on an ongoing basis.
Request datasheet / documentsSpecifications
| Technology | Differential Hall |
|---|---|
| Package options | SOP8 / SOW10 / SOW16 |
| Pin-compatible with | ACS724 / MLX91220 (P2P) |
| System voltage | 12 V / 48 V automotive systems |
Key features
- Differential architecture rejects common-mode magnetic interference
- Multiple packages cover different isolation and creepage requirements
- Pin-compatible with mainstream devices, shortening hardware re-spin cycles
Typical applications
- Phase current sensing in traction drives
- On-board DC/DC and OBC current sensing
- Industrial variable-frequency drives and servo drives
Application areas
This device is used across the application areas below — open any of them for the full solution and recommended part numbers.
Powertrain
Covering transmission, fuel tank, engine peripherals and traction systems — chip solutions for e…
Thermal Management
Covering air conditioning, PTC heaters, valves and pumps — a one-stop chip solution for electron…
Industry & Robotics
Current sensing, position feedback and speed measurement for servo drives, robot joints, industr…
Other devices in this series
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Programmable sensitivity from 0.5 mV/G to 11.5 mV/G, 240 kHz bandwidth, 2.2 µs response and ±1% sensitivity error over the full temperature range — built for three-phase traction inverter current sensing.
TMR 3D Position / Angle Sensor
TMR tunnel-magnetoresistance analog output with highly sensitive 3D magnetic field detection for angle and position measurement. Pin-to-pin compatible with TDK TAS2143.
IMC / 3D Hall Position Sensor
IMC integrated magnetic concentrator plus vertical Hall technology, heterogeneously integrated for high-sensitivity measurement with on-chip algorithms delivering high-accuracy angle output.
Automotive-grade Vertical / Planar Hall Latch
3.3 V–24 V wide supply, 40 V load-dump and reverse-polarity protection, symmetric switching points producing a near-50% duty square wave — an ideal choice for motor commutation.
Need selection support or samples?
Our application engineers work from your system design and provide magnet selection, field simulation, motor system support and reference designs.