The TMCS1148 is a galvanically isolated Hall-effect current sensor with industry leading isolation and accuracy. An output voltage proportional to the input current is provided with excellent linearity and low drift at all sensitivity options. Precision signal conditioning circuitry with built-in drift compensation is capable of less than 1.5% maximum sensitivity error over temperature and lifetime with no system level calibration, or less than 1% maximum sensitivity error including both lifetime and temperature drift with a one-time calibration at room temperature.
AC or DC input current flows through an internal conductor generating a magnetic field measured by integrated, on-chip, Hall-effect sensors. Core-less construction eliminates the need for magnetic concentrators. Differential Hall sensors reject interference from stray external magnetic fields. Low conductor resistance increases measurable current ranges up to ±160A while minimizing power loss and easing thermal dissipation requirements. Insulation capable of withstanding 5kVRMS, coupled with a minimum of 8.8mm creepage and clearance, provides high levels of reliable lifetime reinforced working voltage. Integrated shielding enables excellent common-mode rejection and transient immunity.
Fixed sensitivity allows the device to operate from a single 3V to 5.5V power supply, eliminating ratiometry errors and improving supply noise rejection.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | TMCS1148 Precision 550kHz Hall-Effect Current Sensor With Reinforced Isolation, Overcurrent Detection and Ambient Field Rejection datasheet | PDF | HTML | Apr 17, 2025 |
| Application brief | Thermal Analysis of the DVF Package of the TMCS1143 | PDF | HTML | Jun 26, 2026 | |
| Application note | A Comparison of Fused Lead Frame and Non-Fused Lead Frame Variants of Hall Effect Current Sensors (Rev. A) | PDF | HTML | Mar 26, 2026 | |
| Application brief | Deep Dive into IEC 61000-4-5 Surge Immunity Testing of the TMCS1143 Hall-Effect Current Sensor | PDF | HTML | Mar 11, 2026 |
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The TMCS-A-ADAPTER-EVM is an evaluation module (EVM) intended to facilitate rapid, convenient use of TMCS isolated Hall-effect precision current sense monitors that use the DVG, DVF, or DZP packages. This EVM allows the user push up to 90A current through the Hall-input side while measuring the (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (DVF) | 10 | Ultra Librarian |
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