40 kHz conventional Hall current sensor IC
MLX91211 Melexis
The MLX91211 is a second-generation medium-speed current sensor that senses the magnetic field generated by the current flowing through a conductor, be it a cable, a bus bar or a PCB trace in a contactless way.
Top features
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Linear Hall sensor optimized for AC and DC current sensing applications
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Supply voltage in the range of 3.135 V to 5.5 V
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Analog ratiometric output voltage
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Factory trimmed magnetic sensitivity and offset
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Medium speed sensing
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DC to 40 kHz bandwidth
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< 10 µs response time
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Fast startup time enabling power gating
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Miniature packages RoHS compliant & Green
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TSOT-3L (SE) surface mount
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TO92-3L (UA) through hole mount
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Suitable for lead free soldering profile up to 260 °C, MSL3 (SE) and MSL1 (UA)
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AEC-Q100 automotive qualified
Product description
The MLX91211 is a second-generation medium-speed current sensor that senses the magnetic field generated by the current flowing through a conductor, be it a cable, a bus bar or a PCB trace.
To minimize the susceptibility to external magnetic fields and maximizing the concentration of the magnetic field generated by the current flow, the sensor is typically placed inside a ferromagnetic core.
The sensor has an analog output ratiometric to its supply voltage (which can be in the range of 3.135 V to 5.5 V). The MLX91211 contains a voltage regulator for stable internal supply and optimum performances.
The output is proportional to the sensed magnetic field perpendicular to the package surface.
The device is pre-programmed with different sensitivity settings as a function of different current sensing ranges and features a factory-calibrated quiescent output voltage at 50% of the supply voltage.
The sensor is optimized for cost-sensitive applications, and comes in 2 variants:
- the ABT version with multi-temperature trimming of the sensitivity, and high accuracy
- the ABA version with default trimming, and standard accuracy
Features and benefits
-
Linear Hall sensor optimized for AC and DC current sensing applications
-
Supply voltage in the range of 3.135 V to 5.5 V
-
Analog ratiometric output voltage
-
Factory trimmed magnetic sensitivity and offset
-
Medium speed sensing
-
DC to 40 kHz bandwidth
-
< 10 µs response time
-
-
Fast startup time enabling power gating
-
Miniature packages RoHS compliant & Green
-
TSOT-3L (SE) surface mount
-
TO92-3L (UA) through hole mount
-
-
Suitable for lead free soldering profile up to 260 °C, MSL3 (SE) and MSL1 (UA)
-
AEC-Q100 automotive qualified
