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- MCS1806
MCS1806
3kVRMS Isolated Hall-Effect Current Sensor with 500VRMS Working Voltage, ±2.5% Accuracy
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Description
The MCS1806 is a linear Hall-effect current sensor for AC or DC current sensing. The Hall array is differential, which cancels out any stray magnetic field.
A primary conductor with a low resistance allows the current to flow close to the IC, which contains high-accuracy Hall-effect sensors. This current generates a magnetic field that is sensed at two different points by the integrated Hall-effect transducers. The magnetic field difference between these two points is then converted into a voltage that is proportional to the applied current. A spinning current technique is used for a low, stable offset.
The galvanic isolation between the pins of the primary conductive path and the sensor leads allows the MCS1806 to replace optoisolators and other isolation devices.
The MCS1806 requires a minimal number of readily available, standard external components. The device’s small SOIC-8 footprint saves board area and makes it well-suited for space-constrained applications.
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Features & Benefits
- 3.3V or 5V Single-Supply Options
- Immune to External Magnetic Fields via Differential Sensing
- 3kVRMS Minimum Isolation Voltage
- 500VRMS Maximum Working Voltage
- ±2.5% Total Accuracy
- 0.9mΩ Internal Conductor Resistance
- ±5A to ±50A Bidirectional Range
- Adjustable Bandwidth Up to 100kHz
- Ratiometric Output from Supply Voltage
- Output Proportional to the AC or DC Currents
- Factory-Trimmed for Accuracy
- No Magnetic Hysteresis
- Available in an SOIC-8 Package

Active Part Numbers:
MCS1806GS-3-05-Z MCS1806GS-3-05-P MCS1806GS-3-10-Z MCS1806GS-3-10-P MCS1806GS-3-20-Z MCS1806GS-3-20-P MCS1806GS-3-30-Z MCS1806GS-3-30-P MCS1806GS-3-40-Z MCS1806GS-3-40-P MCS1806GS-3-50-Z MCS1806GS-3-50-P MCS1806GS-5-05-Z MCS1806GS-5-05-P MCS1806GS-5-10-Z MCS1806GS-5-10-P MCS1806GS-5-20-Z MCS1806GS-5-20-P MCS1806GS-5-30-Z MCS1806GS-5-30-P MCS1806GS-5-40-Z MCS1806GS-5-40-P MCS1806GS-5-50-Z MCS1806GS-5-50-P
Part numbers ending in P and Z are the same parts. P and Z only indicates reel size.
Meaning of P & Z
MCS1806 Resources
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VIDEO
SMALLEST ISOLATED LINEAR HALL-EFFECT CURRENT SENSOR: MCS1806VIDEOThis linear, Hall-effect current sensor delivers 3kVRMS minimum isolation voltage and 500VRMS maximum working voltage. The MCS1806 is designed for a variety of applications requiring high isolation, and is immune to stray fields when in close proximity to other applications such as motors. It is highly integrated, requiring a minimal number of external components and comprising the smallest isolat...
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VIDEO
ULTRA-SMALL HALL-EFFECT CURRENT SENSOR: MCS1823VIDEOMPS’s linear, Hall-effect current sensor with over-current detection is designed for space-constrained designs, including motor control and automotive load detection and management applications. The MCS1823 series is ideal for non-isolated applications that require the combination of high-current monitoring and small form factor. Differential sensing ensures that the device is immune to external s...
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ARTICLE
DC FAST CHARGING SYSTEM: MAXIMIZING POWER DENSITY WITH AN LLC TRANSFORMER DRIVERARTICLEAs the world strives for carbon neutrality, electric vehicles (EVs) are rapidly taking market share from internal combustion engine vehicles. However, one of the issues with electric vehicles is range anxiety, as customers are unsure of how long they will be able to drive without the car needing to be charged. To combat this, governments around the world are massively investing in charging infrast...
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ARTICLE
ACCURATE CURRENT MEASUREMENT IN MODERN ELECTRONIC CIRCUITSARTICLEAs power electronic switching techniques advance, there is an increased need to accurately measure current for feedback control and system monitoring. There are several methods to achieve this, with each method having advantages and limitations. This article focuses on current measurement methods that require relatively high accuracy and bandwidth, such as those used to measure current on the inpu...
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USE CASE
CURRENT SENSOR USE CASE: SMART LIGHT DIMMERSUSE CASEIn this use case, we’ll consider our highly integrated current sensors in smart lighting dimmer controls. Intuitive, smart home controls are in high demand as more and more consumers desire products that are energy efficient. Smart home lighting has the ability to detect a person’s presence and sense the level of light in the room, so it can adjust the lights to preset preferences. ...
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POWERING 5G: PFC + LLC POWER SUPPLY SOLUTIONVIDEOThe development of 5G networks brings new and exciting challenges for the powering of base stations. The MPS solution for powering 5G combines high power and high efficiency within a 1U-sized rack mount casing. It is made up of two core blocks: a totem-pole topology power factor correction (PFC) stage, and a resonant LLC DC/DC converter that ensures stable and efficient power delivery to the outpu...
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ARTICLE
MPS'S ISOLATED MEDIUM- AND HIGH-POWER POWER SUPPLY PRODUCTSARTICLEOur lives are undergoing tremendous changes amidst the emergence of carbon neutrality, 5G, artificial intelligence (AI), and big data. The advent of the 5G era has transformed the design concepts of many power supply products, in that it has significantly increased the demand for medium- and high-power power supplies. Due to the increase in data traffic, communication frequency, and transmission ...
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VIDEO
CURRENT SENSORS FOR HIGH-CURRENT MONITORING AND HIGH ISOLATION APPLICATIONSVIDEOMPS’s MCS18xx current sensor series offers a tiny, single-IC solution that is ideal for applications requiring the combination of high-current monitoring and high isolation voltage between the high-current primary-side and the low-voltage side. These applications include phase inverters, solar panels, uninterruptable power supplies, appliances and white goods, AC/DC power supply control, and more....
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VIDEO
ISOLATED, HIGH-VOLTAGE ±5A TO ±50A CURRENT SENSORSVIDEOThe MCS18xx current sensor series offers high-current monitoring and high isolation voltage between the high-current primary side and the low-voltage side that communicates to the system. The load current is sensed through the Hall sensors, and is indicated as a linear analog voltage proportional to the load current. These sensors are ideal for phase inverters and phase current-sensing application...
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VIDEO
SIMPLE APPROACH TO ISOLATED HIGH-CURRENT MEASUREMENTVIDEOUnderstand the latest trends in smart isolated current sensing solutions. You will learn how industry demands for more power, greater efficiency, higher accuracy, smaller solutions, and easier construction are leading to innovative products that can meet these needs. Review Presentation Current Sensors
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VIDEO
HIGH-PERFORMANCE ANGLE, POSITION, AND CURRENT SENSINGVIDEOOverview of MPS position sensors and current sensors.
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REFERENCE DESIGN
RFSOC GEN2/GEN3 REFERENCE DESIGN WITH FULL PMBUS SUPPORTREFERENCE DESIGN -
REFERENCE DESIGN
RFSOC GEN2/GEN3 REFERENCE DESIGN USING DISCRETE REGULATORSREFERENCE DESIGN -
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RFSOC GEN2/GEN3 REFERENCE DESIGN USING MODULESREFERENCE DESIGN
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