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Hall Effect Linear Current Sensor Broadcom ACHS-7122-500E for Industrial and Commercial Applications

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Hall Effect Linear Current Sensor Broadcom ACHS-7122-500E for Industrial and Commercial Applications

working temperature : -40℃~+110℃

Current Range : 20A

Voltage - Supply : 4.5V~5.5V

Band Width : 80kHz

Current Terminal Resistance : 0.7mΩ

Response Time (tr) : 4us

Sensitivity : 100mV/A

Bidirectional Current Detection : Support

Description : 20A 100mV/A SOP-8 Current Sensors RoHS

Mfr. Part # : ACHS-7122-500E

Model Number : ACHS-7122-500E

Package : SOP-8

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Broadcom ACHS-712x Series: Fully Integrated Hall Effect Linear Current Sensor ICs

The Broadcom ACHS-7121/7122/7123 product series represents a fully integrated, Hall Effect-based isolated linear current sensor family. Designed for accurate AC or DC current sensing, these devices are ideal for industrial, commercial, and communications systems. Each sensor features a precise, low-offset, linear Hall circuit integrated with a low-resistance copper conduction path (0.7 m typical) for efficient current sampling with minimal power loss. The output voltage is directly proportional to the applied current, offering a ratiometric output from the supply voltage. With a compact SO-8 package, these sensors meet worldwide regulatory safety standards and provide robust isolation (3 kVRMS).

Product Attributes

Brand: Broadcom
Technology: Hall Effect-based
Isolation Voltage: 3 kVRMS
Package: SO-8
Certifications: UL, CSA

Technical Specifications

Model	Current Range	Output Sensitivity (Typical)	Primary Conductor Resistance (Typical)	Operating Temperature Range	Supply Voltage	Bandwidth (Typical with 1 nF filter)	Total Output Error (Typical)	Common-Mode Transient Immunity (Typical)
ACHS-7121	10A	185 mV/A	0.7 m	40C to 110C	5.0V	80 kHz	1.5%	>25 kV/s
ACHS-7122	20A	100 mV/A	0.7 m	40C to 110C	5.0V	80 kHz	1.5%	>25 kV/s
ACHS-7123	30A	66 mV/A	0.7 m	40C to 110C	5.0V	80 kHz	1.5%	>25 kV/s

Key Features

Wide Operating Temperature: 40C to 110C
Low primary conductor resistance: 0.7 m typ.
Output voltage proportional to AC or DC currents
Ratiometric output from supply voltage
Single supply operation: 5.0V
Low-noise analog signal path
Factory-trimmed for accuracy
Extremely stable output offset voltage
Near zero magnetic hysteresis
Small footprint, low-profile SO-8 package
Worldwide Safety Approval: UL, CSA (Isolation Voltage 3 kVRMS, 1 minute)

Applications

Low-power inverter current sensing
Motor phase and rail current sensing
Solar inverters
Chargers and Converters
Switching Power Supplies

2410010204_Broadcom-ACHS-7122-500E_C691912.pdf

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