سنسور و مبدل سنسور جریان

Product Attributes

Introduction

Broadcom's ACHS-719x (±10A to ±50A) is a fully integrated, Hall effect-based isolated linear current sensor designed for AC or DC current sensing in industrial, commercial, and communications systems. Each ACHS-719x IC contains a precise, low-offset linear Hall circuit with a copper conduction path located near the surface of the die. Current flowing through this copper conduction path generates a magnetic field, which a differential Hall sensor converts into a proportional voltage. Due to the close proximity of the magnetic signal to the Hall sensor, the device's accuracy is optimized across the full operating ambient temperature range. The low-offset, chopper-stabilized CMOS Hall IC delivers a precise proportional voltage and is accuracy-programmed after packaging. As current increases (flowing from pins 1 and 2 to pins 3 and 4, the path used for current sensing), the device output has a positive slope (> VOUT(Q)). The typical internal resistance of this conduction path is 0.7 mΩ, enabling low power dissipation. The terminals of the conduction path are electrically isolated from the signal pins (pins 5 through 8). The device is offered in a compact surface-mount SO-8 package and complies with worldwide regulatory safety standards.

Features

• Wide operating temperature range: -40°C to +110°C
• Internal conductor resistance: typical 0.7 mΩ
• Sensing current range: ±10A ~ ±50A
• Output sensitivity: 40mV/A to 185mV/A
• Output voltage proportional to AC or DC current
• Output voltage proportional to supply voltage
• Single supply operation: 5.0V
• Low noise analog signal path
• Device bandwidth set via new FILTER pin — typical bandwidth 80kHz with 1nF filter capacitor
• Factory calibrated for accuracy
• Extremely stable output offset voltage
• Near-zero hysteresis
• Maximum output error ±6.0% over full operating ambient temperature range TA
• Common mode transient immunity >25 kV/μs
• Small, low-profile SO-8 package
• Global safety certifications: UL/cUL, IEC/EN 62368-1 — Isolation voltage: 3 kVrms, 1 minute

Applications

• Low-power inverter current sensing
• E-bikes
• Motor phase current and bus current sensing
• Solar inverters
• Chargers and converters