سنسور و مبدل سنسور جریان

Product Attributes

Introduction

HX723 is a high- performance Hall effect current sensor known for its precision, excellent linearity, and temperature stability. It measures both DC and AC currents, making it suitable for industrial, consumer, and communication applications. The internal structure of HX723 features a low- noise linear Hall circuit with a low impedance main current wire. The input current flows through an internal 0.9mΩ wire, generating a magnetic field that induces an electrical signal in the Hall circuit. This signal is processed to produce a usable voltage output. The sensor's low impedance wire minimizes power loss and heat dissipation while providing inherent insulation with a basic working isolation voltage of 424VRMS and an insulation withstand voltage of 3500VRMS. Utilizing advanced BiCMOS technology, the linear Hall circuit includes high- sensitivity components such as the Hall sensor group, preamplifier, common mode suppression circuit, temperature compensation unit, oscillator, dynamic offset cancellation circuit, and amplifier output module. In the absence of current, the static output is at 50% VCC. With a 5V supply voltage, the output varies linearly between 0.2V and 4.8V with up to 0.1% linearity. Additionally, HX723 integrates a differential common mode rejection circuit to prevent external interference from affecting chip output; its dynamic offset elimination ensures stable sensitivity against external pressure or packaging stress. Packaged in SOP8 format and operating within - 40 to +125°C range, HX723 complies with RoHS regulations.

Features

• Providing a zero current reference output of 0.5VCC enables more flexible application modes.
• Provide multiple range options, including 5A, 10A, 20A, 40A and 50A, with a wide range of applications.
• It offers high isolation and voltage resistance, with a safe isolation voltage of 3500VRMS between wire and signal pins.
• Low loss with a wire resistance of just 0.9mΩ minimizing power loss and heat dissipation.
• High bandwidth, up to 250kHz, with a step response time of 1.2μs.
• The error at room temperature is 0.5% and the error over the entire temperature range is ±3%.
• It has good temperature stability and adopts Hall signal amplification circuit and temperature compensation circuit.
• Adopting a differential Hall structure, it has strong resistance to external magnetic interference.
• Has the ability to resist mechanical stress, and magnetic parameters will not shift due to external pressure.
• ESD (HBM) has an anti- static ability of 4000V.