Allegro MicroSystems Europe has introduced two new families of high-performance low-noise Hall-effect current sensors featuring an isolation voltage of 2100 V r.m.s.. Each device is available in
±5 A, ±20 A or ±30 A versions, with corresponding sensitivity levels of 185, 100 or 66 mV/A.
The new devices, ACS712 (bidirectional) and ACS713 (unidirectional), have been developed to address the growing demand for low-cost, high-accuracy and compact current-sensing solutions with added functionality. The chip design has optimised parameters such as quiescent output voltage, sensitivity and temperature coefficient to minimise noise and total output error.
The combination of improved process performance, new design concepts and additional programming capability has resulted in a twofold reduction in noise compared with previous devices, says ST. The total output error is only 1,5% at room temperature and +4% in the industrial temperature range from -40 to
85°C. The devices also incorporate a filter pin that can be used to set the -3 dB point with a capacitor, reducing the number of external components required to improve sensor resolution.
The devices feature very fast response times, with nominal rise times for the 30 A device of 5 μs at an input current of 26,5 A and 2,5 μs at 10,6 A. Device accuracy is optimised through the close proximity of the magnetic signal to the Hall transducer. They also exhibit near-zero magnetic hysteresis.
The new sensors produce an analog signal output that varies linearly with the unidirectional or bidirectional AC or DC primary sensed current. The output has a positive slope when an increasing current flows through the primary copper conduction path used for current sensing. The terminals of the conductive path are electrically isolated from the sensor leads with an isolation voltage of 2,1 kV r.m.s.
The ACS712 and ACS713 come in surface mount SOIC8 package.
For more information contact Simon Churches, Arrow Altech Distribution, [email protected], +27 (0)11 923 9600.
Analysis of switch-mode power supply: inductor violations Altron Arrow
Editor's Choice Power Electronics / Power Management
Common switch-mode power supply (SMPS) design errors are discussed, and their appropriate rectification is specified, with details on complications that arise with the power stage design of DC-DC switching regulators.
Read more...Microsoft Windows IoT on ARM Altron Arrow
Computer/Embedded Technology
This expansion means that the Windows IoT ecosystem can now harness the power of ARM processors, known for their energy efficiency and versatility.
Read more...Microchip introduces ECC608 TrustMANAGER Altron Arrow
Circuit & System Protection
To increase security on IoT products and facilitate easier setup and management, Microchip Technology has added the ECC608 TrustMANAGER with Kudelski IoT keySTREAM, Software as a Service (SaaS) to its Trust Platform portfolio of devices, services and tools.
Read more...SolidRun unveils new SoM Altron Arrow
AI & ML
SolidRun and Hailo has unveiled a game-changer for engineers and AI product developers with the launch of their market-ready SoM, which packs the cutting-edge capabilities of the Hailo-15H SoC.
Read more...An evolutionary step in customisable logic Altron Arrow
DSP, Micros & Memory
Microchip Technology is offering a tailored hardware solution with the launch of its PIC16F13145 family of microcontrollers, which are outfitted with a new Configurable Logic Block module.
Read more...MCU for battery-powered applications Altron Arrow
DSP, Micros & Memory
Included in ST’s family of devices is the STM32U031, an ultra-low-power MCU featuring an ARM Cortex-M0+ 32-bit core running at up to 56 MHz.
Read more...LoRaWAN-certified sub-GHz module Altron Arrow
Telecoms, Datacoms, Wireless, IoT
The STM32WL5M from ST Microelectronics is the company’s first LoRaWAN-certified module which incorporates two cores, one of them being a wireless stack to optimise the creation of sub-GHz applications.
Read more...Dual-port USB-C power delivery solution Altron Arrow
Power Electronics / Power Management
Infineon’s CYPD7272-68LQXQ is the tray packing option of the company’s dual-port USB-C power delivery solution and features an integrated dual-port USB-C PD + DC-DC controller.
printer friendly version