Hall-effect current sensor IC is optimised for 3.3 V operation at high temperatures
May 22, 2012 // Christoph Hammerschmidt
The new ACS759 from Allegro MicroSystems is a high-current/high-temperature linear Hall-effect current sensor IC that provides an economical and precise solution for AC or DC current sensing in 3.3 V supply applications. The device is targeted at the automotive and industrial markets.
The device consists of a precision, low-offset linear Hall sensor circuit with a copper conduction path located near the die. Applied current flowing through this copper conduction path generates a magnetic field which is sensed by the integrated Hall IC and converted into a proportional voltage.
Device accuracy is optimised through the close proximity of the magnetic signal to the Hall transducer. A precise, proportional voltage is provided by the low-offset, chopper-stabilised BiCMOS Hall IC, which is programmed for accuracy at the factory.
High-level immunity to current conductor dV/dt and stray electric fields, offered by Allegro proprietary integrated shield technology, guarantees low ripple at the output and low-offset drift in high-side high-voltage applications. The output of the device has a positive slope when an increasing current flows through the primary copper conduction path used for current sensing.
The internal resistance of this conductive path is typically 100 microhms, providing low power loss. The thickness of the copper conductor allows for 200 A continuous current sensing applications and survival to much higher transient currents.
The terminals of the conductive path are electrically isolated from the sensor leads, allowing the ACS759 family of sensors to be used in applications requiring electrical isolation without the use of opto-isolators or other costly isolation techniques. The device is fully calibrated prior to shipment from the factory.
Typical applications include motor control, load detection and management, power supply and DC/DC converter control, inverter control, and overcurrent fault detection.
The ACS759 sensor IC is lead (Pb) free. All leads are plated with 100% matt tin, and there is no lead inside the package. The heavy-gauge leadframe is made of oxygen-free copper. The device is available in a small 5-pin CB package with easy mounting capability.
Please click here to download a copy of the data sheet: http://www.allegromicro.com/en/Products/Current-Sensor-ICs/Fifty-To-Two-Hundred-Amp-Integrated-Conductor-Sensor-ICs/ACS759.aspxAll news
Xray sensor startup raises funds
May 27, 2015
MultiX SA (Paris, France), a company developing sensors for spectroscopic Xray imaging for airport security and non-destructive ...
IoT is driving an analog opportunity
Implanted biosensor can be wirelessly charged
Pushing emulation beyond functional tests
Sensor choices power industrial Internet innovation
Software collaboration enables software quality compliance
May 26, 2015
Lauterbach's TRACE32 debug solution has been integrated with test automation platform VectorCAST to enable development, test, ...
Why NOW is the time to invest in security
eDP: the next rung on display control's evolutionary ladder
Daimler, Qualcomm announce strategic partnership
- Integrating GPS into consumer products
- Controlling LED Lighting Using Triacs and Quadracs
- Automotive Designs Demand Low EMI Synchronous Buck Converters
- Smart Capacitive Design Tips
InterviewCEO interview: What's next after Tower's turn-around?
May 2015 marks the tenth anniversary of Russell Ellwanger taking over as CEO of speciality foundry Tower Semiconductor Ltd. (Migdael Haemek, Israel), which now trades as TowerJazz. And so EE Times Europe ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
In this month's reader offer, Analog Devices is giving away five Blackfin Low-Power Imaging Platform (BLIP) Development Systems (ADZS-BF707-BLIP2), worth 199 dollars each, for EETimes Europe's readers to win.
Targeting demanding ultra-low-power, real-time applications for image sensing and advanced audio, the development platform leverages the company’s ADSP-BF707BBCZ-4 Blackfin processor as...MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.