Product category: Analogue and Mixed Signal ICs
News Release from: Allegro MicroSystems Europe | Subject: A3213 and A3214
Edited by the Electronicstalk Editorial Team on 4 July 2003
Micropower omnipolar digital Hall-effect switches
A new family of micropower omnipolar digital switches combines ultrasensitive, pole-independent Hall-effect switches with latched digital outputs
The A3213 and the A3214 have nominal current consumption of only 300 and 5uA, respectively, and the devices are available for operation from battery voltages of 2.4-5.5V, making them ideal for use in almost all handheld portable electronic equipment. Other features include chopper-stabilised, high-sensitivity thresholds, superior temperature stability, low switch-point drift, and insensitivity to physical stresses.
This article was originally published on Electronicstalk on 4 July 2003 at 8.00am (UK)
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Hall-effect switches have latched digital outputs
The A3213 and A3214 from Allegro MicroSystems Europe are micropower omnipolar digital switches based on ultra-sensitive, pole-independent Hall-effect switches with latched digital outputs
The devices are offered in a single-inline (suffix UA) package, and the SOT23W surface-mount package (suffix LH).
In addition, Allegro's popular A3212 (designed for 2.5-3.5V operation) is now available in a new ultraslim micro leadframe MLP package (suffix EH).
The maximum height of this package is only 0.8mm, with a length of 2mm and width of 3mm.
All three of these low-power omnipolar parts incorporate a unique clocking scheme designed to reduce the average operating power requirements, making them ideally suited to the detection of open/closed positions in battery-operated equipment such as mobile telephones, pagers and laptop computers.
The patented omnipolar feature simplifies application assembly by allowing the device to detect the presence or absence of a magnetic field irrespective of the magnet's polarity.
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