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A1381 Fiches technique(PDF) 1 Page - Allegro MicroSystems |
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A1381 Fiches technique(HTML) 1 Page - Allegro MicroSystems |
1 / 18 page A1381-DS, Rev. 9 Features and Benefits ▪ Customer programmable offset, sensitivity, sensitivity temperature coefficient, and polarity ▪ Programmability at end-of-line ▪ Ratiometric sensitivity, quiescent voltage output, and clamps for interfacing with application DAC ▪ Temperature-stable quiescent voltage output and sensitivity ▪ Precise recoverability after temperature cycling ▪ Output voltage clamps provide short circuit diagnostic capabilities ▪ Wide ambient temperature range: –40°C to 150°C ▪ Immune to mechanical stress ▪ Miniature package options Functional Block Diagram Not to scale A1381, A1382, A1383, and A1384 Continued on the next page… Packages: 3 pin SOT23W (suffix LH), and 3 pin SIP (suffix UA) Programmable Linear Hall Effect Sensor ICs with Analog Output Available in a Miniature Thin Profile Surface Mount Package Amp To all subcircuits Out VCC V+ VOUT (Programming) GND Gain Gain Temperature Coefficient Offset Trim Control Hall Drive Circuit CBYPASS Description New applications for linear output Hall effect sensing, such as displacement, angular position, and current measurement, require high accuracy in conjunction with small package size. TheAllegro®A138x family of programmable linear Hall effect sensor ICs was designed specifically to achieve both goals. These temperature-stable devices are available in a miniature surface mount package (SOT23-W) and an ultramini through- hole single-in-line package. The accuracy of these devices is enhanced via programmability on the output pin for end-of-line optimization without the added complexity and cost of a fully programmable device. These ratiometric Hall effect devices provide a voltage output that is proportional to the applied magnetic field. Both the quiescent voltage output and magnetic sensitivity are user- adjustable. The quiescent voltage output can be set around 50% of the supply voltage, and the sensitivity adjusted between 2 mV/G and 9 mV/G over the device family. Programming selections also exist for output polarity and temperature compensation. The features of this linear family make it ideal for high accuracy requirements of automotive and industrial applications, and performance is guaranteed over an extended temperature range, –40°C to 150°C. |
Numéro de pièce similaire - A1381 |
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Description similaire - A1381 |
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