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Description

New applications for linear output Hall effect sensors, such as displacement, angular position, and current measurement, require high accuracy in conjunction with small package size. The Allegro? A138x family of programmable linear Halleffect sensors 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.

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