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