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A1388

Allegro
Part Number A1388
Manufacturer Allegro
Description Linear Hall-Effect Sensor IC
Published Sep 19, 2016
Detailed Description A1388 and A1389 Linear Hall-Effect Sensor ICs with Analog Output Available in a Miniature, Low Profile Surface Mount Pac...
Datasheet PDF File A1388 PDF File

A1388
A1388

Overview
A1388 and A1389 Linear Hall-Effect Sensor ICs with Analog Output Available in a Miniature, Low Profile Surface Mount Package Features and Benefits • 5.
0 V supply operation • QVO temperature coefficient programmed at Allegro™ for improved accuracy • Miniature package options • High bandwidth, low noise analog output • High speed chopping scheme minimizes QVO drift across operating temperature range • Temperature-stable quiescent voltage output and sensitivity • Precise recoverability after temperature cycling • Output voltage clamps provide short circuit diagnostic capabilities • Undervoltage lockout (UVLO) • Wide ambient temperature range: –40°C to 150°C • Immune to mechanical stress • Enhanced EMC performance for stringent automotive applications Packages 3-pin SOT23-W 2 mm × 3 mm × 1 mm (suffix LH) 3-pin ultramini SIP 1.
5 mm × 4 mm × 3 mm (suffix UA) Description New applications for linear output Hall-effect sensors, such as displacement and angular position, require higher accuracy and smaller package sizes.
The Allegro A1388 and A1389 linear Hall-effect sensor ICs have been designed specifically to meet both requirements.
These temperature-stable devices are available in both surface-mount and through hole packages.
The accuracy of each device is enhanced via end-of-line optimization.
Each device features non-volatile memory to optimize device sensitivity and the quiescent voltage output (QVO: output in the absence of a magnetic field) for a given application or circuit.
This A1388 and A1389 optimized performance is sustained across the full operating temperature range by programming the temperature coefficient for both sensitivity and QVO at Allegro end-of-line test.
These ratiometric Hall-effect sensor ICs provide a voltage output that is proportional to the applied magnetic field.
The quiescent voltage output is adjusted around 50% of the supply voltage.
The features of these linear devices make them ideal for use in automotive and industrial applications...


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