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A1102

Allegro MicroSystems
Part Number A1102
Manufacturer Allegro MicroSystems
Description Continuous-Time Switch
Published Sep 30, 2009
Detailed Description A1101, A1102, A1103, A1104, and A1106 Continuous-Time Switch Family FEATURES AND BENEFITS • AEC-Q100 automotive qualif...
Datasheet PDF File A1102 PDF File

A1102
A1102

Overview
A1101, A1102, A1103, A1104, and A1106 Continuous-Time Switch Family FEATURES AND BENEFITS • AEC-Q100 automotive qualified • Continuous-time operation □□Fast power-on time □□Low noise • Stable operation over full operating temperature range • Reverse battery protection • Solid-state reliability • Factory-programmed at end-of-line for optimum performance • Robust EMC performance • High ESD rating • Regulator stability without a bypass capacitor Packages: 3-pin SOT23W (suffix LH) 3-pin SIP (suffix UA) LH: A1101, A1102, A1103, A1104, and A1106 Not to scale UA: A1101, A1102, A1103, and A1104 UA: A1106 DESCRIPTION The Allegro™ A1101-A1104 and A1106 Hall-effect switches are next generation replacements for the popular Allegro 312x and 314x lines of unipolar switches.
The A110x family, produced with BiCMOS technology, consists of devices that feature fast power-on time and low-noise operation.
Device programming is performed after packaging, to ensure increased switchpoint accuracy by eliminating offsets that can be induced by package stress.
Unique Hall element geometries and lowoffset amplifiers help to minimize noise and to reduce the residual offset voltage normally caused by device overmolding, temperature excursions, and thermal stress.
The A1101-A1104 and A1106 Hall-effect switches include the following on a single silicon chip: voltage regulator, Hallvoltage generator, small-signal amplifier, Schmitt trigger, and NMOS output transistor.
The integrated voltage regulator permits operation from 3.
8 to 24 V.
The extensive on-board protection circuitry makes possible a ±30 V absolute maximum voltage rating for superior protection in automotive and industrial motor commutation applications, without adding external components.
All devices in the family are identical except for magnetic switchpoint levels.
The small geometries of the BiCMOS process allow these devices to be provided in ultrasmall packages.
The package styles available provide magnetically op...


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