Features and Benefits Description
? Continuous-time operation The Allegro(R) A1101-A1104 and A1106 Hall-effect switches
?Fast power-on time are next generation replacements for the popular Allegro
? Low noise 312x and 314x lines of unipolar switches. The A110x family,
? Stable operation over full operating temperature range produced with BiCMOS technology, consists of devices that
? Reverse battery protection feature fast power-on time and low-noise operation. Device
? Solid-state reliability programming is performed after packaging, to ensure increased
? Factory-programmed at end-of-line for optimum switchpoint accuracy by eliminating offsets that can be induced
performance by package stress. Unique Hall element geometries and low-
? Robust EMC performance offset amplifiers help to minimize noise and to reduce the
? High ESD rating residual offset voltage normally caused by device overmolding,
? Regulator stability without a bypass capacitor temperature excursions, and thermal stress.
The A1101-A1104 and A1106 Hall-effect switches include
the following on a single silicon chip: voltage regulator,
Hall-voltage generator, small-signal amplifier, Schmitt
Packages: 3 pin SOT23W (suffix LH), and trigger, and NMOS output transistor. The integrated voltage
3 pin SIP (suffix UA) 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
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