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A1203LUA T A1203LUAT 620 1012 ND 6201012ND 620-1012
A1204 General Description
The Allegro® A1201, A1202, A1203 and A1204 Hall-effect bipolar switches are next-generation replacements and extension of the popular Allegro A3134, A3133, and A3132 bipolar switch product line. Overall, the A120x family, produced with BiCMOS technology, consists of continuous-time devices that feature fast power- on time and low-noise operation. Device programming is performed after packag- ing, to ensure increased switchpoint accuracy by eliminating offsets that can be induced by package stress. Unique Hall element geometries and low-offset ampli- fiers help to minimize noise and to reduce the residual offset voltage normally caused by device overmolding, temperature excursions, and thermal stress.
The A120x Hall-effect bipolar switches include the following on a single silicon chip: voltage regulator, Hall-voltage 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 auto- motive and motor commutation applications, without adding external components.
A1204 Maximum Ratings
Supply Voltage, VCC ..............................................30 V Reverse-Supply Voltage, VRCC ...........................30 V Output Off Voltage, VOUT.......................................30 V Reverse-Output Voltage, VROUT ....................... 0.5 V Output Current, IOUTSINK...................................25 mA Magnetic Flux Density, B .................................Unlimited Operating Temperature Ambient, TA, Range E............................40ºC to 85ºC Ambient, TA, Range L..........................40ºC to 150ºC Maximum Junction, TJ(max) ........................165ºC Storage Temperature, TS ..................65ºC to 170ºC
A1204 Features
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