The Allegro® A1210-A1214 Hall-effect latches are next generation replacements for the popular Allegro 317x and 318x lines of latching switches. The A121x 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 low-offset amplifiers help to minimize noise and to reduce the residual offset voltage nor- mally caused by device overmolding, temperature excursions, and thermal stress.
The A1210-A1214 Hall-effect latches 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 automotive and industrial motor commutation applications, without adding external components. All devices in the family are identical except for magnetic switchpoint levels.
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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
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upply 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
Post a Buying Lead
Required Field 
