A3421EKA Datasheet PDF | Allegro MicroSystems

Allegro MicroSystems A3421EKA

The A3421xKA and A3422xKA Hall-effect, direction-detection sensor ICs are a new generation of special-function devices that E1 E2 are capable of sensing the direction of rotation of a ring magnet. These transducers provide separate digital outputs that provide information on X X magnet rotation speed, direction, and magnet pole count. These devices eliminate the major manufacturing hurdles encountered in fine-pitch direction-detection applications, namely maintaining accurate mechani- LOGIC T VCC is a C 1 2 3 4 5 SUPPLY DIRECTION GROUND E1 OUTPUT SPEED 1xKA PRODUxKA; Dwg.

Part No.	A3421EKA
Datasheet	A3421EKA Download
Manufacturer	Allegro MicroSystems
Description	DIRECTION-DETECTION SENSORS
Buy	Stock & Price

ABSOLUTE MAXIMUM RATINGS

Th TI th ta Supply Voltage, VCC . . . . . . . . . . . . . 18 V Magnetic Flux Density, B . . . . Unlimited N by a Output OFF Voltage, VOUT . . . . . . . . VCC d Output Sink Current, IOUT . . . . . . . 30 mA O d r Package Power Dissipation, C ce te PD. . . . . . . . . . . . . . . . . . . . . . 500 mW IS la la Operating Temperature Range, TA Suffix ‘EKA’ . . . . . . . -40˚C to +85˚C p e Suffix ‘LKA’ . . . . . . -40˚C to +150˚C D e e Storage Temperature Range, R s TS . . . . . . . . . . . . . . . -65˚C to +170˚C cal location between the two active Hall elements. Here, the two Hall elements are photolithographically aligned to better than 1 µm, as contrasted with 100 µm or worse mechanical location tolerance when manufactured discretely. These highly sensitive, temperature-stable, magnetic transducers are ideal for use in digital-encoder systems in the harsh environments of automotive or industrial applications. The A3421xKA is a high-hysteresis device designed for low-resolution pulse counting while the A3422xKA is a high-sensitivity device optimized for use with high-density magnets.