3421 Datasheet, PDF (2/12 Pages) Allegro MicroSystems – HALL-EFFECT, DIRECTION-DETECTION SENSORS

3421 AND 3422
HALL-EFFECT,
DIRECTION-DETECTION
SENSORS
FUNCTIONAL BLOCK DIAGRAM
1 SUPPLY
UVLO
REG
POWER-ON
LOGIC
2 DIRECTION
3 GROUND
4 E1 OUTPUT
X
E1
E2
X
5 SPEED
+B
0
-B
+B BOP2
0
-B
OUT E1
OUT E2
(INTERNAL)
SPEED
(OUTE1 XOR OUT E2)
DIRECTION
Dwg. WH-012A
TIMING DIAGRAM
BOP1
BRP1
BRP2
Dwg. FH-018
td
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