a1181 Allegro MicroSystems, Inc., a1181 Datasheet - Page 3

• Manufacturer Part Number: a1181
• Description: Two-wire, Programmable, Chopper-stabilized, Unipolar Hall-effect Switch Microsystems
• Manufacturer: Allegro MicroSystems, Inc.

+I
TWO-WIRE, PROGRAMMABLE, UNIPOLAR HALL-EFFECT SWITCH FAMILY
0
Rev. 1.8 25 April 2003
Clock/Logi
c
0
IccHigh
A1180/2 Hysteresis Curve
Page 3
(PRELIMINARY INFORMATION – SUBJECT TO CHANGE)
Programmmin
g
Program /
Lock
B
Flux Density
rp
Logic
AMP
B
FUNCTIONAL BLOCK DIAGRAM
S/H
op
IccLow
LPF
+B
Offset
Adjust
+I
0
0
A1181/3/4 Hysteresis Curve
IccLow
Reg
115 Northeast Cutoff, Box 15036
Worcester, Massachus etts 01615-0036 [phone]
Copyright © 1993, 1995 Allegro MicroSystems, Inc.
B
To all
subcircuits
Flux Density
rp
("UA" ONLY-Pin 3)
Optional
GND
GND
B
op
Supply
IccHigh
+B