A3250 ALLEGRO [Allegro MicroSystems], A3250 Datasheet - Page 2

• Manufacturer Part Number: A3250
• Description: Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect Switches
• Manufacturer: ALLEGRO [Allegro MicroSystems]

A3250-DS
Field-Programmable, Chopper-Stabilized, Unipolar Hall-Effect Switches
V+
VCC
Switching Due to ∆B
Hysteresis of ∆V
A3250
B
HYS
OUT
Output voltage in relation to sensed magnetic flux density in a
south polarity magnetic field of sufficient strength. Transition
through B
B+
Amp
Functional Block Diagram
V
V
A3250 and A3251
OUT(off)
OUT(on)(sat)
OP
Hysteresis Curves
must precede transition through B
Program/Lock
Programming
Logic
Low-Pass
Filter
Offset Adjust
Current Limit
Regulator
V+
RP
.
Switching Due to ∆B
Hysteresis of ∆V
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
A3251
GND
B
HYS
VOUT
OUT
B+
V
V
OUT(off)
OUT(on)(sat)
2