Chopper-Stabilized Precision

Vertical Hall-Effect Latch

A1260

8

Allegro MicroSystems, LLC

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

V

S

C

BYP

0.1 µF

V

DD

GND

GND

R

LOAD

Sensor

Output

A1260

OUT

Figure 4: Typical Application Circuit

APPLICATIONS

It is strongly recommended that an external capacitor be con-

nected (in close proximity to the Hall-effect sensor IC) between

the supply and ground of the device to reduce both external noise

and noise generated by the chopper stabilization technique. As

shown in Figure 4, a 0.1 µF capacitor is typical.

Extensive applications information on magnets and Hall-effect

sensors is available in:

• Hall-Effect IC Applications Guide, AN27701,

• Hall-Effect Devices: Guidelines For Designing Subassemblies

Using Hall-Effect Devices AN27703.1

• Soldering Methods for Allegro’s Products – SMT and Through-

Hole, AN26009

All are provided on the Allegro Web site:

www.allegromicro.com