A3260 Datasheet, PDF (7/10 Pages) Allegro MicroSystems – Internal Current Regulator for 2-Wire Operation

3260
2-WIRE, CHOPPER-STABILIZED,
PRECISION HALL-EFFECT
BIPOLAR SWITCH
APPLICATIONS INFORMATION
It is strongly recommended that an external bypass capaci-
tor be connected (in close proximity to the Hall element ) between
the supply and ground of the device to reduce both external
noise and noise generated by the chopper-stabilization tech-
nique.
'UA' PACKAGE
X
0.95 V
–
+
0.1 µF
100 Ω
SUPPLY
Dwg. EH-011-2A
Extensive applications information for Hall-effect device is available in:
• Hall-Effect IC Applications Guide, Application Note 27701;
• Hall-Effect Devices: Soldering, Gluing, Potting, Encapsulating, and Lead Forming, Application Note 27703.1;
• Soldering of Through-Hole Hall-Sensor Dervices, Application Note 27703; and
• Soldering of Surface-Mount Hall-Sensor Devices, Application Note 27703.2.
More detailed descriptions of the chopper-stabilized circuit operation can be found in:
• Monolithic Magnetic Hall Sensor Using Dynamic Quadrature Offset Cancelation, Technical Paper STP 97-10; and
• Chopper-Stabilized Amplifiers With A Track-and-Hold Signal Demodulator, Technical Paper STP 99-1.
All are provided at
www.allegromicro.com
115 Northeast Cutoff, Box 15036
6
Worcester, Massachusetts 01615-0036 [phone]