A1171 View Datasheet(PDF) - Allegro MicroSystems
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A1171 Datasheet PDF : 10 Pages
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A1171
Micropower Ultrasensitive Hall Effect Switch
Applications
It is strongly recommended that an external bypass capacitor 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 technique. As is
shown in figure 3, a 0.1μF capacitor is typical.
Extensive applications information on magnets and Hall-effect
devices is available in the following notes:
• Hall-Effect IC Applications Guide, AN27701
• Hall-Effect Devices: Gluing, Potting, Encapsulating, Lead
Welding and Lead Forming AN27703.1
• Soldering Methods for Allegro Products (SMD and Through-
Hole), AN26009
All are provided in Allegro Electronic Data Book, AMS-702,
and on the Allegro Web site, www.allegromicro.com.
VS
CBYP
0.1 µF
Outputs
VOUTPS
VDD
A1171
VOUTPN
NC
SELECT
GND
VS
CBYP
0.1 µF
Outputs
VOUTPS
VDD
A1171
VOUTPN
NC
SELECT
GND
(a)
(b)
Figure 3. Typical Application Circuits: (a) Omnipolar operation, and (b) Unipolar Operation
Allegro MicroSystems, LLC
7
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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