A1211LUA-T【PDF 10/14 页】IC LATCH HALL EFFECT 3-SIP

Continuous-Time Latch Family

A1210, A1211,

A1212, A1213,

and A1214

Allegro MicroSystems, LLC

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

Figure 2. Continuous-Time Application, B < B

.. This figure illustrates the use of a quick cycle for chopping V

in order to conserve battery power.

Position 1, power is applied to the device. Position 2, the output assumes the correct state at a time prior to the maximum Power-On Time, t

PO(max)

The case shown is where the correct output state is HIGH

. Position 3, t

PO(max)

has elapsed. The device output is valid. Position 4, after the output is

valid, a control unit reads the output. Position 5, power is removed from the device.

OUT

Output Sampled

PO(max)

ADDITIONAL APPLICATIONS INFORMATION

Extensive applications information for Hall-effect devices is

available in:

" Hall-Effect IC Applications Guide, Application Note 27701

" Hall-Effect Devices: Gluing, Potting, Encapsulating, Lead

Welding and Lead Forming, Application Note 27703.1

" Soldering Methods for Allegros Products SMT and Through-

Hole, Application Note 26009

All are provided in Allegro Electronic Data Book, AMS-702,

and the Allegro Web site, www.allegromicro.com.

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