Continuous-Time Latch Family
A1210, A1211,
A1212, A1213,
and A1214
10
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
RP
.. This figure illustrates the use of a quick cycle for chopping V
CC
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.
V
CC
V
OUT
Output Sampled
1
5
4
2
t
t
t
PO(max)
3
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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相关PDF资料
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