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A1190-F Datasheet Preview

A1190-F Datasheet

Two-Wire Hall-Effect Switches

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A119x and A119x-F
Programmable, Chopper-Stabilized, Two-Wire Hall-Effect Switches
FEATURES AND BENEFITS
▪ Choice of factory-set temperature coefficient (TC) for use
with ferrite or rare-earth magnets
▪ Field programmable for optimized switchpoints
▪ AEC-Q100 automotive qualified
▫ On-board voltage regulator: 3 to 24 V operation
▪ High-speed, 4-phase chopper stabilization
▫ Low switchpoint drift throughout temperature range
▫ Low sensitivity to thermal and mechanical stresses
▪ On-chip protection
▫ Supply transient protection
▫ Reverse-battery protection
▫ Industry-leading ISO 7637-2 performance through use of
proprietary, 40 V clamping structure
▪ Solid-state reliability
▪ Robust EMC and ESD performance
▪ UB package with integrated 0.1 µF bypass capacitor
Packages
3-pin SOT23-W
2 mm × 3 mm × 1
mm (suffix LH)
3-pin ultramini SIP
1.5 mm × 4 mm × 3
mm (suffix UA)
2-pin ultramini SIP
1.5 mm × 4 mm × 4
mm (suffix UB)
Not to scale
DESCRIPTION
The A119x and A119x-F comprise a family of two-wire,
unipolar, Hall-effect switches, which can be trimmed by the
user at end-of-line to optimize magnetic switchpoint accuracy
in the application. The latter (-F option) are temperature-
compensated for use with ferrite magnets. These devices are
produced on theAllegroadvanced BiCMOS wafer fabrication
process, which implements a patented high-frequency, 4-phase,
chopper stabilization technique. This technique achieves
magnetic stability over the full operating temperature range,
and eliminates offsets inherent in devices with a single Hall
element that are exposed to harsh application environments.
The A119x and A119x-F family has a number of automotive
applications. These include sensing seat track position, seat belt
buckle presence, hood/trunk latching, and shift selector position.
Two-wire unipolar switches are particularly advantageous in
cost-sensitive applications because they require one less wire
for operation versus the more traditional open-collector output
switches. Additionally, the system designer inherently gains
diagnostics because there is always output current flowing,
which should be in either of two narrow ranges. Any current
level not within these ranges indicates a fault condition.
All family members are offered in three package styles. The LH
is a SOT-23W style, miniature, low-profile package for surface-
mount applications. The UA is a 3-pin, ultra-mini, single inline
package (SIP) for through-hole mounting. The UB is a 2-pin single
inline package (SIP) for through-hole mounting that integrates
the power supply decoupling capacitor. All three packages are
lead (Pb) free, with 100% matte-tin leadframe plating.
UB package only
V+ VCC
LH & UA
package
only
0.01 µF
0.1 µF
Regulator
To all subcircuits
Clock/Logic
Program / Lock
Offset Adjust
ICC Adjust
Amp
Polarity
Low-Pass
Filter
Schmitt
Trigger
A1190-DS, Rev. 7
Functional Block Diagram
GND
UA package only
GND




Allegro

A1190-F Datasheet Preview

A1190-F Datasheet

Two-Wire Hall-Effect Switches

No Preview Available !

A119x and A119x-F
Programmable, Chopper-Stabilized,
Two-Wire Hall-Effect Switches
SELECTION GUIDE
Part Number
Package
Packing1
A1190LLHLT-T2 LH (3-pin SOT23-W surface-mount) 7-in. reel, 3000 pieces/reel
A1190LLHLX-T LH (3-pin SOT23-W surface-mount) 13-in. reel, 10000 pieces/reel
A1190LUA-T3
UA (3-pin SIP through-hole)
Bulk, 500 pieces/bag
A1190LUBTN-T UB (2-pin SIP through-hole)
13-in. reel, 4000 pieces/reel
A1192LLHLT-T2 LH (3-pin SOT23-W surface-mount) 7-in. reel, 3000 pieces/reel
A1192LLHLT-F-T2 LH (3-pin SOT23-W surface-mount) 7-in. reel, 3000 pieces/reel
A1192LLHLX-T LH (3-pin SOT23-W surface-mount) 13-in. reel, 10000 pieces/reel
A1192LLHLX-F-T LH (3-pin SOT23-W surface-mount) 13-in. reel, 10000 pieces/reel
A1192LUA-T3
UA (3-pin SIP through-hole)
Bulk, 500 pieces/bag
A1192LUA-F-T3 UA (3-pin SIP through-hole)
Bulk, 500 pieces/bag
A1192LUBTN-T UB (2-pin SIP through-hole)
13-in. reel, 4000 pieces/reel
A1192LUBTN-F-T UB (2-pin SIP through-hole)
13-in. reel, 4000 pieces/reel
A1193LLHLT-T2 LH (Surface mount)
7-in. reel, 3000 pieces/reel
A1193LLHLT-F-T2 LH (Surface mount)
7-in. reel, 3000 pieces/reel
A1193LLHLX-T LH (Surface mount)
13-in. reel, 10000 pieces/reel
A1193LLHLX-F-T LH (Surface mount)
13-in. reel, 10000 pieces/reel
A1193LUA-T3
UA (3-pin SIP through-hole)
Bulk, 500 pieces/bag
A1193LUA-F-T3 UA (3-pin SIP through-hole)
Bulk, 500 pieces/bag
A1193LUBTN-T UB (2-pin SIP through-hole)
13-in. reel, 4000 pieces/reel
A1193LUBTN-F-T UB (2-pin SIP through-hole)
13-in. reel, 4000 pieces/reel
1 Contact Allegrofor additional packing options.
2 These variants available only through authorized distributors.
3 Contact factory for availability.
Temperature
Coefficient
SmCo
SmCo
SmCo
SmCo
SmCo
Ferrite
SmCo
Ferrite
SmCo
Ferrite
SmCo
Ferrite
SmCo
Ferrite
SmCo
Ferrite
SmCo
Ferrite
SmCo
Ferrite
Output (ICC) in
South Polarity
Field
Low
High
Supply Current
at ICC(L)
(mA)
2 to 5
5 to 6.9
Magnetic Operate
Point, BOP
(G)
10 to 200
RoHS
COMPLIANT
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
2


Part Number A1190-F
Description Two-Wire Hall-Effect Switches
Maker Allegro
Total Page 22 Pages
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