A119x and A119x-F
Programmable, Chopper-Stabilized, Two-Wire Hall-Effect Switches
▪ 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
FEATURES AND BENEFITS
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 the
Allegro
™
advanced BiCMOS wafer fabrication process, which
implements a 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
DESCRIPTION
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
V+
VCC
0.1 µF
Regulator
To all subcircuits
LH & UA
package
only
Clock/Logic
Program / Lock
I
CC
Adjust
Offset Adjust
Sample and Hold
Dynamic Offset
Cancellation
0.01 µF
Amp
Polarity
Low-Pass
Filter
Schmitt
Trigger
GND
UA package only
GND
Functional Block Diagram
A1190-DS, Rev. 7
A119x and A119x-F
Programmable, Chopper-Stabilized,
Two-Wire Hall-Effect Switches
SELECTION GUIDE
Part Number
A1190LLHLT-T
2
A1190LLHLX-T
A1190LUA-T
3
A1190LUBTN-T
A1192LLHLT-T
2
A1192LLHLT-F-T
2
A1192LLHLX-T
A1192LLHLX-F-T
A1192LUA-T
3
A1192LUA-F-T
3
A1192LUBTN-T
A1192LUBTN-F-T
A1193LLHLT-T
2
A1193LLHLT-F-T
2
A1193LLHLX-T
A1193LLHLX-F-T
A1193LUA-T
3
A1193LUA-F-T
3
A1193LUBTN-T
A1193LUBTN-F-T
2
These
Package
LH (3-pin SOT23-W surface-mount)
LH (3-pin SOT23-W surface-mount)
UA (3-pin SIP through-hole)
UB (2-pin SIP through-hole)
LH (3-pin SOT23-W surface-mount)
LH (3-pin SOT23-W surface-mount)
LH (3-pin SOT23-W surface-mount)
LH (3-pin SOT23-W surface-mount)
UA (3-pin SIP through-hole)
UA (3-pin SIP through-hole)
UB (2-pin SIP through-hole)
UB (2-pin SIP through-hole)
LH (Surface mount)
LH (Surface mount)
LH (Surface mount)
LH (Surface mount)
UA (3-pin SIP through-hole)
UA (3-pin SIP through-hole)
UB (2-pin SIP through-hole)
UB (2-pin SIP through-hole)
Packing
1
7-in. reel, 3000 pieces/reel
13-in. reel, 10000 pieces/reel
Bulk, 500 pieces/bag
13-in. reel, 4000 pieces/reel
7-in. reel, 3000 pieces/reel
7-in. reel, 3000 pieces/reel
13-in. reel, 10000 pieces/reel
13-in. reel, 10000 pieces/reel
Bulk, 500 pieces/bag
Bulk, 500 pieces/bag
13-in. reel, 4000 pieces/reel
13-in. reel, 4000 pieces/reel
7-in. reel, 3000 pieces/reel
7-in. reel, 3000 pieces/reel
13-in. reel, 10000 pieces/reel
13-in. reel, 10000 pieces/reel
Bulk, 500 pieces/bag
Bulk, 500 pieces/bag
13-in. reel, 4000 pieces/reel
13-in. reel, 4000 pieces/reel
Temperature
Coefficient
SmCo
SmCo
SmCo
SmCo
SmCo
Ferrite
SmCo
Ferrite
SmCo
Ferrite
SmCo
Ferrite
SmCo
Ferrite
SmCo
Ferrite
SmCo
Ferrite
SmCo
Ferrite
Output (I
CC
) in
South Polarity
Field
Supply Current
at I
CC(L)
(mA)
Magnetic Operate
Point, B
OP
(G)
2 to 5
Low
10 to 200
5 to 6.9
High
1
Contact Allegro
™
for additional packing options.
variants available only through authorized distributors.
3
Contact factory for availability.
RoHS
COMPLIANT
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
2
A119x and A119x-F
Programmable, Chopper-Stabilized,
Two-Wire Hall-Effect Switches
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Characteristic
Forward Supply Voltage
Reverse Supply Voltage
Magnetic Flux Density
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
Symbol
V
CC
V
RCC
B
T
A
T
J
(max)
T
stg
Range L
Notes
Rating
28
–18
Unlimited
–40 to 150
165
–65 to 170
Unit
V
V
G
ºC
ºC
ºC
INTERNAL DISCRETE CAPACITOR RATINGS (UB PACKAGE ONLY)
Characteristic
Rated Normal Capacitance
Rated Voltage
Rated Capacitor Tolerance
Temperature Designator
Symbol
C
SUPPLY
V
CSUPPLY
Notes
Connected between VCC and GND
Rating
0.1
50
±10
X7R
Unit
µF
V
%
–
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
3
A119x and A119x-F
Programmable, Chopper-Stabilized,
Two-Wire Hall-Effect Switches
PINOUT DIAGRAMS AND TERMINAL LIST TABLE
Pinout Diagrams
3
NC
1
2
1
2
3
1
2
LH Package
UA Package
UB Package
Terminal List Table
Number
Name
LH package
VCC
UA package
VCC
UB package
VCC
Function
Connects power supply to chip;
used to apply programming
signal
LH package: no connection, it
is highly recommended that this
pin be tied to GND
UA, UB package: ground
terminal
3
GND
GND
–
Ground terminal
1
2
NC
GND
GND
PROGRAMMABLE PARAMETERS
Name
B
OP
Trim
Programming Lock
Functional Description
Fine trim of Programmable Magnetic Operating Point
Lock access to programming
Quantity
of Bits
6
1
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
4
A119x and A119x-F
Programmable, Chopper-Stabilized,
Two-Wire Hall-Effect Switches
ELECTRICAL CHARACTERISTICS:
Valid at T
A
= –40°C to 150°C, T
J
< T
J
(max), through operating supply voltage range, unless
otherwise noted
Supply Voltage
1
Characteristics
Symbol
V
CC
I
CC(L)
Supply Current
I
CC(H)
Supply Zener Clamp Voltage
Supply Zener Clamp Current
Reverse Supply Current
Output Slew Rate
Chopping Frequency
V
Z(sup)
I
Z(sup)
I
RCC
di/dt
f
C
LH, UA packages: A1190,
A1192, A1192-F
Power-Up Time
4
t
on
UB package
3
: A1190, A1192,
A1192-F
LH, UA packages: A1193,
A1193-F
UB package
3
: A1193, A1193-F
Power-Up State
5,6
POS
C
BYP
= 0.01 µF,
B > B
OP
+ 10 G
B > B
OP
+ 10 G
C
BYP
= 0.01 µF,
B < B
RP
– 10 G
B < B
RP
– 10 G
A1190
A1192, A1192-F
A1193, A1193-F
A1190, A1192, A1192-F
A1193, A1193-F
Test Conditions
Operating, T
J
≤ 165 °C
B > B
OP
B > B
OP
B < B
RP
B < B
RP
B > B
OP
Min.
3
2
5
5
12
12
28
–
–
–
–
–
–
–
–
–
–
Typ.
–
–
–
–
–
–
–
–
–
90
0.22
700
–
–
–
–
I
CC(H)
Max.
24
5
6.9
6.9
17
17
–
I
CC(L)
(max)
+ 3 mA
–1.6
–
–
–
25
25
25
25
–
Unit
V
mA
mA
mA
mA
mA
V
mA
mA
mA / µs
mA/µs
kHz
µs
µs
µs
µs
–
I
CC
= I
CC(L)
(max) + 3 mA, T
A
= 25°C
V
Z(sup)
= 28 V
V
RCC
= –18 V
LH, UA package (no bypass capacitor
2
);
capacitance of probe C
S
= 20 pF
UB package (integrated capacitor
3
);
capacitance of probe C
S
= 20 pF
t
on
< t
on
(max) , V
CC
slew rate > 25 mV / µs
1
V
CC
represents the generated voltage between the VCC pin and the GND pin.
2
Measured without bypass capacitor between VCC pin and the GND pin. Use of
3
a bypass capacitor results in slower current change.
Measured with internal bypass capacitor (0.1 µF) between VCC and GND. Additional bypass capacitance results in slower current change.
4
Guaranteed by characterization and design.
5
Power-Up State as defined is true only with a V
CC
slew rate of 25 mV / µs or greater.
6
For t > t and B
< B < B
OP
, Power-Up State is not defined.
on
RP
MAGNETIC CHARACTERISTICS
1:
Valid at T
A
= –40°C to 150°C, T
J
≤ T
J
(max), unless otherwise noted
Characteristics
Initial Operate Point
Programmable Magnetic
Operating Point
Average Magnetic Step Size
3
Switchpoint Temperature Drift
Hysteresis
1
Relative
Symbol
B
OP(init)
B
OP
STEP
BOP
ΔB
OP
B
HYS
T
A
= 25°C
Test Conditions
Min.
–
10
3
–
Typ.
–14
–
4.8
±20
–0.25
–
Max.
10
200
7.5
–
–
30
Unit
2
G
G
G
G
%/°C
G
T
A
= 25°C, V
CC
= 5 V
A1190, A1192, A1193
A1192-F, A1193-F
10 to 200 G
–
5
values of B use the algebraic convention, where positive values indicate south magnetic polarity, and negative values indicate north
magnetic polarity; therefore greater B values indicate a stronger south polarity field (or a weaker north polarity field, if present).
2
1 G (gauss) = 0.1 mT (millitesla).
3
STEP
BOP
is a calculated average from the cumulative programmed bits.
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
5
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