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What is A1193?

This electronic component, produced by the manufacturer "Allegro", performs the same function as "Two-Wire Hall-Effect Switches".


A1193 Datasheet PDF - Allegro

Part Number A1193
Description Two-Wire Hall-Effect Switches
Manufacturers Allegro 
Logo Allegro Logo 


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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

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A1193 equivalent
A119x and A119x-F
Programmable, Chopper-Stabilized,
Two-Wire Hall-Effect Switches
ELECTRICAL CHARACTERISTICS: Valid at TA = –40°C to 150°C, TJ < TJ(max), through operating supply voltage range, unless
otherwise noted
Characteristics
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
Supply Voltage1
Supply Current
Supply Zener Clamp Voltage
Supply Zener Clamp Current
VCC
ICC(L)
ICC(H)
VZ(sup)
IZ(sup)
Operating, TJ ≤ 165 °C
A1190
B > BOP
A1192, A1192-F
B > BOP
A1193, A1193-F
B < BRP
A1190, A1192, A1192-F
B < BRP
A1193, A1193-F
B > BOP
ICC = ICC(L)(max) + 3 mA, TA = 25°C
VZ(sup) = 28 V
3 – 24 V
2 – 5 mA
5 – 6.9 mA
5 – 6.9 mA
12 – 17 mA
12 – 17 mA
28 –
V
ICC(L)(max)
+ 3 mA
mA
Reverse Supply Current
IRCC
VRCC = –18 V
– – –1.6 mA
Output Slew Rate
LH, UA package (no bypass capacitor2);
di/dt capacitance of probe CS = 20 pF
UB package (integrated capacitor3);
capacitance of probe CS = 20 pF
– 90 – mA / µs
– 0.22 – mA/µs
Chopping Frequency
fC
– 700 –
kHz
LH, UA packages: A1190,
A1192, A1192-F
CBYP = 0.01 µF,
B > BOP + 10 G
– – 25 µs
Power-Up Time4
ton
UB package3: A1190, A1192,
A1192-F
B > BOP + 10 G
LH, UA packages: A1193,
A1193-F
CBYP = 0.01 µF,
B < BRP – 10 G
– – 25 µs
– – 25 µs
UB package3: A1193, A1193-F B < BRP – 10 G
– – 25 µs
Power-Up State5,6
POS ton < ton(max) , VCC slew rate > 25 mV / µs
– ICC(H)
1 VCC 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 a bypass capacitor results in slower current change.
3 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 VCC slew rate of 25 mV / µs or greater.
6 For t > ton and BRP < B < BOP , Power-Up State is not defined.
MAGNETIC CHARACTERISTICS1: Valid at TA = –40°C to 150°C, TJ ≤ TJ (max), unless otherwise noted
Characteristics
Symbol
Test Conditions
Min.
Typ.
Max.
Unit2
Initial Operate Point
Programmable Magnetic
Operating Point
BOP(init)
BOP
TA = 25°C
– –14 10
10 – 200
G
G
Average Magnetic Step Size3
Switchpoint Temperature Drift
STEPBOP
ΔBOP
TA = 25°C, VCC = 5 V
A1190, A1192, A1193
A1192-F, A1193-F
10 to 200 G
3 4.8 7.5
G
– ±20 –
G
– –0.25 –
%/°C
Hysteresis
BHYS
5 – 30
1 Relative 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 STEPBOP is a calculated average from the cumulative programmed bits.
G
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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