
This Hall-effect switch is a monolithic integrated circuit designed to
operate continuously over extended temperatures to +85
°
C. The unipo-
lar switching characteristic makes this device ideal for use with a simple
bar or rod magnet. The A3163ELT and A3163EUA are identical except
for package.
Each device includes a voltage regulator for operation with supply
voltages of 3.5 to 24 volts, reverse-battery protection, quadratic Hall-
voltage generator for low offset, temperature compensation circuitry,
small-signal amplifier, Schmitt trigger, and a constant-current open-
collector output, wired internally for true 2-wire operation. Noise
radiation is limited by control of the output-current slew rate.
Two package styles provide a magnetically optimized package for
most applications. Suffix ‘LT’ is a miniature SOT89/TO-243AA transis-
tor package for surface-mount applications; suffix ‘UA’ is a three-lead
ultra-mini SIP for through-hole mounting; it is also available with lead
forming for surface-mount applications (suffix 'UA-TL').
HALL-EFFECT SWITCH
FOR 2-WIRE APPLICATIONS
Always order by complete part number, e.g.,
A3163ELT .
D
2
Pinning is shown viewed from branded side.
ABSOLUTE MAXIMUM RATINGS
at T
A
= +25
°
C
Supply Voltage, V
CC
................
26.5 V
Reverse Battery Voltage, V
RCC
....
-16 V
Magnetic Flux Density, B.....
Unlimited
Package Power Dissipation, P
D
See Graph
Junction Temperature, T
J
.......
+170
°
C
Operating Temperature Range,
T
A
........................
-40
°
C to +85
°
C
Storage Temperature Range,
T
S
......................
-65
°
C to +170
°
C
FEATURES and BENEFITS
I
Internal Current Regulator for 2-Wire Operation
I
Output Slew Rate Controlled
I
3.5 V to 24 V Operation … Needs Only An Unregulated Supply
I
Reverse Battery Protection
I
Excellent Temperature Stability
I
Activate with Small, Commercially Available Permanent Magnets
I
Small Size
I
Solid-State Reliability … No Moving Parts
I
Resistant to Physical Stress
3163
X
Dwg. PH-003-7A
1
S
G
3
2
G
Suffix 'UA' Pinning
(ultra-mini SIP)