3503
The UGN3503LT, UGN3503U, and UGN3503UA Hall-effect
sensors accurately track extremely small changes in magnetic flux
density—changes generally too small to operate Hall-effect switches.
RATIOMETRIC, LINEAR
HALL-EFFECT SENSORS
As motion detectors, gear tooth sensors, and proximity detectors,
they are magnetically driven mirrors of mechanical events. As sensitive
monitors of electromagnets, they can effectively measure a system's
performance with negligible system loading while providing isolation
from contaminated and electrically noisy environments.
Each Hall-effect integrated circuit includes a Hall sensing element,
linear amplifier, and emitter-follower output stage. Problems associated
with handling tiny analog signals are minimized by having the Hall cell
and amplifier on a single chip.
2
3
Data Sheet
27501B†
V
CC
1
X
GROUND
OUTPUT
SUPPLY
Three package styles provide a magnetically optimized package for
most applications. Package suffix ‘LT’ is a miniature SOT-89/TO-
243AA transistor package for surface-mount applications; suffix ‘U’ is a
miniature three-lead plastic SIP, while ‘UA’ is a three-lead ultra-mini-
SIP. All devices are rated for continuous operation over the temperature
range of -20°C to +85°C.
Dwg. PH-006
FEATURES
s
s
s
s
s
Extremely Sensitive
Flat Response to 23 kHz
Low-Noise Output
4.5 V to 6 V Operation
Magnetically Optimized Package
Pinning is shown viewed from branded side.
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V
CC
.............................
8 V
Magnetic Flux Density, B .........
Unlimited
Operating Temperature Range,
T
A
............................
-20
°
C to +85
°
C
Storage Temperature Range,
T
S
...........................
-65
°
C to +150
°
C
Always order by complete part number, e.g.,
UGN3503UA
.
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
