SS1102
Unipolar Hall Switch-Low Sensitivity
1 V3.10 Nov 1, 2013
Features and Benefits
– 3.5V to 24V Operation
– -40°C to 150°C Superior temperature operation
– CMOS technology
– Low current consumption
– Chopper-stabilized amplifier stage
– Open drain output
– Low sensitivity
– Small Size SOT23 3L or SIP 3L
– Both RoHS compliant packages
Application Example s
– Automotive, Consumer and Industrial
– Solid-state switch
– Brushless DC motor commutation
– Speed detection
– Angular position detection
– Proximity detection
– Current detector
3 pin SOT 23 (suf f ix SO) 3 pi n S IP (s uffix U A)
Fu nct io nal Block Diagram
V
DD
OUT
Voltage
Regulator
Chopper
Hall
Plate
GND
SIP Package SOT Pa ckage
Pin 1 – V
DD
Pin 1 – V
DD
Pin 2 – GND Pi n 2 – OUT
Pin 3 – OUT Pi n 3 – GND
SS1102
Unipolar Hall Switch-Low Sensitivity
2 V3.10 Nov 1, 2013
General Description
The SS1102 is a unipola r Hall-effect s ens or IC fa b-
ricated from CMOS technology. The device inte-
grates a voltage regulator, Hall sensor with dy-
namic offset cancellation system, small signal am-
plifier, Schmitt trigger and an open-drain output
driver. With suitable output pull up, they can be
us ed with bipo l a r or C M O S l o gic ci r cu i ts.
These Hall-effect switches are monolithic integrat-
ed circuits with tighter magnetic specifications, de-
signed to operate continuously over extended tem-
peratures to +150°C,and are more stable with
b ot h te mper a tur e a nd s u ppl y v olt age chan ges. Th e
unipolar switching characteristic makes these de-
vices ideal for use with a simple bar or rod mag-
net.Thanks to its wide operating voltage range and
extended choice of temperature range, it is quite
suitable for use in automotive, industrial and con-
sumer applications.
The de vice is delivered in a S ma ll O utli ne Tra nsis-
tor (SOT) or in a Plastic Single In Line (SIP 3L
flat). Both 3-lead packages are RoHS compliant.
Glossary of Terms
MilliTesla (mT), Gauss Units of magnetic flux density: 1mT = 10 Gauss
RoHS Restriction of Hazardous Substances
Operating Point (B
OP
) Magnetic flux density applied on the branded side of the package which turns the
output driver ON (V
OUT
= V
DSon
)
Release Point (B
RP
) Magnetic flux density applied on the branded side of the package which turns the
output driver OFF (V
OUT
= high)