US2881 Datasheet, PDF (1/7 Pages) List of Unclassifed Manufacturers – CMOS High Sensitivity Latch

US2881/2882
CMOS High Sensitivity Latch
Features and Benefits
• Chopper stabilized amplifier stage
• Optimized for BDC motor applications
• New miniature package / thin, high reliability package
• Operation down to 3.5V
• CMOS for optimum stability, quality, and cost
• Ultra low I_DD current
Applications
• Solid state switch
• Brushless DC motor commutation
• Speed sensing
• Linear position sensing
• Angular position sensing
• Current sensing
Ordering Information
Part No.
US2881 / US2882
US2881 / US2882
Temperature Suffix Package
E
SO or UA
L
SO or UA
Temperature Range
-40^oC to 85^oC Extended
-40^oC to 150^oC Full Temp.
*Contact Factory or Sales Representative for Legacy Temperature Versions
Functional Diagram
V_DD
Voltage
Regulator
Chopper
Output
UA Package
Pin 1 - V _{D D}
Pin 2 - GND
Pin 3 - Output
GND
SO Package
Pin 1 - V_{D D}
Pin 2 - Output
Pin 3 - GND
Description
The design specifications and performance of the
Melexis US2881 have been optimized for commu-
tation applications in brushless DC motors and
automotive speed sensing.
The output transistor will be latched on (B_OP) in the
presence of a sufficiently strong South pole mag-
netic field facing the marked side of the package.
Similarly, the output will be latched off (B_RP) in the
presence of a North field. The SOT-23 device is
reversed from the UA package. The SOT-23 output
transistor will be latched on (B_OP) in the presence
of a sufficiently strong North pole magnetic field
subjected to the marked face.
Note: Static sensitive device; please observe ESD precautions. Re -
verse V_DD protection is not included. For reverse voltage protection,
a 100Ω resistor in series with V_DD is recommended.
US2881 CMOS High Sensitivity Latch
3901002881 Rev 5.6
23/July/00
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