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US2882 Datasheet

  • US2882

  • CMOS High Sensitivity Latch

  • 134.04KB

  • 7頁

  • ETC

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US2881/2882
CMOS High Sensitivity Latch
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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
Solid state switch
Brushless DC motor commutation
Speed sensing
Linear position sensing
Angular position sensing
Current sensing
Applications
Ordering Information
Part No.
US2881 / US2882
US2881 / US2882
Temperature Suffix
Package
Temperature Range
E
SO or UA
-40
o
C to 85
o
C Extended
L
SO or UA
-40
o
C to 150
o
C Full Temp.
*Contact Factory or Sales Representative for Legacy Temperature Versions
Functional Diagram
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.
SO Package
Pin 1 - V
D D
Pin 2 - Output
Pin 3 - GND
V
DD
Output
Voltage
Regulator
Chopper
GND
UA Package
Pin 1 - V
D D
Pin 2 - GND
Pin 3 - Output
Note:
Static sensitive device; please observe ESD precautions. Re -
verse V
DD
protection is not included. For reverse voltage protection,
a 100鈩?resistor in series with V
DD
is recommended.
US2881 CMOS High Sensitivity Latch
3901002881 Rev 5.6
23/July/00
Page 1

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