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HEDS-9740 датащи(PDF) 2 Page - AVAGO TECHNOLOGIES LIMITED

номер детали HEDS-9740
подробное описание детали  For 180, 300, 360 LPI Small Optical Encoder Modules
PDF  6 Pages
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производитель  AVAGO [AVAGO TECHNOLOGIES LIMITED]
домашняя страница  http://www.avagotech.com
Logo AVAGO - AVAGO TECHNOLOGIES LIMITED

HEDS-9740 датащи(HTML) 2 Page - AVAGO TECHNOLOGIES LIMITED

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2
Absolute Maximum Ratings
Parameter
Symbol
Min.
Max.
Units
Notes
Storage Temperature
TS
–40
85
°C
Operating Temperature
TA
–40
85
°C
Supply Voltage
VCC
–0.5
7
V
Output Voltage
VO
–0.5
VCC
V
Output Current per Channel
IO
–1.0
5
mA
Soldering Temperature
260
°Ct ≤ 5 sec.
Definitions
Count (N) = the number of bar
and window pairs or Counts Per
Revolution (CPR) of the
codewheel, or the number of
Lines Per Inch (LPI) of the
codestrip.
1 Shaft Rotation = 360 mechanical
degrees
= N cycles
1 Cycle (c) = 360 electrical
degrees (
°e)
= 1 bar and window pair
Pulse Width (P): The number of
electrical degrees that an output
is high during one cycle. This
value is nominally 180
°e or 1/2
cycle.
Pulse Width Error (
∆P): The
deviation, in electrical degrees, of
the pulse width from its ideal
value of 180
°e.
State Width (S): The number of
electrical degrees between a
transition in the output of channel
A and the neighboring transition
in the output of channel B. There
are four states per cycle, each
nominally 90
°e.
State Width Error (
∆S): The
deviation, in electrical degrees, of
each state width from its ideal
value of 90
°e.
Phase (
φ): The number of
electrical degrees between the
center of the high state of channel
A and the center of the high state
of channel B.
This value is nominally 90
°e for
quadrature output.
Phase Error (
∆φ): The deviation
of the phase from its ideal value
of 90
°e.
Direction of Rotation: When
the codewheel rotates counter-
clockwise, as viewed looking
down on the module (so the
marking is visible), channel A will
lead channel B. If the codewheel
rotates in the opposite direction,
channel B will lead channel A.
Optical Radius (ROP): The
distance from the codewheel’s
center of rotation to the optical
center (OC) of the encoder
module.
Angular Misalignment Error
(EA): Angular misalignment of
the sensor in relation to the
tangential direction. This applies
for both rotary and linear motion.
Mounting Position (RM):
Distance from motor shaft center
of rotation to center of alignment
tab receiving hole.



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