4
Encoding Characteristics (Codewheel of Rop @11.38 mm)
Encoding characteristics over the recommended operating condition and mounting conditions
.
Parameter Symbol Typical Unit
Interpolation factor 1 X 2 X 4 X
Cycle Error C
18 22 36
°e
Pulse Width Error P
15 20 30
°e
Phase Error
91518
°e
State Error S
10 15 25
°e
Index Pulse Width (Gated 90°) P
O
90 90 90
°e
Index Pulse Width (Gated 180°) P
O
180 180 180
°e
Index Pulse Width (Gated 360°) P
O
Not Available 360 360
°e
Notes:
1. Typical values represent the encoder performance at typical mounting alignment, whereas the maximum values represent the encoder
performance across the range of recommended mounting tolerance.
2. For optimal performance, please refer to alignment method as described in Application Note 5500 (document AV02-2789EN)
Electrical Characteristics
Characteristics over recommended operating conditions at 25° C.
Parameter Symbol Min. Typ. Max. Unit Notes
High Level Output Voltage V
OH
2.4 V I
OH
= -1.5 mA
Low Level Output Voltage V
OL
0.4 V I
OH
= +1.5 mA
Output current per channel, Iout I
O
- - 1.5 mA
Rise Time t
r
<100 ns
CL = 25pF
RL = 2.7kΩ
Fall Time t
f
<100 ns
LED Current Limiting Resistor
A resistor to limit the current to the LED is required. The
recommended value is 180 (±1%) and the resistor
should be placed in series between the 5 V supply and pin
VLED of the encoder. This will result in an LED current of
approximately 15 mA for optimal encoder performance.
Gnd
V
LED
A
B
Emitter
Detector
V
CC
SEL 4X
CHI
SEL 2X
V
CC
R
