Photo IC for encoder
Photo IC for photointerrupters with encoder
The S4506 incorporates a 4-element photodiode array that provides 2-phase digital output in response to the input light sta-
tus. Photointerrupters with encoder functions can be easily conﬁgured by using the S4506.
2-phase (phases A and B) digital output
Integrated with 4-element photodiode (pitch: 0.39 mm)
Direct TTL connection
Miniature plastic package
Encoders for office machine, robots, and NC machines
Absolute maximum ratings (Ta=25 °C)
-0.5 to +7
-30 to +80
-40 to +85
230 °C, 5 s, at least 1.8 mm away from package surface
*1: Power dissipation decreases at a rate of 3.3 mW/°C above Ta=25 °C
Note: Exceeding the absolute maximum ratings even momentarily may cause a drop in product quality. Always be sure to use the
product within the absolute maximum ratings.
Electrical and optical characteristics (Ta =25 °C, Vcc=5 V, unless otherwise noted)
Low level output voltage
High level output voltage
Peak sensitivity wavelength
Slit movement speed
Ev=200 lx*2 *3
f=2.5 kHz, Ev=200 to 700 lx*2
“A” light source, f=2.5 kHz
- 5.5 V
0.1 0.4 V
6 12 mA
3 12 mA
870 - nm
50 65 %
90 120 deg
30 120 lx
*2: Ev is illuminance emitted from a CIE standard “A” light source (tungsten lamp).
*3: A collimated light source and a recommended slit moving at a constant speed are used.
[Delay time between the instant that the slit passes through the output transition position and the actual output transition should
be less than 1/8 of the slit cycle.]
*4: See operation timing diagram (page 4)
*5: Minimum illuminance from an “A” light source when the duty ratio of phases A and B is between 35 and 65%.