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Reflective Photosensors (Photo Reflectors)
CNZ2153
Reflective Photosensor
Overview
CNZ2153 is a photosensor detecting the change of reflective light in which a high efficiency GaAs infrared light emitting diode is used as the light emitting element, and a Si phototransistor is used as the light detecting element. The two elements are located parallel in the same direction and objects are detected when passing in front of the device.
3.00.2
Mark for indicating LED side 7.50.2 (3.2)
4.00.2
Unit : mm
10.2 min. 6.00.2 1.70.2
o2.20.2
Features
Fast response Small size and light weight
(7.2) 2 3
Detection of paper, film and cloth Detection of position and edge
Optical mark reading Detection of coin and bill
1
Start, end mark detection of magnetic tape
Absolute Maximum Ratings (Ta = 25C)
Parameter Reverse voltage (DC) Input (Light Forward current (DC) emitting diode) Power dissipation Collector to emitter voltage Output (Photo Emitter to collector voltage transistor) Collector current Collector power dissipation Temperature
*1
1 23 4 (Note) Pin connection 1. ( ) Dimension is reference 2. * is dimension at the root of leads
Symbol Ratings VR IF PD*1 VCEO VECO IC PC*2 Topr 3 50 75 30 5 20 50 -25 to +85
Unit V mA mW V V mA mW C C
Operating ambient temperature Storage temperature
Tstg -30 to +100
Input power derating ratio is 1.0 mW/C at Ta 25C. *2 Output power derating ratio is 0.67 mW/C at Ta 25C.
Electrical Characteristics (Ta = 25C)
Parameter Forward voltage (DC) Input Reverse current (DC) characteristics Capacitance between terminals Output characteristics Collector cutoff current Symbol VF IR Ct ICEO IF = 50mA VR = 3V VR = 0V, f = 1MHz VCE = 10V 100 6 0.5 50 0.2 Conditions min typ 1.2 max 1.5 10 Unit V A pF A A s V
Collector current IC*1 VCC = 5V, IF = 20mA, RL = 100 Transfer Response time tr*2 , tf*3 VCC = 10V, IC = 0.1mA, RL = 100 characteristics Collector to emitter saturation voltage VCE(sat) IF = 50mA, IC = 0.1mA
*1
Transfer characteristics measurement circuit (Ambient light is shut off completely)
IF IC VCC d = 3 mm
*2
*3
,, ,, ,,, ,, ,, ,, ,
Time required for the collector current to increase from 10% to 90% of its final value. Time required for the collector current to decrease from 90% to 10% of its initial value. 90%
10% tr tf
RL
Standard white paper (Reflective ratio 90%)
, ,,
4
Applications
o0.450.05 o0.30.05 *2-0.90.15
0.5
10.60.3 9.60.3
1
CNZ2153
Reflective Photosensors (Photo Reflectors)
IF , IC -- Ta
60 60
IF -- VF
1.6 Ta = 25C
VF -- Ta
IF , IC (mA)
50
IF
50
IF (mA)
Forward current, collector current
40
40
VF (V)
1.2
IF = 50mA
30 IC
Forward current
30
Forward voltage
10mA 0.8
20
20
0.4
10
10
0 - 25
0
20
40
60
80
100
0
0
0.4
0.8
1.2
1.6
2.0
2.4
0 - 40 - 20
0
20
40
60
80
100
Ambient temperature Ta (C )
Forward voltage VF (V)
Ambient temperature Ta (C )
IC -- IF
10 VCC = 5V RL = 100 Ta = 25C 10 2
IC -- VCE
160 Ta = 25C
IC -- Ta
VCC = 5V IF = 20mA RL = 100 120
IC (mA)
IC (mA)
1
10
10 -1
1 IF = 30mA 20mA 10 -1 10mA
Relative output current
10 2
Collector current
Collector current
IC (%)
80
10 -2
40
10 -3 10 -1
1
10
10 2
10 -2 10 -1
1
10
0 - 40 - 20
0
20
40
60
80
100
Forward current IF (mA)
Collector to emitter voltage VCE (V)
Ambient temperature Ta (C )
ICEO -- Ta
10 VCE = 10V 10 3
tr -- IC
VCC = 10V Ta = 25C 0.32
IC -- d
VCC = 5V Ta = 25C RL = 100 IF = 20mA 0.24
ICEO (A)
10 2
tr (s)
IC (mA)
1
10 -1
Collector current
RL = 1k 10 500 100 1
Dark current
10 -2
Rise time
0.16
0.06
10 -3
10 -4 - 40 - 20
0
20
40
60
80
100
10 -1 10 -2
10 -1
1
10
0
0
2
Ambient temperature Ta (C )
Collector current IC (mA)
2
, ,
d 4 6 8
Distance d (mm)

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