Optoisolators (Photocouplers)
CNZ3731, CNC7C501, CNZ3734 CNC2S501, CNC7C502, CNC7H501
Optoisolators
Overview
The CNZ3731 series of optoisolators consist of a GaAs infrared LED which is optically coupled with a Si NPN Darlington phototransistor, and housed in a small DIL package. The series provides high I/O isolation voltage and high collector/emitter isolation voltage, as well as a high current transfer ratio (CTR). This opto isolator series also includes the two-channel CNC7C501 and the fourchannel CNZ3734, and A type of these models with increased collector to emitter breakdown voltage (VCEO > 350V).
CNZ3731/CNC2S501
LED Mark 4.58±0.3 1 2 7.62±0.3 6.2±0.5 5.2 max. 0.5 min. 4 3 4-0.5±0.1 4-1.2±0.15 2.54±0.25
15˚
Unit : mm
2.54 min.
3.85±0.3 2.0
0.25 –0
+0.15
0 to
15˚
0 to
1: Anode 2: Cathode 3: Emitter 4: Collector
CNC7C501/CNC7C502
LED Mark 1 2 3 4 7.62±0.3 6.2±0.5 3.85±0.3 2.0 9.66±0.3 5.2 max. 0.5 min. 8 7 6 5 0.25 –0
+0.15
Unit : mm
2.54 min.
Features
High collector to emitter breakdown voltage : VCEO > 300 V, A type : VCEO > 350 V High current transfer ratio with Darlington phototransistor output : CTR = 4000% (typ.) High I/O isolation voltage : VISO ≥ 5000 Vrms Small DIL package for saving mounting space UL listed (UL File No. E79920) A-type models have a guaranteed internal insulating distance of 0.4 mm
0
5˚ to 1
0
5˚ to 1
1,3: Anodee 2,4: Cathode 5,7: Emitter 6,8: Collector
CNZ3734/CNC7H501
LED Mark 1 2 3 4 5 6 7 8 7.62±0.3 6.2±0.5 3.85±0.3 2.0 5.2 max. 0.5 min. 16 15 14 13 12 11 10 9 0.25 –0
+0.15
Applications
Telephone exchange FAX Programmable controllers Signal transfer between circuits with different potentials and impedances
19.82±0.5
Pin Connection
CNZ3731 CNC2S501
1 4
CNZ3734 CNC7H501
1 16
0
5˚ to 1
1 , 3 , 5 , 7 : Anode 2 , 4 , 6 , 8 : Cathode 15˚ 9,11,13,15: Emitter 0 to 10,12,14,16: Collector
2
3
Top View
2 3
15 14
CNC7C501 CNC7C502
1 8
4 5
13 12
2 3
7 6
6 7
11 10
4
5
Top View
8
9
Top View
16-0.5±0.1 16-1.2±0.15 2.54±0.25
Telephones
8-0.5±0.1 8-1.2±0.15 2.54±0.25
Unit : mm
2.54 min.
1
CNZ3731, CNC7C501, CNZ3734, CNC2S501, CNC7C502, CNC7H501
Absolute Maximum Ratings (Ta = 25˚C)
Parameter Reverse voltage (DC) Forward current (DC) Input (Light emitting diode) Pulse forward current Power dissipation Collector current Output (Photo Collector to emitter voltage transistor) Emitter to collector voltage Collector power dissipation Total power dissipation Isolation voltage, input to output Operating ambient temperature Storage temperature
*1 *2 *3
Optoisolators (Photocouplers)
Symbol VR IF IFP*1 PD
*2
Ratings CNZ3731 6 50 1 75 150 300 0.3 300 320 5000 –30 to +100 –55 to +125 150 200 300 320 5000 –30 to +100 –55 to +125
CNC7C501 CNZ3734
CNC2S501 6 50 1 75 150 350 0.3
CNC7C502 CNC7H501
Unit V mA A mW mA V V
IC VCEO VECO PC
*3
150 200
mW mW Vrms ˚C ˚C
PT VISO
*4
Topr Tstg
*4
Pulse width ≤ 100 µs, repeat 100 pps Input power derating ratio is 0.75 mW/˚C at Ta ≥ 25˚C. Output power derating ratio is 3.0 mW/˚C at Ta ≥ 25˚C (CNZ3731, CNC2S501). Output power derating ratio is 0.75 mW/˚C at Ta ≥ 25˚C (CNC7C501, CNC2S502, CNZ3734, CNC7H501). AC 1min., RH < 60 %
Electrical Characteristics (Ta = 25˚C)
Parameter Input Forward voltage (DC) characteristics Capacitance between pins Collector cutoff current Output characteristics Collector to emitter capacitance DC current transfer ratio Isolation capacitance, input to output Isolation resistance, input to output Transfer characteristics Rise time Fall time
*1 DC
Symbol IR VF Ct ICEO CC CTR*1 CISO RISO tr
*2
Conditions VR = 3 V IF = 50mA VR = 0V, f = 1MHz VCE = 200V VCE = 10V, f = 1MHz VCE = 2V, IF = 1mA f = 1MHz VISO = 500V VCC = 10V, IC = 10mA, Rt = 100Ω
min
typ 1.35 30
max 10 1.5 200
Unit µA V pF nA pF % pF Ω µs µs
Reverse current (DC)
10 1000 1011 40 15 1.0 4000 0.7
tf*3
Collector to emitter saturation voltage VCE(sat) IF = 1mA, IC = 2mA
current transfer ratio (CTR) is a ratio of output current against DC input current. IC × 100 (%) IF
V
CTR =
*2 *3
tr : Time required for the collector current to increase from 10% to 90% of its final value tf : Time required for the collector current to decrease from 90% to 10% of its initial value
2
Optoisolators (Photocouplers)
CNZ3731, CNC7C501, CNZ3734, CNC2S501, CNC7C502, CNC7H501
PD — Ta
200 400
PC — Ta
10 5
IFP — DR
IFP (mA)
Pulse width ≤ 100µs Ta = 25˚C
PD (mW)
PC (mW)
150
300
10 4
CNZ3731 CNC2S501 200
Allowable pulse forward current
Collector power dissipation
LED Power dissipation
100
10 3
50
100
CNC7C501/ CNC7C502 CNZ3734/ CNC7H501
10 2
0 – 30
0
25
50
75
100
125
0 – 30
0
25
50
75
100
125
10 10 –3
10 –2
10 –1
1
Ambient temperature Ta (˚C )
Ambient temperature Ta (˚C )
Duty ratio DR
IF — VF
60 Ta = 25˚C 50 160 Pc(max.)
IC — VCE
10 3 IF = 5mA Ta = 25˚C
IC — VCE(sat)
Ta = 25˚C
IF = 5mA
IC (mA)
IF (mA)
IC (mA)
120
3mA 2mA
10 2 2mA 1mA
40
Collector current
Collector current
Forward current
30
80
1.5mA
10 0.5mA
20
1mA 40
1
10 0.5mA 0 0 0.4 0.8 1.2 1.6 2.0 2.4 0 0 2 4 6 8 10 –1 0 0.4 0.8 1.2
Forward voltage VF (V)
Collector to emitter voltage VCE (V)
Collector saturation voltage VCE(sat) (V)
IC — IF
10 3 VCE = 2V Ta = 25˚C 10 6
CTR — IF
120
Relative CTR — Ta
Relative DC current transfer ratio CTR (%)
VCE = 2V Ta = 25˚C IF = 1mA VCE = 2V
10 2
DC current transfer ratio CTR (%)
IC (mA)
10 5
100
Collector current
10
10 4
80
1
10 3
60
10 –1 10 –1
1
10
10 2
10 2 10 –1
1
10
10 2
40 – 40 – 20
0
20
40
60
80
100
Forward current IF (mA)
Forward current IF (mA)
Ambient temperature Ta (˚C )
3
CNZ3731, CNC7C501, CNZ3734, CNC2S501, CNC7C502, CNC7H501
Optoisolators (Photocouplers)
VCE(sat) — Ta
1.6 10 –5 IF = 1mA IC = 2mA 1.4 10 –6
ICEO — Ta
VCE = 200V
ICEO — VCE
Ta = 25˚C
Collector to emitter saturation voltage VCE(sat) (V)
ICEO (A)
1.2
10 –7
Dark current
Dark current
1.0
10 –8
ICEO (A)
10 –8
0.8
10 –9
10 –9
0.6
10 –10
0.4 – 40 – 20
0
20
40
60
80
100
10 –11 – 40 – 20
0
20
40
60
80
100
10 –10 10
10 –2
10 –3
Ambient temperature Ta (˚C )
Ambient temperature Ta (˚C )
Collector to emitter voltage VCE (V)
Response time — External load resistance characteristics
10 3 VCC = 10V IC = 10mA Ta = 25˚C tr
Response time measurement circuit
10 2
Sig.IN
tf td ts
VCC V1 5ms
Response time
(µs)
10
V1 50Ω V2 td tr ts tf
90% 10%
1
10 –1 10 –2
10 –1
1
10
External load resistance RL (kΩ)
Frequency characteristics
10 VCE = 4V Ta = 25˚C IC = 10mA RL = 10Ω
,,, , ,,, ,
+10V 50kΩ 16V 100µF –
RL
Measurement circuit of frequency characteristics
VCC
AV (dB)
0
Voltage gain
,,
– 10
100Ω 1kΩ
Sig.IN
Sig.OUT 50Ω RL
IC = 10mA
4mAp - p
+
– 20
50Ω
5kΩ
,,,
1 10 10 2 10 3
– 30 10 –1
Frequency f (kHz)
4
,,, ,