PS2561-1,-2,PS2561L-1,-2
NORMALIZED CURRENT TRANSFER
RATIO vs. AMBIENT TEMPERATURE
Normalized Current Transfer Ratio CTR
Current Transfer Ratio CTR (%)
CURRENT TRANSFER RATIO vs.
FORWARD CURRENT
450
400
350
300
250
200
150
100
50
0
0.05 0.1
0.5
1
5
10
50
,,,,,,,,,,,,,,,,,,,,,,,,
,,,,,,,,,,,,,,,,,,,,,,,,
,,,,,,,,,,,,,,,,,,,,,,,,
1.0
,,,,,,,,,,,,,,,,,,,,,,,,
,,,,,,,,,,,,,,,,,,,,,,,,
0.8
,,,,,,,,,,,,,,,,,,,,,,,,
,,,,,,,,,,,,,,,,,,,,,,,,
,,,,,,,,,,,,,,,,,,,,,,,,
0.6
1.2
0.4
0.2
0
Normalized to 1.0
at T
A
= 25 ˚C,
I
F
= 5 mA, V
CE
= 5 V
–50
–25
0
25
50
75
100
Ambient Temperature T
A
(˚C)
Forward Current I
F
(mA)
SWITCHING TIME vs.
LOAD RESISTANCE
50
I
C
= 2 mA,
V
CC
= 10 V,
CTR = 290 %
Switching Time t (
µ
s)
10
t
d
t
s
1
t
f
t
r
Switching Time t (
µ
s)
100
1 000
SWITCHING TIME vs.
LOAD RESISTANCE
I
F
= 5 mA,
V
CC
= 5 V,
CTR = 290 %
t
f
t
s
10
t
r
0.1
10
50 100
500 1 k
5 k 10 k
1
100
t
d
500 1 k
5 k 10 k
50 k 100 k
Load Resistance R
L
(Ω)
Load Resistance R
L
(Ω)
FREQUENCY RESPONSE
I
F
= 5 mA,
V
CE
= 5 V
CTR (Relative Value)
1.2
LONG TIME CTR DEGRADATION
TYP.
1.0
0.8
0.6
0.4
0.2
I
F
= 5 mA
T
A
= 60 ˚C
I
F
= 5 mA
T
A
= 25 ˚C
0
Normalized Gain G
V
–5
–10
–15
R
L
= 1 kΩ
–20
100
Ω
300
Ω
0.5 1
2
5
10 20
50 100 200 500
0
10
2
10
3
Time (Hr)
10
4
10
5
Frequency f (kHz)
7
NEC [ NEC ]
