I
NTEGRATED
C
IRCUITS
D
IVISION
www.ixysic.com
4
R04
LIA120
PERFORMANCE DATA*
*The Performance data shown in the graphs above is typical of device performance. For guaranteed parameters not indicated in the written specifi cations, please
contact our application department.
LED Current vs. Cathode Voltage
V
COMP
- Cathode Voltage (V)
I
LED
- Supply Current (mA)
-1.0
15
10
5
0
-5
-10
-15
-0.5 0.0 0.5 1.0 1.5
T
A
=25ºC
V
COMP
=V
FB
LED Current vs. Cathode Voltage
V
COMP
- Cathode Voltage (V)
I
LED
- Supply Current (PA)
-1.0
150
120
90
60
30
0
-30
-60
-90
-120
-150
-0.5 0.0 0.5 1.0 1.5
T
A
=25ºC
V
COMP
=V
FB
Reference Voltage vs.
Ambient Temperature
V
REF
- Reference Voltage (V)
-40
1.30
1.37
1.24
1.21
1.18
-20 0 20406080
I
LED
= 10mA
T
A
- Ambient Temperature (ºC)
Reference Current vs.
Ambient Temperature
I
REF
- Reference Current (PA)
-40
350
300
250
200
150
100
50
-20 0 20406080100
T
A
- Ambient Temperature (ºC)
I
LED
=10mA
R
1
=10k:
Off Current vs. Ambient Temperature
I
(OFF)
- Off Current (nA)
-40
2.5
2.0
1.5
1.0
0.5
0
-20 0 20406080100
V
IN
=10V
V
FB
=0
T
A
- Ambient Temperature (ºC)
LED Forward Current
vs. Forward Voltage
I
LED
- Forward Current (mA)
V
F
- Forward-Voltage (V)
20
15
10
5
0
1.0 1.1 1.2 1.3 1.4 1.5
85ºC
55ºC
25ºC
-5ºC
Dark Current vs. Temperature
I
KAO
- Dark Current (nA)
V
KA
=10V
-40
50
40
30
20
10
0
-10
-20 0 20406080100
T
A
- Ambient Temperature (ºC)
Cathode Current
vs. Ambient Temperature
I
K
- Cathode Current (PA)
V
KA
=5V
I
LED
=20mA
-40
1400
1200
1000
800
600
400
200
0
-20 0 20406080100
T
A
- Ambient Temperature (ºC)
I
LED
=10mA
I
LED
=5mA
I
LED
=1mA
Current Transfer Ratio
vs LED Current
(I
KA
/ I
F
) - Current Transfer Ratio (%)
I
LED
- Forward Current (mA)
V
KA
=5V
0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
10 20 30 40 50
T
A
=-5ºC
T
A
=25ºC
T
A
=55ºC
T
A
=85ºC
Cathode Current
vs. Photodiode Voltage
I
K
- Cathode Current (PA)
V
KA
(V)
0
500
450
400
350
300
250
200
150
100
50
0
12345678910
I
LED
=20mA
I
LED
=10mA
I
LED
=5mA
I
LED
=1mA
T
A
=25ºC
Bandwidth vs. Temperature for
High Frequency Applications
Frequency (kHz)
0
50
40
30
20
10
0
10 20 30 40 50 60 70 80 90
Temperature (ºC)
Voltage Gain vs. Frequency
Voltage Gain, A(V
o
/V
in
) dB
Frequency (kHz)
10
60
40
20
0
100 1000
R
L
=100:
