FOD2711 Datasheet, PDF (9/15 Pages) Fairchild Semiconductor – optically isolated error amplifier

OPTICALLY ISOLATED
ERROR AMPLIFIER
FOD2711
Fig. 18 Collector Current vs Collector Voltage
35
T_A = 25⁰C
30
25
I_LED = 20mA
20
15
I_LED = 10mA
10
I_LED = 5mA
5
I_LED = 1mA
0
0
1
2
3
4
5
6
7
8
9 10
VCE - COLLECTOR-EMITTER VOLTAGE (V)
Fig. 19 Rate of Change Vref to Vcomp vs Temperature
-0.2
-0.4
-0.6
-0.8
-1.0
-1.2
-1.4
-1.6
-60 -40 -20
0
20
40
60
TEMPERATURE - °C
80 100 120
Fig. 20 Voltage Gain vs Frequency
VCC = 10 V
IF = 10 mA
0
-5
RL=100Ω
-10
-15
0.1
RL=1kΩ
RL=500Ω
1
10
100
FREQUENCY - KHZ
1000
© 2003 Fairchild Semiconductor Corporation
Page 9 of 15
4/14/03