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| 型号： | IL300-DEFG-X007 |
| 厂商： | Vishay Intertechnology,Inc. |
| 英文描述： | Linear Optocoupler, High Gain Stability, Wide Bandwidth |
| 中文描述： | 线性光耦，高增益的稳定性，宽带 |
| 文件页数： | 14/15页 |
| 文件大小： | 196K |
| 代理商： | IL300-DEFG-X007 |
www.vishay.com
8
Document Number 83622
Rev. 1.4, 26-Oct-04
VISHAY
IL300
Vishay Semiconductors
Application Considerations
In applications such as monitoring the output voltage
from a line powered switch mode power supply, mea-
suring bioelectric signals, interfacing to industrial
transducers, or making floating current measure-
ments, a galvanically isolated, DC coupled interface
is often essential. The IL300 can be used to construct
an amplifier that will meet these needs.
The IL300 eliminates the problems of gain nonlinear-
ity and drift induced by time and temperature, by mon-
itoring LED output flux.
A PIN photodiode on the input side is optically cou-
pled to the LED and produces a current directly pro-
portional to flux falling on it. This photocurrent, when
coupled to an amplifier, provides the servo signal that
controls the LED drive current.
The LED flux is also coupled to an output PIN photo-
diode. The output photodiode current can be directly
or amplified to satisfy the needs of succeeding cir-
cuits.
Isolated Feedback Amplifier
The IL300 was designed to be the central element of
DC coupled isolation amplifiers. Designing the IL300
into an amplifier that provides a feedback control sig-
nal for a line powered switch mode power is quite sim-
ple, as the following example will illustrate.
See Figure 17 for the basic structure of the switch
mode supply using the Infineon TDA4918 Push-Pull
Switched Power Supply Control Chip. Line isolation
and insulation is provided by the high frequency
transformer. The voltage monitor isolation will be pro-
vided by the IL300.
Figure 12. Amplitude Response vs. Frequency
Figure 13. Amplitude and Phase Response vs. Frequency
Figure 14. Common-Mode Rejection
iil300_12
10 4
10 5
10 6
5
0
-5
-10
-15
-20
F - Frequency - Hz
Amplitude
Response
-
d
B
RL=1.0 Kˇ
RL=10 Kˇ
IF=10 mA, Mod = ±2.0 mA (peak)
iil300_13
dB
PHASE
-
Phase
Response
-
°
103
104
105
106
107
5
0
-5
-10
-15
-20
45
0
-45
-90
-135
-180
F - Frequency - Hz
Amplitude
Response
-
d
B
IFq=10 mA
Mod= ±4.0 mA
TA=25°C
RL=50
iil300_14
10
100
1000
10000
100000 1000000
-130
-120
-110
-100
-90
-80
-70
-60
F - Frequency - Hz
CMRR
-
R
ejection
Ratio
-
d
B
Figure 15. Photodiode Junction Capacitance vs. Reverse Voltage
iil300_15
0
2
4
6
8
10
12
14
Voltage - Vdet
Capacitance
-
p
F
024
6
8
10
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IL300-DEFG-X007 | 制造商:Vishay Semiconductors 功能描述:; Leaded Process Compatible:Yes; Peak Re |
| IL300-DEFG-X007T | 功能描述:高线性光耦合器 Single Linear, High Gain, Wide Bandwidth RoHS:否 制造商:Avago Technologies 输入类型:AC/DC 最大正向二极管电压:1.95 V 最大反向二极管电压:2.5 V 最大输入二极管电流:25 mA 最大功率耗散:60 mW 最大工作温度:+ 100 C 最小工作温度:- 55 C 封装 / 箱体:DIP-8 Gull Wing 封装:Tube |
| IL300-DEFG-X009 | 功能描述:高线性光耦合器 Single Linear, High Gain, Wide Bandwidth RoHS:否 制造商:Avago Technologies 输入类型:AC/DC 最大正向二极管电压:1.95 V 最大反向二极管电压:2.5 V 最大输入二极管电流:25 mA 最大功率耗散:60 mW 最大工作温度:+ 100 C 最小工作温度:- 55 C 封装 / 箱体:DIP-8 Gull Wing 封装:Tube |
| IL300-DEFG-X009T | 功能描述:高线性光耦合器 Single Linear, High Gain, Wide Bandwidth RoHS:否 制造商:Avago Technologies 输入类型:AC/DC 最大正向二极管电压:1.95 V 最大反向二极管电压:2.5 V 最大输入二极管电流:25 mA 最大功率耗散:60 mW 最大工作温度:+ 100 C 最小工作温度:- 55 C 封装 / 箱体:DIP-8 Gull Wing 封装:Tube |
| IL300-DEFG-X016 | 功能描述:高线性光耦合器 Single Linear, High Gain, Wide Bandwidth RoHS:否 制造商:Avago Technologies 输入类型:AC/DC 最大正向二极管电压:1.95 V 最大反向二极管电压:2.5 V 最大输入二极管电流:25 mA 最大功率耗散:60 mW 最大工作温度:+ 100 C 最小工作温度:- 55 C 封装 / 箱体:DIP-8 Gull Wing 封装:Tube |
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