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参数资料
| 型号： | HCPL-0302-060E |
| 厂商： | AGILENT TECHNOLOGIES INC |
| 元件分类： | 光电耦合器 |
| 英文描述： | 1 CHANNEL LOGIC OUTPUT OPTOCOUPLER |
| 封装： | SO-8 |
| 文件页数： | 5/16页 |
| 文件大小： | 130K |
| 代理商： | HCPL-0302-060E |
13
LED Drive Circuit Considerations for
Ultra High CMR Performance
Without a detector shield, the
dominant cause of optocoupler
CMR failure is capacitive
coupling from the input side
of the optocoupler, through
the package, to the detector IC
as shown in Figure 19. The
HCPL-3020 and HCPL-0302
improve CMR performance by
using a detector IC with an
optically transparent Faraday
shield, which diverts the
capacitively coupled current
away from the sensitive IC
circuitry. However, this shield
does not eliminate the
capacitive coupling between
the LED and optocoupler pins
5-8 as shown in Figure 20.
This capacitive coupling causes
perturbations in the LED
current during common mode
transients and becomes the
major source of CMR failures
for a shielded optocoupler.
The main design objective of a
high CMR LED drive circuit
becomes keeping the LED in
the proper state (on or off)
during common mode
transients. For example, the
recommended application
circuit (Figure 17), can
achieve 10 kV/s CMR while
minimizing component
complexity.
Techniques to keep the LED in
the proper state are discussed
in the next two sections.
Figure 19. Optocoupler input to output
capacitance model for unshielded
optocouplers.
Figure 20. Optocoupler Input to output
capacitance model for shielded optocouplers.
Figure 21. Equivalent circuit for figure 15 during common mode transient.
Figure 22. Not recommended open collector
drive circuit.
Figure 23. Recommended LED drive circuit for
ultra-high CMR IPM dead time and propagation
delay specifications.
1
3
2
4
8
6
7
5
CLEDP
CLEDN
1
3
2
4
8
6
7
5
CLEDP
CLEDN
SHIELD
CLEDO1
CLEDO2
Rg
1
3
VSAT
2
4
8
6
7
5
+
VCM
ILEDP
CLEDP
CLEDN
SHIELD
* THE ARROWS INDICATE THE DIRECTION
OF CURRENT FLOW DURING –dVCM/dt.
+5 V
+
–
VCC = 18 V
0.1
F
+
–
1
3
2
4
8
6
7
5
CLEDP
CLEDN
SHIELD
+5 V
Q1
ILEDN
1
3
2
4
8
6
7
5
CLEDP
CLEDN
SHIELD
+5 V
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PDF描述 |
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| HCPL-2400 | 1 CHANNEL LOGIC OUTPUT OPTOCOUPLER, 40 Mbps |
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| HCPL-268K-300 | Hermetically Sealed. High Speed. High CMR. Logic Gate Optocouplers |
| HCPL-563K-100 | Receptacle With No Tail |
| HCPL-563K-300 | Receptacle With No Tail |
相关代理商/技术参数 |
参数描述 |
|---|---|
| HCPL-0302-500 | 功能描述:逻辑输出光电耦合器 8MBd 1Ch 0.5mA RoHS:否 制造商:Fairchild Semiconductor 绝缘电压:4243 Vrms 输出类型:Push-Pull 最大传播延迟时间:500 ns 最大正向二极管电压: 最大反向二极管电压: 最大正向二极管电流: 最大连续输出电流:2.5 A 最大功率耗散:100 mW 最大工作温度:+ 100 C 最小工作温度:- 40 C 封装 / 箱体:SO-16 封装:Tube |
| HCPL-0302-500E | 功能描述:逻辑输出光电耦合器 8MBd 1Ch 0.5mA RoHS:否 制造商:Fairchild Semiconductor 绝缘电压:4243 Vrms 输出类型:Push-Pull 最大传播延迟时间:500 ns 最大正向二极管电压: 最大反向二极管电压: 最大正向二极管电流: 最大连续输出电流:2.5 A 最大功率耗散:100 mW 最大工作温度:+ 100 C 最小工作温度:- 40 C 封装 / 箱体:SO-16 封装:Tube |
| HCPL-0302-560 | 功能描述:逻辑输出光电耦合器 8MBd 1Ch 0.5mA RoHS:否 制造商:Fairchild Semiconductor 绝缘电压:4243 Vrms 输出类型:Push-Pull 最大传播延迟时间:500 ns 最大正向二极管电压: 最大反向二极管电压: 最大正向二极管电流: 最大连续输出电流:2.5 A 最大功率耗散:100 mW 最大工作温度:+ 100 C 最小工作温度:- 40 C 封装 / 箱体:SO-16 封装:Tube |
| HCPL-0302-560E | 功能描述:逻辑输出光电耦合器 8MBd 1Ch 0.5mA RoHS:否 制造商:Fairchild Semiconductor 绝缘电压:4243 Vrms 输出类型:Push-Pull 最大传播延迟时间:500 ns 最大正向二极管电压: 最大反向二极管电压: 最大正向二极管电流: 最大连续输出电流:2.5 A 最大功率耗散:100 mW 最大工作温度:+ 100 C 最小工作温度:- 40 C 封装 / 箱体:SO-16 封装:Tube |
| HCPL-0314 | 功能描述:高速光耦合器 1Ch 8mA 400mW RoHS:否 制造商:Avago Technologies 电流传递比: 最大波特率: 最大正向二极管电压:1.75 V 最大反向二极管电压:5 V 最大功率耗散:40 mW 最大工作温度:+125 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-5 封装:Tube |
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