- 您现在的位置：买卖IC网 > PDF目录67717 > IL300-X019 (VISHAY SEMICONDUCTORS) SPECIALTY OPTOELECTRONIC DEVICE PDF资料下载
参数资料
| 型号： | IL300-X019 |
| 厂商： | VISHAY SEMICONDUCTORS |
| 元件分类： | 光电元器件 |
| 英文描述： | SPECIALTY OPTOELECTRONIC DEVICE |
| 封装： | ROHS COMPLIANT, SMD, 8 PIN |
| 文件页数： | 15/15页 |
| 文件大小： | 176K |
| 代理商： | IL300-X019 |
VISHAY
IL300
Document Number 83622
Rev. 1.5, 24-Mar-05
Vishay Semiconductors
www.vishay.com
9
The isolated amplifier provides the PWM control sig-
nal which is derived from the output supply voltage.
Figure 16 more closely shows the basic function of
the amplifier.
The control amplifier consists of a voltage divider and
a non-inverting unity gain stage. The TDA4918 data
sheet indicates that an input to the control amplifier is
a high quality operational amplifier that typically
requires a +3.0 V signal. Given this information, the
amplifier circuit topology shown in Figure 18 is
selected.
The power supply voltage is scaled by R1 and R2 so
that there is + 3.0 V at the non-inverting input (Va) of
U1. This voltage is offset by the voltage developed by
photocurrent flowing through R3. This photocurrent is
developed by the optical flux
created by current flowing through the LED. Thus as
the scaled monitor voltage (Va) varies it will cause a
change in the LED current necessary to satisfy the dif-
ferential voltage needed across R3 at the inverting
input.
The first step in the design procedure is to select the
value of R3 given the LED quiescent current (IFq) and
the servo gain (K1). For this design, IFq = 12 mA. Fig-
ure 4 shows the servo photocurrent at IFq is found to
be 100
A. With this data R3 can be calculated.
For best input offset compensation at U1, R2 will
equal R3. The value of R1 can easily be calculated
from the following.
The value of R5 depends upon the IL300 Transfer
Gain (K3). K3 is targeted to be a unit gain device,
however to minimize the part to part Transfer Gain
variation, Infineon offers K3 graded into ± 5 % bins.
R5 can determined using the following equation,
Or if a unity gain amplifier is being designed (VMON-
ITOR = VOUT, R1 = 0), the equation simplifies to:
Figure 16. Isolated Control Amplifier
R3 =
Vb
IPI
=
3V
100
A
=30K
17164
iil300_16
+
-
Voltage
Monitor
R1
R2
To Control
Input
ISO
AMP
+1
R1=R2
(
VMONITOR
Va
- 1
)
17165
R5 =
VOUT
VMONITOR
R3(R1 + R2)
R2K3
17166
R5 =
R3
K3
17190
相关PDF资料 |
PDF描述 |
|---|---|
| IL300-E-X017 | SPECIALTY OPTOELECTRONIC DEVICE |
| IL300-F | SPECIALTY OPTOELECTRONIC DEVICE |
| IL300-X007 | SPECIALTY OPTOELECTRONIC DEVICE |
| IL300-DE-X007T | SPECIALTY OPTOELECTRONIC DEVICE |
| IL300-F-X001 | SPECIALTY OPTOELECTRONIC DEVICE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IL3085-1-01 | 功能描述:IL3585-1E IsoLoop? Series Interface, Isolated, CAN Evaluation Board 制造商:nve corp/isolation products 系列:IsoLoop? 零件状态:有效 主要用途:接口，隔离式，CAN 嵌入式:- 使用的 IC/零件:IL3585-1E 主要属性:- 辅助属性:- 所含物品:板 标准包装:1 |
| IL3085-1E | 功能描述:RS422, RS485 Digital Isolator 2500Vrms 3 Channel 4Mbps 30kV/μs CMTI 16-SSOP (0.154", 3.90mm Width) 制造商:nve corp/isolation products 系列:IsoLoop? 包装:管件 零件状态:有效 技术:GMR（大型磁阻传感） 类型:RS422，RS485 隔离式电源:无 通道数:3 输入 - 输入侧 1/输入侧 2:2/1 通道类型:单向 电压 - 隔离:2500Vrms 共模瞬态抗扰度（最小值）:30kV/μs 数据速率:4Mbps 传播延迟 tpLH / tpHL（最大值）:150ns，150ns 脉宽失真（最大）:- 上升/下降时间（典型值）:- 电压 - 电源:3 V ~ 5.5 V，4.5 V ~ 5.5 V 工作温度:-40°C ~ 85°C 封装/外壳:16-SSOP（0.154"，3.90mm 宽） 供应商器件封装:16-QSOP 标准包装:100 |
| IL3085-3E | 制造商:NVE Corporation 功能描述:IC TRANSCEIVER RS485 16-SOIC |
| IL3085E | 制造商:NVE Corporation 功能描述:IC TRANSCEIVER RS485 16-SOIC |
| IL31 | 功能描述:晶体管输出光电耦合器 Photodarlington Out Single CTR >200% RoHS:否 制造商:Vishay Semiconductors 输入类型:DC 最大集电极/发射极电压:70 V 最大集电极/发射极饱和电压:0.4 V 绝缘电压:5300 Vrms 电流传递比:100 % to 200 % 最大正向二极管电压:1.65 V 最大输入二极管电流:60 mA 最大集电极电流:100 mA 最大功率耗散:100 mW 最大工作温度:+ 110 C 最小工作温度:- 55 C 封装 / 箱体:DIP-4 封装:Bulk |
发布紧急采购，3分钟左右您将得到回复。