参数资料
型号: LIA120STR
厂商: IXYS Integrated Circuits Division
文件页数: 8/10页
文件大小: 0K
描述: OPTOISOLATOR ERROR AMP 8-SMD
标准包装: 1,000
通道数: 1
输入类型: DC
电压 - 隔离: 3750Vrms
电流传输比(最小值): 1% @ 5mA
电流传输比(最大): 3% @ 5mA
输出类型: 光电型
安装类型: 表面贴装
封装/外壳: 8-SMD,鸥翼型
包装: 带卷 (TR)
I NTEGRATED C IRCUITS D IVISION
The bandwidth through the part will be:
LIA120
BW Hz
=
Gm CTR FB R 1 R 2
LED C 1
R 2 +
1
P 1
< BW Hz MAX
Where:
P 1 max is 1kHz (6.28krad/s) due to the internal
compensation of the 431.
CTR is the current transfer ratio of the feedback
optocoupler (0.001-0.003).
R LED is the combined impedance of the limiting
resistor and the LED resistance (25 ohms) and Gm is
the transconductance of the 431 (3 Siemens).
However, since some of these elements vary over
operating conditions and temperature, the bandwidth
should be practically limited to less than 40kHz to
avoid oscillations, which is the value computed by
100pF.
Photodiode
The output of the LIA120 is a photodiode capable or
withstanding high voltages. For the most accurate
results, attempt to bias the voltage across the cathode
anode the same as V REF . The load resistors can be
placed in series with the cathode or anode for desired
output polarity.
8
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R04
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