安华高 线性光耦 HCPL-817-00DE

安华高   线性光耦   HCPL-817-00DE

安华高   线性光耦   HCPL-817-00DE

线性光耦是一种用于模拟信号隔离的光耦器件，和普通光耦一样，线性光耦真正隔离的是电流。线性光耦能够保护被测试对象和测试电路，并减小环境干扰对测试电路的影响。

线性光耦的隔离原理与普通光耦没有差别，只是将普通光耦的单发单收模式稍加改变，增加一个用于反馈的光接受电路用于反馈。这样，虽然两个光接受电路都是非线性的，但两个光接受电路的非线性特性都是一样的。这样，就可以通过反馈通路的非线性来抵消直通通路的非线性，从而达到实现线性隔离的目的。

安华高   线性光耦   HCPL-817-00DE

Description

The HCPL-817 contains a light emitting diode optically

coupled to a phototransistor. It is packaged in a 4-pin DIP

package and available in wide-lead spacing option and

lead bend SMD option. Input-output isolation voltage is

5000 Vrms. Response time, tr, is typically 4μs and minimum

CTR is 50% at input current of 5 mA.

Features

• Current Transfer Ratio

(CTR: min. 50% at IF = 5 mA, VCE = 5 V)

• High input-output isolation voltage (Viso = 5000 Vrms)

• Response time

(tr: typ., 4 μs at VCE = 2 V, IC = 2 mA, RL = 100 Ω)

• Compact dual-in-line package

• UL approved

• CSA approved

• IEC/EN/DIN EN 60747-5-2 approved

• Options available:

– Leads with 0.4" (10.16 mm) spacing (W00)

– Leads bends for surface mounting (300)

– Tape and reel for SMD (500)

– IEC/EN/DIN EN 60747-5-2 approvals (060)

Applications

• Signal transmission between circuits of different

potentials and impedances

• I/O interfaces for computers

• Feedback circuit in power supply

安华高   线性光耦   HCPL-817-00DE