ACPL-W21L-500E

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Optoisolators are electronic components that provide electrical insulation between two circuits with the use of one or more optocouplers. Optocouplers are semiconductor devices that couple an electrical signal from one circuit to another by using light instead of electrical lines. Since the signal is transferred by light, there is no electric current between the two circuits, providing finished product isolation. Optoisolators are typically used in safety applications to separate the external circuit from the internal circuit of a device.

The ACPL-W21L-500E is an optical isolation logic output optocoupler from Avago Technologies. This optocoupler consists of a GaAIAs infrared LED and an NPN silicon phototransistor combined in a very small 6-pin SOT-23 package. The ACPL-W21L-500E has an isolation voltage of 5000VRMS and can transfer digital high speed logic signals with a propagation delay of 250 ns and an input current range of 17 to 24 mA.

The ACPL-W21L-500E has various applications in industries such as the automotive, telecom, industrial, and consumer electronics. This optocoupler is typically used in applications such as logic interfacing, logic level shifting, signal buffering and isolating interfaces, and for general isolation applications. It is possible to connect the ACPL-W21L-500E to transistor circuits, logic gate circuits, and line receivers.

The working principle of the ACPL-W21L-500E is based on the transmission of a light current through a phototransistor and optical receiver connection. The ACPL-W21L-500E features an LED which can be used to transmit an electrical current through an optical signal. This optical signal is then received by the receiver, which in turn activates the phototransistor. When the transistor is activated, it generates a current or voltage that can be measured or processed in the external circuit of the device. The isolation voltage of 5000VRMS of the ACPL-W21L-500E increases the security of the electronic device, as there is no electrical current between the two circuits.

In conclusion, the ACPL-W21L-500E is an optical isolation logic output optocoupler that is suitable for use in a wide range of industrial and consumer electronics applications. This optocoupler consists of a GaAIAs infrared LED and an NPN silicon phototransistor, and it has an isolation voltage of 5000VRMS. The working principle of the ACPL-W21L-500E is based on the transmission of a light current through a phototransistor and optical receiver connection, which can be used to measure or process signals in the external circuit.

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