PS2561-1-A

Optoisolators are electronic components that offer a means of electrical isolation between two discrete circuits. The PS2561-1-A is a type of transistor photovoltaic optoisolator that exchanges digital signals between two electrical circuits, while maintaining a specified isolation voltage. This kind of optoisolator can be applied in a wide range of applications, from embedded systems to safety-critical equipment.

What Is a Transistor Photovoltaic Optoisolator?

A photovoltaic optoisolator consists of an infrared LED embedded in a polycarbonate package in combination with a photosensitive device connected in reverse-parallel manner. This results in an optoisolator with two-in-one functionality. On the receiving side, the optoisolator has a transistor, and on the transmitting side there is an indication LED. This makes it possible to detect the presence of signals sent by the receiver and, if needed, indicate the reception. Between both parts of the optoisolator, the LED and transistor, the electrical isolation is realized with a minimum insulation voltage of 5kV.

PS2561-1-A Application Field

The PS2561-1-A optoisolator is a reliable and cost-effective solution that can be applied in all kinds of embedded system and industrial electronic appliances. It can improve the behavior of digital signals in electrically noisy environments such as factory shop floors. Moreover, safety-critical equipment can also benefit from this type of optoisolator in order to protect the user from shock hazard.

The best-in-class insulation voltage and high-voltage transient immunity of the PS2561-1-A ensure maximum signal integrity. It meets the highest standards of safety and reliability for the most demanding applications. The device also provides extremely tight timing control and precise digital signal conditioning.

PS2561-1-A Working Principle

The PS2561-1-A optoisolator works by transmitting digital signals between two circuits. When a signal is received, the photodiode on the receiver side of the optoisolator absorbs the infrared light from the LED and turns it into a small amount of current. This current is amplified with an NPN bipolar transistor and then applied to the circuit on the receiver side.

The optoisolator also provides a small amount of current in the opposite direction to the transmitter side. This current is used to indicate the presence of the signal and can also be used to amplify the signal. The LED on the transmitter side will emit an infrared light when this current is detected. This is the same process that happens on the receiver side, with the photodiode absorbing the infrared light and turning it into a small amount of current.

The optoisolator ensures that both the transmitter and receiver circuits are completely isolated, thus preventing any interference between them. This ensures that the signal is not distorted or corrupted, and that the electrical signal is reliable and secure. The PS2561-1-A also provides excellent immunity from external sources of interference.

Conclusion

The PS2561-1-A optoisolator is a reliable and cost-effective way to exchange digital signals between two circuits with maximum signal integrity and safety. It provides a wide range of applications, from embedded systems to safety-critical equipment, and ensures electrical isolation between the two circuits. It also offers tight timing control and precise digital signal conditioning.