Optoisolators - Logic Output

The 5962-9800101KTA is a form of optocoupler designed for use in high-reliability, noise-free logic line isolation applications. It is a single-channel logic-output optocoupler which uses a light-activated output MOSFET transistor to transfer digital signals across electrically-isolated circuits. As such, it offers the advantage of increased signal integrity and improved noise rejection reliability, while being smaller in size and using less power than many conventional optocouplers.

Application Field

The 5962-9800101KTA is mainly used in data communications, embedded systems, power control, and motor control, where it is used to transmit digital signals inside a system while providing electrical isolation between the input and output circuits. This isolation ensures that any noise or spikes in the input signal will not be transmitted to the output, thereby protecting both the input and output from damage. Furthermore, its small size and low power consumption make it suitable for use in miniature designs and power-conscious applications. Additionally, the logic-level output can be used directly with digital logic systems, eliminating the need for voltage-level conversion circuitry.

Working Principle

The 5962-9800101KTA consists of an ultra-bright LED emitting infrared light which is optically coupled to a proprietary MOSFET output transistor. When the input voltage is applied to the LED, it emits light which is detected by the output MOSFET, causing it to switch to its “ON” state. The “ON” state of the MOSFET is indicated by a logic-level signal at the MOSFET’s output pin which is connected to the output circuit. When the LED is not emitting light, due to the input voltage being zero or lower than the specified arbitrary voltage, the MOSFET output is switched to its “OFF” state.

Conclusion

The 5962-9800101KTA is a highly reliable and low power optocoupler, particularly suited for use in logic line isolation applications where noise immunity, size, and power consumption are key requirements. Its logical output makes it easy to use with digital logic lines, while its high- voltage isolation and low opto leakage current ensure strong noise protection and good signal integrity.