SI3230-E-FM

SI3230-E-FM is a family of digital isolators that use high speed CMOS integrated circuit technology with proven magnetic isolation guaranteed for 2500VRMS for one minute or to the working insulation distance. It is designed for applications where reliable galvanic isolation is necessary, such as industrial control systems, telecom infrastructure and medical equipment. The SI3230-E-FM provides isolation between input and output and also works as an interface between different parts of a system. It helps to protect sensitive components form possible electrical surge and ground loop fault problems.

Application Field

SI3230-E-FM isolation interfaces are used in various areas of communications. It can be used in applications where galvanic isolation is necessary, such as industrial control systems, telecom infrastructure and medical equipment. The digital isolator is also suitable for high speed communication protocols, such as Ethernet, CAN bus and USB, which require communication rates from 8kbits/s to 10Mbits/s. It is also used for RS-232, RS-422 and RS-485 serial communications.

In industrial applications, SI3230-E-FM digital isolators can be used for signal isolation, noise reduction, and power management applications in the distributed control systems. It can be used for sensor to actuator communications, and to provide power to the input circuitry, such as PLCs, PACs, RTUs and other controllers. Furthermore, it can also be used in motor control applications and in HMI interface systems.

The SI3230-E-FM is also used in medical equipment such as diagnostic imaging systems, medical testing equipment, and therapeutic medical instruments, where reliable galvanic isolation is necessary. It is used to provide data transmission between the host system and the peripheral, or between remote sensors and the patient interface.

Last but not least, the SI3230-E-FM is widely used in telecom infrastructure applications, such as telephone exchanges, base stations and switches. It is used to ensure reliable and error-free data transmission between different telecom systems and devices. It is also used to provide isolation between devices, including monitoring and control devices, such as local area networks, PBXs and intelligent hubs.

Working Principle

The SI3230-E-FM digital isolator works on the principle of magnetic coupling. Its input and output are connected to two separate integrated circuits connected by a magnetic core material. An oscillating current with an alternating magnetic field in the core material provides the electrical insulation between the two devices. This way, it provides the necessary isolation between two parts of the system, such as the controller and the device.

The SI3230-E-FM is a four channel digital isolator, meaning it can support 4 different logic signals. It has four separate input channels and one output channel. The input channels are each isolated from the output channel, providing over 2500VRMS of isolation. In order to ensure reliable and error-free data transmission, the isolator has built-in error detection circuits.

The SI3230-E-FM digital isolator is designed with latchup immunity and 3.3V and 5V tolerance. It also has built-in power fail and thermal protection circuitry, which makes it highly reliable and suitable for harsh industrial applications. This isolator is available in a variety of packages, such as the SOIC-8 package, the VQFN-20 package and the Quad Flat Non-leaded (QFN) 8-pin package. Moreover, it is rated for operation temperatures ranging from -40°C to 85°C.

In conclusion, the SI3230-E-FM digital isolator is designed to provide a reliable, high-speed and error-free interface between two modules by providing galvanic isolation. It is used in a variety of applications, including industrial control systems, medical equipment, and telecom infrastructure. By providing protection from electrical surge and ground loop fault problems, it ensures safe and reliable data transmission.