SI88320BC-ISR

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Digital isolators play a key role in safety-critical applications where electrical isolation is needed to prevent hazardous voltage spikes between circuits. The SI88320BC-ISR is a world-leading digital isolation product from Silicon Laboratories that can be used to help protect sensitive equipment in these systems. In this article, we will discuss the application fields and working principles of the SI88320BC-ISR.

The SI88320BC-ISR is an integrated isolation solution built for high-performance power systems. It is designed to facilitate the reliable transfer of data and power signals across electrically isolated boundaries while ensuring accuracy and system safety. It features a wide range of enable functions, including digital control, isolation amplifier, line receiver/transceiver and data channel isolators. The SI88320BC-ISR is ideal for system designs that require high-current isolation, robust electrical noise immunity, and enhanced safety requirements.

By combining dynamic on/off-baseline isolation, a 16-bit ADC with up to 0.9 ps of propagation delay, data compander, and RS-485 transceiver, the SI88320BC-ISR provides high-performance isolation for automotive safety and industrial automation applications. It enables reliable communication across electrically isolated circuits and offers unmatched protection against electrical noise, power surges, and voltage spikes. With a unique optically isolated, low power consumption, the SI88320BC-ISR is ideal for use in applications that require high-accuracy isolation and low propagation delay.

To understand the working principle of the SI88320BC-ISR, let’s take a look at the product’s block diagram. The SI88320BC-ISR consists of four main components: a bidirectional isolation amplifier, a switching isolation amplifier, a data compander, and an RS-485 transceiver. The isolation amplifier provides isolated connection between the line receiver/transceiver and the switching isolation amplifier; the data compander transforms the voltage signals to digital signals; and the RS-485 transceiver is used for the communication between the two isolated circuits.

The SI88320BC-ISR features an innovative bidirectional architecture which allows data to travel from either side of the circuit, offering true bi-directional signal isolation. This allows for bidirectional data communication in applications such as industrial automation, allowing one device to send a signal to another device, which can then respond without risk of damaging circuitry. The SI88320BC-ISR also offers superior noise immunity, eliminating interference from both conducted and radiated sources.

The SI88320BC-ISR provides exceptional robustness and reliability against voltage surges and spikes, ensuring that data is accurately transmitted and received between circuits. The product also offers an improved system accuracy, thanks to its lower propagation delay and improved data compander. And finally, the low power consumption allows the device to extend the life of power-sensitive systems.

In conclusion, the SI88320BC-ISR digital isolator from Silicon Laboratories plays a key role in safety-critical applications. It offers improved system performance, reliability, accuracy, and robustness compared to other digital isolation products on the market. This makes it an ideal choice for a wide range of industrial applications, including automotive safety and industrial automation.

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