IL716TE

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Digital Isolators play an important role in modern-day electronics, providing galvanic isolation between two connected units. The IL716TE is one such device, used in a wide range of applications and offering a simple yet robust and reliable solution for system isolation. In this article, we will take a look at the IL716TE, its application field and working principle.

The IL716TE is a dual-channel digital isolator designed for use in a variety of isolation applications. The isolated channels are configured to provide signal transfer of up to 25MHz and each meets the requirements of UL94V-0 flammability classification. The two channels use a dc-dc converter topology that provides robust performance and increased power efficiency to support a wide range of application needs.

The IL716TE is ideal for use in motor control, industrial control and data acquisition systems, as well as applications requiring galvanic isolation such as LVDS signal translation, bridge driver circuits, and isolator-based ground potential equalizers. The device features low-off-state leakage current in both channels, allowing it to be used in applications where low-voltage isolation is required. Additionally, the IL716TE\'s low insertion loss and low propagation delay make it suitable for consumer and industrial-level applications.

The IL716TE is built to take advantage of the lower impedance of digital signals, allowing the isolation barrier to carry higher data rates and bandwidth. The device also provides excellent diode isolation during high-frequency transitions, allowing for increased EMI immunity. The two primary channels are configured in a fan-out topology to enable them to be directly connected to standard, 5V logic families, so that no further buffering or voltage level shifting is required.

The IL716TE also uses its primary channels to carry a supply voltage for a secondary channel that can be used to power external circuits, such as an optocoupler or an isolated gate driver. The secondary channel features built-in current-limiting protection to ensure that the connected circuit does not draw too much power from the isolation barrier, making it ideal for applications that require precision power regulation at the system level.

The IL716TE works by processing the signal in two stages. The first stage operates by using a high-speed, low-power CMOS surge device to transfer the input signals across the isolation barrier. This provides a low impedance, low propagation delay interface for transmitting fast digital signals. The second stage is a highly efficient dc-dc converter, which ensures that the two channels are electrically isolated from each other without distortion.

The IL716TE offers a reliable and robust solution for applications requiring signal isolation. The device features low off-state leakage current, low-capacitance diodes for isolation, and low-voltage operation, making it suitable for a wide variety of applications. Additionally, the device also provides isolation and regulation for external circuits, allowing for precision power regulation at the system level. All these features make the IL716TE an important component in the design of digital isolators.

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