ISO7741QDWQ1

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Digital isolators form the basis of many common communication protocols, such as RS-485, I2C, and CAN bus. They provide a reliable and secure connection between digital circuits and other systems. In this article, we’ll take a look at the ISO7741 series of digital isolators and understand their application field and working principles.

What is ISO7741QDWQ1?

The ISO7741QDWQ1 is a small surface-mount digital isolator that combines both a optocoupler and digital output logic circuit onto a single chip. It was designed to provide reliable isolation between high voltage and low voltage circuits, and has two channels per die that can be used for logic signaling. The device is typically used in digital product designs such as industrial electronic instrumentation, communication systems, and automation systems that require reliable isolation with high speed switching and data transmission.

Application Fields

The ISO7741QDWQ1 digital isolator is an ideal choice for applications where signal isolation is required, such as between a control circuit and an output load, or between a digital bus line and various other circuits. Examples of applications include:

• Embedded computing systems
• Medical equipment
• Automotive control systems
• Industrial automation systems
• High voltage safety systems
• Automatic testing systems
• Robotics

Working Principles

The ISO7741QDWQ1 digital isolator uses optocoupling technology to separate input and output signals. An insulated opto-coupling barrier is made up of two parts: an LED, which provides electrical isolation between input and output signals, and a photodiode detector, which is used to convert the light transmission into a corresponding output signal. This process is driven by a CMOS output logic circuit, which is configured in an open-drain configuration to ensure that relays and solenoids dry-circuit on a short-circuit path.

The key features of the ISO7741QDWQ1 digital isolator include low power consumption of 800nA, low quiescent current of 4µA, and high current power supply of 25 oz-in. The isolator also supports voltage levels of +5V to +30V on both sides and has an immunity to the presence of any magnetic fields. Additionally, it provides channel-to-channel isolation of 1000Vrms, with data rates of up to 1Mbps.

Conclusion

The ISO7741QDWQ1 digital isolator is a reliable solution for providing electrical isolation between digital circuits and other systems. Thanks to its low power consumption, low quiescent current, and high current power supply, as well as the presence of a protective LED and photodiode barrier and a CMOS output logic circuit, the ISO7741QDWQ1 is well-suited for a variety of applications including embedded computing systems, medical equipment, automotive control systems, industrial automation systems, high voltage safety systems, and robotics.

The specific data is subject to PDF, and the above content is for reference