CA-IS374x Series High Performance Digital Isolators: Ideal for Industrial Applications

Product Overview

CA-IS374x series is a high performance four-channel digital isolator developed and manufactured by Shanghai ChuanTu Microelectronics Co. This series consists of three models, CA-IS3740, CA-IS3741 and CA-IS3742, each optimised for different application scenarios. These isolators offer isolation voltages up to 5kVRMS and ultra-fast data rates from DC to 150Mbps, making them ideal for use in areas such as industrial automation, motor control and communication systems.

Key Features

1. High isolation performance: Provides isolation voltage up to 5kVRMS (wide-body package), which effectively protects sensitive circuits from high-voltage and high-current transients.

2. Ultra-fast data transmission: supports data transmission rates from DC to 150Mbps to meet high-speed communication requirements.

3. Excellent EMC: Typical common-mode transient inhibition (CMTI) of ±150kV/μs ensures signal integrity in an EMI environment.

4. Wide operating temperature range: -40°C to 125°C, adaptable to a variety of harsh industrial environments.

5. Low power consumption design: consumes only 1.5mA per channel at 1Mbps (5V supply) and 6.6mA at 100Mbps, effectively reducing system power consumption.

6. Various configurations: Provide different channel direction configurations and default output state options to meet various application requirements.

Application Fields

Industrial Automation

In industrial automation systems, the CA-IS374x series can be used to isolate control signals and feedback signals, and protect sensitive control circuits from high-voltage motor drive circuits. Its high-speed data transmission capability ensures real-time control accuracy and responsiveness.

Motor Control

Motor control systems often need to handle high voltages and currents, and the CA-IS374x's high isolation voltage and excellent CMTI performance make it an ideal interface isolation solution. It can safely isolate low-voltage control circuits from high-voltage motor drive circuits while ensuring fast and accurate transmission of control signals.

Medical Equipment

Patient safety is of paramount importance in medical electronic devices, and the CA-IS374x's high isolation performance effectively isolates the patient-contact portion from the main body of the device, preventing hazardous voltages from harming the patient. At the same time, its low power consumption feature helps extend the battery life of portable medical devices.

Solar Inverter

Solar inverters need to operate in high-voltage DC and AC environments, and the CA-IS374x can be used to isolate control circuits and power stages to protect microcontrollers and other sensitive components. Its wide temperature range characteristics also enable it to operate reliably in outdoor environments.

Communication Interface Isolation

The CA-IS374x series is particularly suitable for isolating communication interfaces such as SPI, RS-485, RS-232 and CAN. For example, the CA-IS3741 model features three forward channels and one reverse channel, making it ideal for SPI and RS-485 communication isolation needs.

Conclusion

With its high performance, diverse configurations, and wide range of application adaptability, the CA-IS374x series of digital isolators provides a powerful and flexible isolation solution for industrial and electronic system designers. Whether in communication systems requiring high-speed data transmission or medical devices requiring strict safety isolation, the CA-IS374x series provides reliable performance and excellent protection. With the development of Industry 4.0 and the Internet of Things, these high-performance isolators will play an increasingly important role in ensuring system safety and reliability.

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