ADUM4152BRIZ-RL

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

Digital isolators are electronic components designed to provide galvanic isolation between two circuits, while exchanging digital signals with each other. The specific type of digital isolator that we will be reviewing is the ADUM4152BRIZ-RL isolated I/O in its application field and working principle.

The ADUM4152BRIZ-RL isolation IC is ideal for digital isolator applications that require ±2 kV reinforced galvanic isolation, as it provides the highest isolation voltage on the market, as well as industry-leading common-mode transient immunity (CMTI). This isolated I/O component works with an input voltage of 3.3V and has a maximum supply current of 1mA. In addition, it features low power consumption, low output pull-up/pull-down current (3mA max) and fast switching time (5ns typ).

The ADUM4152BRIZ-RL digital isolator includes four isolated channels and operates as two SPDT switch ICs. It offers a high-actuation voltage of 3.7V and a minimum off-state voltage of 0.5V. Moreover, its isolated output has a pull-up/pull-down current of 3mA (max). This digital isolator includes hysteresis of 100mV, making it ideal for applications where greater noise immunity or speed is desired.

The ADUM4152BRIZ-RL is optimized to work in industrial automation, safety engineering, and medical device control systems. Its outputs are typically used in applications where a signal must be transferred across a galvanic isolation barrier or where a signal needs to be converted from one voltage domain to another. It can also be used in motor control circuits, transducer isolation, alarm systems, inductive load sensor isolation and AC/DC power interface circuits.

In terms of the working principle of this device, the ADUM4152BRIZ-RL uses an additional transformer winding that operates in a frequency range from 1 MHz to 6 MHz to enable the isolation between the primary and the secondary side of the device. The transformer consists of two windings that are arranged in a ratio of 1:1 (primary to secondary) and provides galvanic isolation of up to ±2 kV. To transfer the digital signal across the isolation barrier, the transformer passes a high frequency signal between its windings.

The ADUM4152BRIZ-RL then processes the signal using a digital pulse width modulation (PWM) technique. It converts digital data from the primary side to a PWM signal on the primary side. The signals are then retrieved on the secondary side by a dedicated PWM receiver. The conversion from PWM to digital data occurs on the secondary side. This method ensures a high voltage isolation of up to ±2kV, with a common-mode transient immunity of up to 4kV/μs. It also allows the data transmission even during transient events.

In conclusion, the ADUM4152BRIZ-RL is an ideal isolation IC for applications that require high voltage isolation and common-mode transient immunity. It is designed to deliver a maximum insulated output voltage of ±2 kV, while also providing processing power and data transmission even during transient events. The device employs a transformer winding to isolate the primary and secondary side, which provides a high level of galvanic isolation. The PWM technique used for data transmission ensures that a signal can be reliably delivered across the isolation barrier.

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