ADUM1251ARZ

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Digital isolators are used to protect sensitive circuitry from potentially damaging voltage spikes, transient pulses, and other risky electrical events. The ADUM1251ARZ is a digital isolator designed to provide high-speed digital isolation between two circuits with an opto-coupled, enhanced immunity, and low leakage current.

The ADUM1251ARZ features a high-speed unidirectional digital isolator with an isolation rating of 5kVrms, a switching speed of 15ns, and patented Voltage Clamping Breakdown (VCB) technology. This technology provides an extremely high level of immunity to short duration transients and electrical events. The VCB also ensures a low turn-on voltage, allowing the device to switch faster than other traditional isolated devices, without generating a large amount of heat.

The device is designed using an IC process that produces a bridge circuit with two LEDs and two photodetectors. This bridge circuit design ensures that the two circuits are completely isolated from each other. The two LED emitters are connected to a supply voltage of either 3.3V or 5V and the two photodetectors detect, latch and switch the signal from one side of the bridge circuit to the other. This process allows the two circuits to communicate with each other, while being electrically isolated.

The ADUM1251ARZ uses a digital input/output port to communicate between the two isolated circuits. The digital port supports two-way data transfer between the two isolated circuits, while the device itself is powered by 3V or 5V power supply. The device also features a low on-resistance, which reduces power consumption in high-speed applications.

The ADUM1251ARZ digital isolator provides a wide range of applications within various industries, such as automotive, medical, and industrial applications. The device is also suitable for a wide range of digital communication protocols, including I2C and SPI. In addition, the device is capable of providing isolation between two circuits with different ground potentials, which makes it very suitable for safety-critical applications in harsh environments.

In conclusion, the ADUM1251ARZ digital isolator is an efficient and reliable device for providing isolation between two circuits while allowing for high-speed data communication. The device provides excellent isolation performance with patented VCB technology, while the low on-resistance ensures low power consumption. The device is designed for a wide range of applications, including automotive, medical, and industrial applications.

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