MAX14935FAWE+

Digital Isolators

The MAX14935FAWE+ is a family of digital isolators suitable for bridge large voltage gaps from the same or different domains while maintaining signal integrity. It can suppress conducted emissions and increase safety features in industrial and medical applications under the highest isolation requirements. This isolator product family can bridge a large voltage gap between two different digital domain from 3kV to 18kV in a very wide range of input and output voltages from 1.8V to 5V.

The primary application area for the MAX14935FAWE+ digital isolators is the protection of sensitive electronics connected to noisy input signals. Isolation is necessary to protect low noise measurement instrumentations from transmitting noise to the system they monitor. Another use for digital isolator is system design with high isolation requirements, where physical isolation is needed. That’s why digital isolators are employed in automotive, industrial, and medical applications.

The MAX14935FAWE+ digital isolator family incorporates discrete, ultra-thin Gate Oxide structures, buried isolation barriers, and precision digital circuitry to achieve ultra-high levels of isolation. At the same time, it features a high bandwidth of up to 33 peta-bits and an ultra-low jitter of 300 ps. This level of isolation makes it ideal for robust conversions between 1.8V, 3V3 and 5V Digital domains.

The way that this product family works is by using mono-directional, optically-coupled channels to provide physical isolation between input and output signals. These optically-coupled channels allow electrical isolation without any other input device, such as a transformer. The isolator contains a number of Gallium Arsenide (GaAs) photodiodes, one for each input. A high intensity light source then quickly changes a bias voltage between 0 and 5V, depending on the logic state of the input, which causes each diode to either open or close the photoelectric channel. The voltage across the photodiode translates to the voltage across the “on” state resistance of the digital isolator, resulting in a logic “zero” or “one” on the output.

The MAX14935FAWE+ isolators are designed with advanced control technologies for maximum noise performance and to meet the increasing safety requirements of the medical and industrial markets. In addition, this family offers excellent on-resistance and ultra-high isolation levels that make it a great choice for high-speed signal transfer between 1.8V, 3V3, and 5V domains. This product is also available in industry standard low profile DFN package, allowing the device to be mounted in tight spaces.

Finally, its wide input and output voltage range makes the MAX14935FAWE+ an ideal choice for any application that requires a large voltage gap, including industrial, medical, and automotive systems. With its excellent noise performance and fast switching speeds, this product is well-suited for bridging large voltage gaps between different domains. For applications that require an extremely reliable and secure way to bridge large voltage gaps, the MAX14935FAWE+ should be a top consideration.