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ADUM1250ARZ-RL7 - I2C Digital Isolator 2500Vrms | Analog Devices
The ADUM1250ARZ-RL7 is a hot-swappable, dual-channel digital isolator from Analog Devices, specifically designed for I2C interfaces. It provides two bidirectional channels, enabling a complete isolated I2C interface without the need to split signals into separate transmit and receive paths. The device is housed in an 8-pin SOIC package (0.154", 3.90mm width) and offers 2500Vrms isolation, a data rate of 1Mbps, and a common-mode transient immunity (CMTI) of 25kV/µs. Digital isolators are components that transfer digital signals across an isolation barrier, providing galvanic isolation to protect circuits from high voltages, ground loops, and noise. They are essential in industrial, medical, and communication systems where safety and signal integrity are paramount. The ADUM1250ARZ-RL7 belongs to the family of I2C isolators, which are specialized for bidirectional communication protocols like I2C. Key features include non-latching, bidirectional communication channels compatible with I2C interfaces, hot-swap capability, and a wide operating temperature range. The device supports data rates up to 1Mbps, making it suitable for standard and fast-mode I2C. Its high CMTI of 25kV/µs ensures reliable operation in noisy environments, and the 2500Vrms isolation rating provides robust protection. Technically, the ADUM1250ARZ-RL7 uses Analog Devices' iCoupler technology, which employs chip-scale transformers instead of optocouplers, offering higher reliability, lower power consumption, and better performance. The device operates from a 3.0V to 5.5V supply on both sides, and its hot-swap feature allows insertion or removal without disrupting the bus. Typical applications include isolated I2C buses in industrial automation, medical equipment, and power management systems. It is also used in battery management, motor control, and any system requiring galvanic isolation for I2C communication. When designing with this device, ensure proper decoupling on both supply pins and maintain adequate creepage distances on the PCB to meet isolation requirements. The hot-swap feature should be considered in system design to avoid bus contention during power-up.
ADUM1251ARZ - I2C Digital Isolator 2500Vrms | Analog Devices
The ADUM1251ARZ is a hot-swappable, bidirectional I2C digital isolator from Analog Devices, offering 2500Vrms isolation and a data rate of 1Mbps. It comes in an 8-pin SOIC package and operates over a supply range of 3V to 5.5V. This device integrates two channels with non-latching communication, simplifying I2C isolation without splitting signals into separate transmit and receive paths. Digital isolators are components that provide galvanic isolation between two circuits while allowing digital signals to pass. They are essential in systems where ground potential differences or noise could disrupt communication, such as in industrial automation, medical equipment, and power management. The ADUM1251ARZ specifically supports I2C, a widely used two-wire bus, making it a key building block in mixed-voltage and isolated systems. Key features include a common-mode transient immunity (CMTI) of 25kV/µs, ensuring reliable operation in noisy environments. The device supports hot-swap capability, allowing insertion or removal without powering down the bus. Its bidirectional channels are I2C-compatible on Side 2 and I2C-compatible on Side 1, with modified thresholds for compatibility. The propagation delay is 162ns, and the device is available in both tube and tape-and-reel packaging. Technically, the ADUM1251ARZ uses Analog Devices' iCoupler technology, which employs chip-scale transformers instead of optocouplers, offering higher reliability and lower power consumption. The device is specified over the industrial temperature range of -40°C to +125°C, making it suitable for harsh environments. It is RoHS compliant and lead-free. Typical applications include isolating I2C buses in industrial control systems, medical monitoring equipment, and power supply management. The device is also used in battery management systems and automotive electronics where isolation is required for safety and noise immunity. When designing with the ADUM1251ARZ, ensure proper decoupling with 0.1µF capacitors on both supply pins and maintain adequate PCB layout to minimize parasitic capacitance. The hot-swap feature requires careful consideration of bus capacitance and pull-up resistor values to avoid glitches during insertion.
ADUM1251ARZ-RL7 - Hot-Swappable Dual I2C Isolator | Analog Devices
The ADUM1251ARZ-RL7 is a hot-swappable, dual-channel digital isolator from Analog Devices, specifically designed for bidirectional I2C communication. It provides 2500Vrms isolation with a data rate of 1Mbps and a common-mode transient immunity (CMTI) of 25kV/µs. The device operates from a 3.0V to 5.5V supply and is available in an 8-lead SOIC package, making it suitable for space-constrained designs. Digital isolators are components that transfer digital signals across an isolation barrier, typically using capacitive or magnetic coupling, to protect sensitive circuitry from high voltages, noise, and ground potential differences. They replace optocouplers in many applications due to their superior speed, reliability, and integration. The ADUM1251ARZ-RL7 belongs to the iCoupler family, which uses chip-scale transformer technology for isolation. Key features include bidirectional I2C communication without the need for direction control, open-drain interfaces, 30mA current sink capability, and support for hot-swap applications. The device is qualified for automotive applications and operates over a temperature range of -40°C to +125°C. It is RoHS compliant and available in tape and reel packaging. The ADUM1251ARZ-RL7 uses Analog Devices' iCoupler technology, which integrates micro-transformers and high-speed CMOS circuits to achieve reliable isolation. This architecture provides low propagation delay and high CMTI, ensuring robust performance in noisy industrial environments. The device also features non-latching, bidirectional channels, simplifying I2C bus isolation. Typical applications include I2C bus isolation in industrial automation, power management systems, and automotive electronics. It is also used in medical devices and instrumentation where galvanic isolation is required for safety. The device's hot-swap capability allows insertion and removal of boards without disrupting the bus. When designing with the ADUM1251ARZ-RL7, ensure proper decoupling with 0.1µF capacitors on both supply pins. The Side 1 interface is I2C compatible, while Side 2 is fully I2C compliant, so verify the logic levels of connected devices. For high-speed operation, follow the layout guidelines in AN-1109 to minimize emissions.
ADUM1300ARWZ - 3-Ch Digital Isolator 2500Vrms | Analog Devices
The ADUM1300ARWZ is a triple-channel digital isolator from Analog Devices, based on the proprietary iCoupler® technology. It provides 2500Vrms isolation with three unidirectional channels, supporting data rates up to 1Mbps and a common-mode transient immunity (CMTI) of 25kV/µs. The device is housed in a 16-lead SOIC-W (0.295" width) package, suitable for surface-mount assembly. Digital isolators are components that transmit digital signals across an isolation barrier, providing galvanic isolation to protect circuits and users from high voltages, ground loops, and noise. They replace optocouplers in many applications, offering higher speed, better reliability, and lower power consumption. The ADUM1300ARWZ is part of the iCoupler family, which uses monolithic transformer technology to achieve superior performance compared to traditional optocouplers. Key features include three independent isolation channels, a wide supply voltage range of 3.0V to 5.5V, and a maximum data rate of 1Mbps. The device offers 25kV/µs CMTI, ensuring reliable operation in noisy industrial environments. It also features low power consumption, with typical quiescent current of 1.3mA per channel, and operates over a temperature range of -40°C to +105°C. The ADUM1300ARWZ uses a magnetic coupling architecture, where data is transmitted across a thin isolation barrier using integrated transformers. This approach eliminates the need for LEDs and photodiodes, improving performance and reliability. The device includes a refresh mechanism to maintain output states even when the input is static, ensuring correct operation in all conditions. Typical applications include industrial fieldbus communication, motor control, power inverters, and isolated SPI/UART interfaces. The high CMTI and 2500Vrms isolation make it suitable for harsh environments where noise and voltage transients are common. When designing with this device, ensure proper PCB layout with adequate creepage and clearance distances for the isolation rating. Place decoupling capacitors close to the VDD pins and follow the recommended layout guidelines in the datasheet to achieve optimal performance.
ADUM1300ARWZ-RL7 - 3-Ch 2500Vrms Digital Isolator | Analog Devices
The ADUM1300ARWZ-RL7 is a triple-channel digital isolator from Analog Devices, based on the proprietary iCoupler technology. It provides three independent isolation channels with a data rate of 1 Mbps and a withstand voltage of 2500 Vrms. The device operates with supply voltages from 2.7 V to 5.5 V on both sides, enabling voltage translation across the isolation barrier. It is housed in a 16-lead SOIC-W (wide body) package, suitable for surface-mount assembly. Digital isolators are components that transmit digital signals across an isolation barrier, providing galvanic isolation to protect sensitive circuitry from high voltages, ground loops, and noise. They are essential in industrial, medical, and communication systems where safety and signal integrity are critical. The ADUM1300 uses monolithic transformers and high-speed CMOS, offering superior performance compared to traditional optocouplers, such as higher data rates, lower power consumption, and better reliability. Key features include a common-mode transient immunity (CMTI) of 25 kV/µs, ensuring reliable operation in noisy environments. The device supports a wide operating temperature range of -40°C to +105°C, making it suitable for industrial applications. The iCoupler technology eliminates the need for LEDs and photodiodes, simplifying design and improving long-term stability. The ADUM1300ARWZ-RL7 is designed for general-purpose isolation in applications such as industrial fieldbus communication, isolated SPI/UART interfaces, and motor control. Its 1 Mbps data rate is adequate for many control and monitoring signals, while the 2500 Vrms isolation rating provides robust protection. The wide supply range allows interfacing between different voltage domains, such as 3.3 V and 5 V systems. When designing with this isolator, ensure proper PCB layout with adequate creepage and clearance distances to maintain the isolation rating. Bypass capacitors should be placed close to the VDD pins on both sides. The device is RoHS compliant and lead-free, meeting environmental standards. Typical applications include isolated data acquisition, power inverter gate drive isolation, and medical equipment where patient safety requires galvanic isolation. The ADUM1300ARWZ-RL7 is a reliable choice for engineers seeking a compact, high-performance digital isolator.
ADUM1301ARW-RL - Triple-Channel Digital Isolator, 1Mbps, 16-SOIC | Analog Devices
The Analog Devices ADUM1301ARW-RL is a triple-channel digital isolator based on the proprietary iCoupler architecture, providing 2500 Vrms isolation across three independent data channels in a 16-pin SOIC wide-body (RW) package. The grade A speed grade supports data rates up to 1 Mbps with a typical propagation delay of 100 ns and operates from a 2.7 V to 5.5 V supply on either side of the isolation barrier, enabling voltage translation functionality across the barrier. A digital isolator is a semiconductor device that transfers logic-level signals between two electrically separated circuits, replacing legacy optocouplers. Isolator functions are essential isolation domains in any system that requires safety isolation between low-voltage control logic and hazardous high-voltage domains, while still allowing high-speed data exchange. The isolator category belongs to the broader signal-conditioning and isolation IC family, sitting within the interface IC hierarchy. Key features include 25 kV/µs common-mode transient immunity (CMTI), low power operation (1.2 mA per channel at 0-2 Mbps, 5 V supply), 32 mA per channel maximum at 90 Mbps operation, automotive qualification per the datasheet, and a wide-body 16-SOIC package with 7.5 mm body width to support reinforced insulation creepage. The device is qualified for automotive applications and offers default low outputs. The ADUM1301ARW-RL uses monolithic air-core transformer technology combined with high-speed CMOS, avoiding the LEDs and photodiodes used in optocouplers. This eliminates the design difficulties associated with optocouplers (current-transfer-ratio degradation, slow switching, and LED aging) while providing superior common-mode transient immunity and stable timing across temperature. Typical applications include isolated gate logic in motor drives and industrial inverters, isolated data acquisition in PLC systems and process control, isolated SPI / RS-232 / RS-485 interfaces, isolated logic level translation between microcontrollers and power stages, and isolated control signals in medical and energy systems that require reinforced insulation per IEC 60747-17. Design consideration: the wide-body SOIC-16 (0.295" body width) provides the required creepage distance for reinforced insulation at 2500 Vrms. Ensure that no copper traces or vias run beneath the package body between the two isolation domains, and place decoupling capacitors (0.1 µF ceramic) as close as possible to each VDD pin. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone ADuM1300/ADuM1301 datasheet.
ADUM1301ARWZ - 3-Ch Digital Isolator 2500Vrms | Analog Devices
The Analog Devices ADUM1301ARWZ is a triple-channel digital isolator rated at 2500Vrms with a 1 Mbps data rate and 25 kV/µs common-mode transient immunity (CMTI), housed in a 16-pin SOIC-W (0.295 inch / 7.50 mm width) wide-body package. Built on Analog Devices' proprietary iCoupler technology, the device integrates high-speed CMOS with monolithic air-core transformers to transmit digital signals across an isolation barrier without optocouplers, eliminating LED aging and photodiode degradation concerns that plague legacy optoisolators. A digital isolator is a semiconductor device that transfers digital logic states across a galvanic isolation barrier using magnetic, capacitive, or optical coupling rather than a direct electrical connection. Digital isolators sit hierarchically as a sub-category of isolators within the signal conditioning family, which itself belongs to interface ICs and ultimately power management and protection ICs in semiconductor taxonomy. They protect low-voltage microcontrollers and sensitive logic from hazardous high voltages, ground potential differences, and fast transient events on industrial buses, motor drives, and medical equipment. Compared to optocouplers, iCoupler-based parts deliver tighter timing skew, higher CMTI, lower power, and 10x longer operational life. Key features include a 2.7 V to 5.5 V supply range on both sides of the barrier enabling voltage translation, 100 ns maximum propagation delay (tpLH/tpHL), 40 ns pulse-width distortion, and 2.5 ns typical rise/fall time. The wide-body SOIC-16 package provides the creepage and clearance required to achieve the 2500Vrms working voltage rating per UL and VDE reinforced-insulation standards. The ADUM1301ARWZ uses three independent transformer channels, each integrating a CMOS encoder/decoder pair, an RF oscillator, and a miniature transformer coil fabricated on-chip. Differential encoding and refresh-on-demand data transmission reject common-mode noise and ensure deterministic propagation delay across temperature. Typical applications include isolated SPI/UART interfaces for industrial PLCs, isolated gate-drive signaling for IGBT/MOSFET half-bridges, isolated ADC front-ends in motor control, and medical device patient-isolation barriers. The 1 Mbps rating covers most asynchronous serial links and slow synchronous buses. When designing with this device, place 0.1 µF decoupling capacitors on both VDDA/VDDB supply pins within 5 mm of the package, and route the two ground planes on opposite sides of the barrier maintaining at least 7.5 mm creepage per the wide-body SOIC land pattern. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
ADUM1301ARWZ-RL - 3-Ch 1Mbps Digital Isolator SOIC-16 | ADI
The Analog Devices ADUM1301ARWZ-RL is a triple-channel digital isolator built on Analog Devices iCoupler technology, providing 2500 Vrms isolation across three independent data channels in a 16-pin wide-body SOIC (RW-16) package. It supports a maximum guaranteed data rate of 1 Mbps (logic-side A: ARLO default high, output low) and a common-mode transient immunity (CMTI) of 25 kV/µs minimum, making it suitable for industrial fieldbus, motor drive, and isolated SPI/UART links. The -RL suffix denotes the 13-inch reel packaging option. What is a digital isolator? A digital isolator is a semiconductor device that transfers logic signals across an galvanically isolated barrier using chip-scale transformers (iCoupler), capacitive coupling, or GMR/Optocoupler methods, replacing legacy optocouplers with integrated CMOS drivers and receivers. Digital isolators belong to the broader hierarchy: digital isolator -> isolator -> interface IC -> signal chain IC -> semiconductor. Compared to optocouplers, iCoupler devices eliminate LED aging, slow propagation, and CTR degradation, while integrating multiple isolation channels and voltage translation in a single small-outline IC. Key features of the ADUM1301ARWZ-RL include a wide supply operation from 2.7 V to 5.5 V on either side, low default output low-high logic, and high channel-to-channel matching. The three-channel architecture is configured as 2 input/1 output or 1 input/2 output in the same RW-16 footprint, selectable via part-number suffix (ARW/ARWZ = 2/1 channels direction; BRW/BRWZ = 1/2 channels direction). The wide-body SOIC-16 footprint ensures 8 mm minimum creepage/clearance for reinforced insulation applications. The iCoupler architecture monolithically integrates planar transformers and CMOS logic on a single die, achieving propagation delay around 32-100 ns and pulse-width distortion below 40 ns. Channel-to-channel matching is typically within 5 ns, enabling reliable multi-channel timing-critical applications like isolated SPI between a microcontroller and a gate driver. The device also provides 5 kV human-body-model ESD protection on all pins. Typical applications include isolated SPI between a low-voltage MCU and a high-side gate driver in motor drives and solar inverters, isolated RS-485/RS-232 transceivers for industrial fieldbus, isolated DAC/ADC signal transmission, and medical equipment patient connections. The wide-body SOIC and 2500 Vrms rating also suit solar charge controllers and battery management systems. The -RL reel suffix is preferred for high-volume automated SMT assembly. When designing with this device, place 0.1 µF bypass capacitors close to each VDD pin and follow PCB layout guidelines in the manufacturer datasheet to maintain creepage and clearance for reinforced insulation. The wide-body SOIC-16 footprint matches industry-standard optocoupler pinouts for drop-in replacement. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical PCB layout guidance not found in the standalone datasheet, optimized for engineers designing isolated interfaces.
ADUM1301ARWZ-RL7 - 3-Ch 2.5kV Digital Isolator | Analog Devices
The ADUM1301ARWZ-RL7 is a triple-channel digital isolator from Analog Devices, based on the proprietary iCoupler technology. It provides three independent isolation channels with a 2.5 kVrms isolation rating, supporting data rates up to 1 Mbps and a common-mode transient immunity (CMTI) of 25 kV/µs. The device operates with supply voltages from 2.7 V to 5.5 V on both sides, enabling voltage translation across the isolation barrier. It is housed in a 16-lead SOIC-W (0.295", 7.50 mm width) package, suitable for surface-mount assembly. A digital isolator is a component that transfers digital signals across an isolation barrier without a direct electrical connection, using capacitive, inductive, or optical coupling. It provides galvanic isolation to protect sensitive circuitry from high voltages, ground loops, and noise, while maintaining signal integrity. Digital isolators are essential in industrial automation, medical devices, and communication systems where safety and noise immunity are critical. They replace optocouplers in many applications, offering higher speed, better reliability, and lower power consumption. Key features of the ADUM1301ARWZ-RL7 include its 2.5 kVrms isolation voltage, 1 Mbps data rate, and 25 kV/µs CMTI, which ensures reliable operation in noisy environments. The device supports a wide supply range of 2.7 V to 5.5 V, making it compatible with both 3.3 V and 5 V logic systems. It also features a default output state that is high when the input is unpowered, ensuring fail-safe operation. The iCoupler technology uses monolithic transformers, eliminating the LED and photodiode aging issues found in optocouplers. Technically, the ADUM1301ARWZ-RL7 integrates high-speed CMOS and transformer isolation in a single package, providing superior performance compared to optocouplers. The device has a propagation delay of approximately 100 ns and a pulse width distortion of less than 10 ns, ensuring accurate signal transmission. It also offers a wide operating temperature range of -40°C to +105°C, suitable for industrial environments. The isolation barrier is rated for 2.5 kVrms per UL 1577, and the device is RoHS compliant. Typical applications include industrial fieldbus communication, isolated SPI/UART interfaces, motor control, and power supply isolation. The ADUM1301ARWZ-RL7 is ideal for systems requiring reliable signal isolation with minimal power consumption. Its high CMTI makes it suitable for applications with fast-switching power stages, such as motor drives and inverters. When designing with this device, ensure proper PCB layout to maintain isolation spacing and minimize parasitic capacitance. Place decoupling capacitors close to the VDD pins on both sides, and follow the manufacturer's guidelines for creepage and clearance distances to meet safety standards.
ADUM1310ARWZ - 3-Ch Digital Isolator 3750Vrms | Analog Devices
The ADUM1310ARWZ is a 3-channel digital isolator from Analog Devices, based on iCoupler technology that combines high-speed CMOS and monolithic air core transformer technology. It provides outstanding performance superior to optocoupler alternatives by eliminating LEDs and photodiodes, thereby removing design constraints related to nonlinear transfer functions, temperature drift, and aging. This device supports data rates up to 1 Mbps and offers a common-mode transient immunity (CMTI) of 25 kV/µs, ensuring reliable operation in noisy industrial environments. The ADUM1310ARWZ is housed in a 16-lead SOIC-W (wide body, 7.50 mm width) package, operating over a temperature range of -40°C to +105°C. Digital isolators are components that provide galvanic isolation between two circuits while allowing digital signals to pass across the isolation barrier. They are essential in applications where ground potential differences, noise, or safety requirements demand separation of high-voltage and low-voltage domains. The ADUM1310ARWZ belongs to the category of digital isolators, which are part of the broader interface IC family, and are used in industrial automation, motor control, and isolated communication interfaces. Key features include low power operation: at 5 V supply, it consumes 1.7 mA per channel maximum at 0-2 Mbps and 4.0 mA per channel at 2-10 Mbps; at 3 V, it consumes 1.0 mA per channel at 0-2 Mbps and 2.1 mA at 2-10 Mbps. The device supports a supply voltage range of 2.7 V to 5.5 V on both sides, making it versatile for mixed-voltage systems. It also features a patented refresh mechanism that ensures DC correctness in the absence of input logic transitions and during power-up/power-down conditions, a significant advantage over optocouplers. Technically, the ADUM1310ARWZ uses iCoupler technology with monolithic air core transformers to transmit data across the isolation barrier. This approach provides precise timing, low propagation delay, and high reliability. The device has a propagation delay of approximately 100 ns (as per Jotrin data), and it supports a default output state selection via a control pin, allowing designers to predetermine the output state when the input power (VDD1) is absent. Typical applications include industrial fieldbus isolation, isolated SPI/UART interfaces, motor drive signal isolation, and isolated power supply feedback. The high CMTI and low power consumption make it suitable for harsh industrial environments where noise immunity is critical. When designing with this device, ensure proper decoupling capacitors on both supply pins (VDD1 and VDD2) and follow the layout guidelines in the datasheet to maintain isolation performance. The default output state pin should be configured according to system safety requirements.
ADUM1310ARWZ-RL7 - 3-Ch Digital Isolator 3750Vrms | Analog Devices
The ADUM1310ARWZ-RL7 is a 3-channel digital isolator from Analog Devices, based on iCoupler technology. It provides galvanic isolation up to 3750Vrms, with a data rate of 1Mbps and common-mode transient immunity (CMTI) of 25kV/µs. The device operates from a supply voltage of 2.7V to 5.5V on both sides, enabling voltage translation across the isolation barrier. It is housed in a 16-lead SOIC-W (0.295", 7.50mm width) package, suitable for surface-mount assembly. A digital isolator is a component that transfers digital signals across an isolation barrier without a direct electrical connection, using capacitive, inductive, or optical coupling. It is essential in systems where safety, noise immunity, or ground potential differences require galvanic isolation. Digital isolators are part of the broader category of isolation components, which also include optocouplers and isolated amplifiers. They are critical in industrial automation, medical equipment, and communication interfaces. Key features of the ADUM1310ARWZ-RL7 include low power operation: 1.7mA per channel maximum at 5V operation (0-2Mbps) and 4.0mA per channel at 2-10Mbps; at 3V operation, 1.0mA per channel (0-2Mbps) and 2.1mA per channel (2-10Mbps). The device supports three independent isolation channels with a default channel configuration of 2/1 (two forward, one reverse). It also features a refresh mechanism to maintain output states in the absence of input transitions, ensuring reliable operation. Technically, the ADUM1310 uses monolithic air core transformers and high-speed CMOS to achieve superior performance compared to optocouplers, including higher data rates, lower power consumption, and better timing accuracy. The iCoupler technology eliminates the LED and photodiode aging issues, providing longer operational life and more stable performance over temperature. The device is specified for operation from -40°C to +105°C, making it suitable for industrial environments. Typical applications include SPI interfaces, RS-232/RS-485 transceivers, isolated data acquisition systems, and general-purpose signal isolation in industrial control, medical monitoring, and power conversion systems. The high CMTI of 25kV/µs ensures reliable operation in noisy environments with fast-switching power stages. When designing with this device, ensure proper PCB layout with adequate creepage and clearance distances for the required isolation rating. Place decoupling capacitors close to the VDD pins on both sides, and consider the input/output logic levels for voltage translation. The device is RoHS compliant and lead-free.
ADUM1311ARWZ - 3-Ch Digital Isolator 1Mbps | Analog Devices
The ADUM1311ARWZ is a 3-channel digital isolator from Analog Devices, based on iCoupler technology. It combines high-speed CMOS and monolithic air core transformer technology to provide isolation superior to optocouplers. This device supports data rates up to 1 Mbps, with a withstand voltage of 3750 Vrms and common-mode transient immunity of 25 kV/µs. It is available in a 16-pin SOIC-W package (0.295" width) and operates over a wide temperature range. Digital isolators are components that transmit digital signals across an isolation barrier, preventing DC current flow while allowing AC signal transfer. They are essential in systems requiring galvanic isolation for safety, noise immunity, or ground potential differences. The ADUM1311ARWZ uses iCoupler technology, which employs micro-transformers to couple signals, offering advantages over optocouplers such as higher speed, lower power, and better reliability. Key features include low power operation: 1.7 mA per channel max at 0-2 Mbps and 4.0 mA per channel max at 2-10 Mbps for 5V operation; for 3V operation, 1.0 mA per channel max at 0-2 Mbps. The device has a patented refresh feature that ensures DC correctness in the absence of input transitions and during power-up/power-down. It also allows the user to predetermine the default output state in the absence of input VDD1 power via a control pin. The ADUM1311ARWZ is designed for general-purpose isolation in industrial, medical, and communication systems. Its high CMTI and low power make it suitable for isolating SPI, UART, and other serial interfaces. The 16-pin SOIC-W package is widely used and easy to integrate. Typical applications include isolated data acquisition, motor control, power inverters, and isolated sensor interfaces. The device's robust isolation barrier protects sensitive electronics from high-voltage transients and ground loops. When designing with this device, ensure proper decoupling on both power supplies (VDD1 and VDD2) and consider the propagation delay for timing-sensitive applications. The default output state control pin should be set according to system safety requirements.
ADUM1311ARWZ-RL7 - 3-Ch Digital Isolator 3750Vrms | Analog Devices
The ADUM1311ARWZ-RL7 is a 3-channel digital isolator from Analog Devices, based on iCoupler technology. It provides 3750Vrms isolation with a data rate of 1Mbps and a common-mode transient immunity (CMTI) of 25kV/µs. The device operates from a supply voltage of 2.7V to 5.5V on both sides, enabling voltage translation across the isolation barrier. It is housed in a 16-pin SOIC-W (0.295", 7.50mm width) package, suitable for surface-mount assembly. A digital isolator is a component that transfers digital signals across an isolation barrier without a direct electrical connection, using capacitive, inductive, or optical coupling. It is a key element in systems requiring galvanic isolation for safety, noise immunity, or ground potential differences. Digital isolators are part of the broader category of isolation components, which also include optocouplers and isolated amplifiers. They are essential in industrial automation, medical devices, and communication systems where signal integrity and safety are critical. Key features of the ADUM1311ARWZ-RL7 include three independent isolation channels, a wide supply range of 2.7V to 5.5V, and a high CMTI of 25kV/µs, which ensures reliable operation in noisy environments. The device uses monolithic air core transformers, eliminating the need for LEDs and photodiodes, thus improving performance and reliability compared to optocouplers. It also supports data rates up to 10Mbps in other variants, but this specific model is rated for 1Mbps. Technically, the ADUM1311ARWZ-RL7 integrates high-speed CMOS and transformer technology, providing low propagation delay and high noise immunity. The isolation barrier is rated for 3750Vrms, making it suitable for reinforced insulation in many applications. The device is designed to meet safety standards such as UL, CSA, and VDE, though specific certifications should be verified from the datasheet. Typical applications include industrial fieldbus communication, isolated SPI interfaces, motor control, and power supply monitoring. The wide supply range and high CMTI make it ideal for use in harsh industrial environments where ground loops and electrical noise are common. It is also used in medical equipment for patient isolation and in renewable energy systems for inverter control. When designing with this device, ensure proper PCB layout to maintain isolation spacing and minimize parasitic capacitance. Place decoupling capacitors close to the supply pins, and follow the manufacturer's recommendations for creepage and clearance distances to meet safety standards.
ADUM131E1BRZ - 3-Ch 150Mbps Digital Isolator | Analog Devices
The Analog Devices ADUM131E1BRZ is a triple-channel digital isolator based on Analog Devices' iCoupler technology, delivering 150 Mbps data rate and 3.0 kVrms isolation in a 16-pin SOIC-N (0.154", 3.90 mm width) package. The ADuM131E1 variant operates from 2.5 V to 5.5 V on both sides and provides reinforced galvanic isolation across three independent channels configured as 2 transmit / 1 receive (2:1 channel direction). What is a digital isolator? A digital isolator is a semiconductor device that transfers logic-level signals across an isolation barrier while blocking DC and low-frequency transients. Within the broader isolation component hierarchy, digital isolators sit alongside optocouplers (legacy LED-photodiode based devices) as the preferred solution for SPI, I2C, RS-485, GPIO, and high-speed serial interfaces. iCoupler technology uses monolithic air-core transformers rather than LEDs, achieving 10x the data rate, 100x the common-mode transient immunity, and 10x the timing accuracy of optocouplers without the drive current and aging concerns of LED-based designs. Key features of the ADUM131E1BRZ include 75 kV/µs common-mode transient immunity (CMTI), 25 kV/µs typical CMTI at logic thresholds, a maximum propagation delay of 13 ns at 5 V, low pulse-width distortion of 2 ns, and 100 kV/µs surge capability. The 2:1 channel configuration (2 in / 1 out) suits applications where the host MCU is on the low-voltage domain and two sensor or actuator signals must be received from the high-voltage side. The fail-safe output drives a defined logic state when input supply is removed. Architecturally, the ADuM131E integrates four independent transformer channels (one per direction plus a power feedback channel) on a single die using Analog Devices' CMOS-monolithic air-core process. Each channel is independently isolated, and the wide-body SOIC-N package provides 8 mm minimum creepage distance to meet reinforced isolation requirements for industrial and renewable energy safety standards. Typical applications include isolated SPI between microcontroller and gate driver in motor drives, isolated RS-485 transceivers in industrial fieldbus, isolated GPIO in solar inverters and battery management, isolated digital interfaces to setpoint levels in PLC systems, and patient-isolated data acquisition in medical electronics. The 150 Mbps speed grade easily handles standard SPI at 10 MHz, CAN-FD, and isolated UART with margin. When designing with the ADUM131E1BRZ, place 0.1 µF decoupling capacitors at each VDD pin as close to the IC as possible. Ensure the high-voltage and low-voltage ground planes are physically separated (typically with a 4 mm gap) to maintain isolation. The high CMTI rating (75 kV/µs) allows the device to operate adjacent to fast-switching power stages such as SiC MOSFETs and IGBTs without latchup. This page synthesizes distributor pricing, drop-in iCoupler alternatives from Analog Devices and competitor manufacturers, and practical PCB layout guidance not found in the manufacturer datasheet alone.
ADUM1400ARWZ - Quad-Channel Digital Isolator | Analog Devices
The ADUM1400ARWZ is a quad-channel digital isolator from Analog Devices, based on iCoupler technology. It provides 2500Vrms isolation with four unidirectional channels, all in a 16-pin SOIC-W package. This device supports data rates up to 1Mbps and features a common-mode transient immunity (CMTI) of 25kV/µs, ensuring reliable operation in noisy industrial environments. Digital isolators are components that transmit digital signals across an isolation barrier, preventing DC current flow while allowing AC signals to pass. They are essential in applications requiring galvanic isolation for safety, ground loop elimination, and noise reduction. The ADUM1400ARWZ uses monolithic air core transformers and high-speed CMOS, offering superior performance compared to traditional optocouplers, such as higher data rates, lower power consumption, and better reliability. Key features include four independent isolation channels, a wide supply voltage range of 2.7V to 5.5V, and a temperature range of -40°C to +105°C. The device is RoHS compliant and available in a standard SOIC-16 package, making it easy to integrate into existing designs. Its low propagation delay and high CMTI make it suitable for applications where signal integrity is critical. The ADUM1400ARWZ operates with a typical quiescent current of 1.3mA per channel, contributing to low overall power dissipation. The isolation barrier is rated for 2500Vrms, providing robust protection against voltage transients. The device also features an enable function on the input side, allowing the outputs to be placed in a high-impedance state for multiplexing or power saving. Typical applications include industrial fieldbus communication, motor control, power supply isolation, and medical equipment. In motor drives, the ADUM1400ARWZ isolates the control signals from the high-voltage power stage, preventing noise from corrupting the logic signals. In medical devices, it provides patient isolation, ensuring safety and compliance with stringent standards. When designing with this device, ensure that the input and output grounds are properly separated and that bypass capacitors are placed close to the VDD pins. The enable pin can be used to disable the outputs during power-up sequencing, preventing glitches on the isolated side.
ADUM1400ARWZ-RL7 - Quad Digital Isolator 1Mbps | Analog Devices
The ADUM1400ARWZ-RL7 is a quad-channel digital isolator from Analog Devices, based on iCoupler technology. It provides 4 unidirectional isolation channels with a data rate of 1 Mbps, a withstand voltage of 2500 Vrms, and a common-mode transient immunity (CMTI) of 25 kV/µs. The device is housed in a 16-pin SOIC-W (0.295", 7.50mm width) package, suitable for surface-mount assembly. It operates over a wide supply voltage range of 2.7V to 5.5V on both sides, enabling use in mixed-voltage systems. Digital isolators are components that transmit digital signals across an isolation barrier, providing galvanic isolation to protect sensitive circuitry from high voltages, ground loops, and noise. They are essential in industrial automation, medical equipment, and communication systems where safety and signal integrity are paramount. Unlike optocouplers, iCoupler digital isolators use monolithic air core transformers and high-speed CMOS, offering superior performance, reliability, and integration. Key features of the ADUM1400ARWZ-RL7 include its 4/0 channel directionality (all channels forward), 1 Mbps data rate, 25 kV/µs CMTI, and low power consumption. The device supports a wide temperature range of -40°C to +105°C and is RoHS compliant. Its iCoupler technology eliminates the need for external components like LEDs and photodiodes, simplifying design and improving long-term stability. Technically, the ADUM1400ARWZ-RL7 integrates a high-speed CMOS interface with monolithic transformers, achieving isolation ratings up to 2500 Vrms. The device provides excellent noise immunity and low propagation delay, making it suitable for isolating SPI, UART, and other digital interfaces. Its bidirectional capability (in other variants) and multiple channel configurations offer design flexibility. Typical applications include industrial fieldbus isolation, isolated SPI/UART interfaces, motor control, and power supply monitoring. The device is also used in medical devices where patient safety requires galvanic isolation. Its compact SOIC-16 package and low power consumption make it ideal for space-constrained designs. When designing with this device, ensure proper PCB layout with adequate creepage and clearance distances to maintain isolation ratings. Decouple both supply rails with 0.1 µF capacitors close to the pins. The device does not require external components for isolation, but careful attention to ground plane separation is recommended.
ADUM1400CRWZ-RL - 4-Ch 90Mbps Digital Isolator 2.5kV | SOIC-16
Analog Devices ADUM1400CRWZ-RL is a 4-channel digital isolator with 4/0 channel directionality, based on Analog Devices' iCoupler technology. It delivers up to 90 Mbps data rate, 2500 Vrms isolation voltage, and 25 kV/us minimum common-mode transient immunity (CMTI) in a 16-SOIC (0.295 inch / 7.50 mm width) package supplied on a 13-inch reel (RL suffix). A digital isolator is a semiconductor device that transfers data across an isolation barrier while blocking DC and low-frequency ground potential differences. The ADUM1400 belongs to the broader category of signal isolation ICs, sitting between optocouplers (legacy LED + photodiode technology) and newer transformer- or capacitive-coupled CMOS isolators. iCoupler technology combines high-speed CMOS logic with monolithic air-core transformers on a single silicon die, eliminating the LED aging and current-drive concerns of optocouplers. Key features include 90 Mbps guaranteed data rate (NRZ), 2.5 ns typical propagation delay, 2 ns pulse-width distortion, and 25 kV/us CMTI which prevents data corruption during switching transients on the ground reference. The part operates from 2.7 V to 5.5 V on both sides independently, supporting level translation between mixed-voltage domains. The CR grade specifies a 0-25 Mbps maximum guaranteed data rate at 5 V (CW grade 90 Mbps) with low dynamic current consumption of 1.0 mA per channel at 0-2 Mbps. Architecturally the ADUM1400 integrates four independent isolation channels with on-chip transformers and CMOS refresh circuitry on both sides of the barrier. Refresh cycles reconstruct the input logic state at the output every 1 us or less, ensuring deterministic output state during long input low-impedance intervals without an external clock. Typical applications include industrial fieldbus isolation (RS-485, RS-232, CAN, I2C), microcontroller servo-loop feedback isolation, motor-drive gate-driver signal isolation, and isolated SPI or GPIO interfaces for medical, solar inverter and PLC systems. When designing with this device, place 0.1 uF bypass capacitors on both VDD1 and VDD2 pins within 2 mm of the IC, and route the high-speed signals with 50 ohm controlled impedance. The exposed lead frame pad is electrically floating and must not be connected. This page aggregates drop-in alternatives, parametric comparisons, and design notes not found in the manufacturer datasheet, giving design engineers a single consolidated view for sourcing decisions as of 2026-10-06.
ADUM1401ARWZ - Quad-Channel Digital Isolator | Analog Devices
The ADUM1401ARWZ is a quad-channel digital isolator from Analog Devices, based on iCoupler technology. It provides 4 channels of isolation with 3/1 channel directionality, meaning three channels are forward-direction and one is reverse-direction. The device is housed in a 16-pin SOIC-W (wide body) package and supports data rates up to 1 Mbps. It offers 2500 Vrms isolation voltage and a common-mode transient immunity (CMTI) of 25 kV/µs, making it suitable for industrial and automotive applications where robust isolation is required. A digital isolator is a component that transfers digital signals across an isolation barrier, providing galvanic isolation between two circuits. This prevents dangerous voltage transients, ground loops, and noise from propagating between systems. Digital isolators are essential in applications such as motor drives, power inverters, medical equipment, and communication interfaces, where safety and signal integrity are paramount. They replace traditional optocouplers, offering higher speed, lower power consumption, and better reliability. Key features of the ADUM1401ARWZ include low power operation: 1.0 mA per channel maximum at 5 V operation for data rates up to 2 Mbps, 3.5 mA per channel at 10 Mbps, and 31 mA per channel at 100 Mbps. At 3 V operation, the power consumption is even lower. The device operates over a supply voltage range of 2.7 V to 5.5 V on both sides, and it is specified for the industrial temperature range of -40°C to +105°C. The propagation delay is typically 100 ns, and the device features a default output state of high when the input is unpowered. The ADUM1401ARWZ uses monolithic air core transformer technology combined with high-speed CMOS, providing superior performance compared to optocouplers. The isolation barrier is rated for 2500 Vrms, and the device meets safety standards such as UL 1577 and IEC 60747-5-5. The package is a 16-lead SOIC-W, which is widely used and easy to solder. The device is RoHS compliant and lead-free. Typical applications include industrial field bus isolation, SPI and I2C isolation, motor control, power supply isolation, and isolated data acquisition. The ADUM1401ARWZ is particularly well-suited for isolating microcontroller interfaces in noisy industrial environments, where its high CMTI ensures reliable operation in the presence of fast transients. When designing with this device, ensure that both power supplies are decoupled with 0.1 µF capacitors close to the VDD pins. The input and output grounds must be separated, and the PCB layout should maintain adequate creepage and clearance distances for the isolation rating. The default output state is high, which should be considered in system design to avoid unintended logic states during power-up.
ADUM1401ARWZ-RL7 - Quad Digital Isolator 1Mbps | Analog Devices
The ADUM1401ARWZ-RL7 is a quad-channel digital isolator from Analog Devices, based on iCoupler technology. It provides 3/1 channel directionality, meaning three channels are forward-direction and one is reverse-direction. The device is housed in a 16-pin SOIC-W (wide body) package and is rated for 2500Vrms isolation voltage. It supports data rates up to 1Mbps and offers a common-mode transient immunity (CMTI) of 25kV/µs. The operating supply voltage ranges from 2.7V to 5.5V, making it compatible with a variety of logic levels. A digital isolator is a component that provides electrical isolation between two circuits while allowing digital signals to pass across the isolation barrier. Unlike optocouplers, which use LEDs and photodiodes, iCoupler technology uses monolithic air core transformers and high-speed CMOS to achieve isolation. This results in superior performance characteristics such as higher data rates, lower power consumption, and better reliability. Digital isolators are essential in applications where ground potential differences, noise, or safety requirements demand galvanic isolation, such as in industrial automation, medical equipment, and communication systems. Key features of the ADUM1401ARWZ-RL7 include its 2500Vrms isolation rating, 1Mbps data rate, and 25kV/µs CMTI. The device operates over a wide temperature range of -40°C to +105°C and is RoHS compliant. The wide-body SOIC-16 package provides adequate creepage and clearance distances for high-voltage isolation. The device also features an enable pin for output control, which can be used to place outputs in a high-impedance state. Technically, the ADUM1401 uses Analog Devices' iCoupler technology, which integrates micro-transformers on a CMOS die. This architecture eliminates the need for external components and provides a more reliable isolation solution compared to optocouplers. The device has a propagation delay of approximately 100ns and a pulse width distortion of 40ns, ensuring accurate signal transmission. The output default state is HIGH, which is important for safety-critical applications where a fail-safe state is required. Typical applications include industrial fieldbus isolation, SPI isolation, RS-485 isolation, and general-purpose signal isolation in motor drives, power inverters, and medical devices. The ADUM1401 is particularly suited for applications requiring high reliability and low power consumption. When designing with this device, ensure proper PCB layout to maintain isolation spacing and place decoupling capacitors close to the VDD pins. Also, consider the default output state (HIGH) when designing fail-safe circuits.
ADUM1401CRWZ - 4-Ch 90Mbps Digital Isolator 2.5kV | ADI
The Analog Devices ADUM1401CRWZ is a quad-channel digital isolator based on Analog Devices iCoupler technology, providing 4 unidirectional isolation channels at up to 90 Mbps data rate in a 16-pin wide-body SOIC package with 2500 Vrms isolation. It combines high-speed CMOS and monolithic air-core transformer technology, delivering performance characteristics that outperform optocoupler-based alternatives by eliminating LEDs and photodiodes from the signal path. A digital isolator is an interface IC that transfers logic-level signals across a galvanic isolation barrier using magnetic, capacitive, or optical coupling rather than a direct electrical connection. Digital isolators sit at the boundary between hazardous and safe voltage domains, isolating high-voltage transients (such as motor drive switching edges, grid-line transients, or medical-patient leakage paths) from low-voltage logic that would otherwise be damaged. In the broader component hierarchy, the ADUM1401 belongs to the digital isolator category, which is itself a sub-category of interface ICs and broader signal-conditioning/isolation devices used in power management, motor control, and industrial communication systems. Key features include 90 Mbps guaranteed data rate (CRWZ grade), 25 kV/µs common-mode transient immunity (CMTI), 32 ns typical propagation delay, 2.7 V to 5.5 V wide supply range on both sides, and per-channel current draw of 1.0 mA at 0-2 Mbps / 31 mA at 100 Mbps at 5 V. Default channel direction is 3-out / 1-in (the ADUM1400 variant reverses to 0-out / 4-in while ADUM1402 swaps mid-channel orientation). The wide-body 16-SOIC (RWZ) package provides the required creepage/clearance for 2500 Vrms reinforced isolation per UL 1577 and IEC 60747-17. The architecture uses four separate transformer channels monolithically integrated on-chip, driven by an internal oscillator and edge-detect encoder on the primary side and decoded by a comparator/latch network on the secondary side. Refresh pulses are sent periodically to maintain DC correctness, with explicit one-cycle latency per channel direction. Typical applications include RS-232/RS-485 transceiver isolation, SPI interface isolation between MCU and ADC, isolated gate-drive signal paths in motor drives and solar inverters, industrial 4-20 mA loop isolation, and medical equipment patient-isolation barriers. Designers should provide 0.1 µF bypass capacitors on each VDD pin placed within 2 mm of the IC, observe wide-body SOIC PCB creepage of at least 8 mm to maintain rated isolation, and consider ADUM1400/ADUM1402 if different default channel orientations are required. This page synthesizes cross-brand drop-in equivalents, parametric comparison against the ADUM1400/1402 family, and practical PCB creepage/decoupling guidance not consolidated in the manufacturer datasheet.
ADUM1402BRWZ - 4-Ch 2/2 Digital Isolator 10Mbps 16-SOIC | Analog Devices
The Analog Devices ADUM1402BRWZ is a quad-channel digital isolator with 2/2 channel directionality based on Analog Devices iCoupler® technology. Combining high-speed CMOS and monolithic air-core transformer technology, the device delivers up to 10 Mbps data rate, 2500 Vrms isolation, and 25 kV/µs common-mode transient immunity (CMTI) in a 16-pin SOIC-W (0.295"/7.5 mm width) package. It operates with supply voltages from 2.7 V to 5.5 V on either side, supporting voltage translation across the isolation barrier. A digital isolator is an integrated circuit that transfers logic-level signals between two galvanically isolated voltage domains using a non-galvanic barrier. Unlike optocouplers, which use LED-photodiode pairs to cross the isolation gap, iCoupler devices embed miniature air-core transformers on-chip. This category sits within signal isolation, in the broader interface IC taxonomy, and is foundational to industrial, automotive, and medical systems that must satisfy IEC 60730, IEC 60950, or IEC 62368 safety and creepage requirements. Key features of the ADUM1402BRWZ include low dynamic power consumption (1.0 mA per channel at 0 Mbps scaling up to 31 mA per channel at 100 Mbps), tight channel-to-channel matching, and an SOIC-16W footprint with 8 mm of creepage - sufficient for 250 Vrms reinforced isolation per UL 1577. The 2/2 directionality places two channels running side-1 to side-2 and two channels running side-2 to side-1, allowing bidirectional UART, SPI, or RS-485-style signaling in a single chip. Technically, the iCoupler architecture pairs CMOS drivers with on-die transformers wound around a planar air core. Differential signaling across the transformer, with refresh pulses on every DC transition, eliminates LED-aging concerns and produces <2 ns pulse-width distortion at 5 V operation. The monolithic air core gives superior CMTI (>25 kV/µs) compared to optocouplers, which typically achieve only 10-15 kV/µs. Typical applications include isolated SPI/UART interfaces in PLCs, isolated gate-driver signal paths in motor drives, battery management isolation in EV chargers, and medical-device patient-isolated data acquisition. The wide supply range and translation capability make it equally at home between 3.3 V MCUs and 5 V sensors. When laying out the PCB, provide at least 8 mm of creepage between the side-1 and side-2 copper pours, place 0.1 µF VDD bypass capacitors within 2 mm of each supply pin, and avoid routing any side-1 trace beneath the side-2 plane. This prevents contamination of the 2500 Vrms barrier by stray flux or contamination. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, application notes, and practical design guidance not aggregated on the manufacturer datasheet alone - giving the engineer a one-stop sourcing reference for the ADUM1402BRWZ.
ADUM1402CRWZ-RL - 4-Ch 90Mbps Digital Isolator SOIC-16 | ADI
The Analog Devices ADUM1402CRWZ-RL is a quad-channel digital isolator based on Analog Devices' iCoupler technology, delivering 90 Mbps data rate with 2/2 channel directionality in a 16-pin SOIC-W (7.5 mm) package. It provides 2500 Vrms isolation with 25 kV/µs common-mode transient immunity (CMTI), combining high-speed CMOS and monolithic air-core transformer technology on a single die. What is a digital isolator? A digital isolator is a semiconductor device that transfers logic signals across an isolation barrier while blocking high voltages, galvanically separating grounds between systems. Digital isolators belong to the broader category of signal isolation ICs, which also includes optocouplers (LED + photodiode) and capacitive-coupled isolators. iCoupler technology uses chip-scale transformers with air-core windings, replacing LEDs and photodiodes with magnetic coupling. This eliminates LED degradation, reduces power consumption, improves data-rate capability (Mbps vs Mb), and provides tighter pulse-width distortion than optocouplers. Within the iCoupler family, the ADuM14xx series provides four isolation channels with various directionality options. Key features of the ADUM1402CRWZ-RL include 32 ns maximum propagation delay (tpLH/tpHL matched), 2 ns maximum pulse-width distortion, 2.5 ns typical rise/fall time, and operation from 2.7 V to 5.5 V on both sides of the barrier enabling voltage translation across isolation. The C grade indicates a 90 Mbps data rate. Low-power operation scales with data rate - 1.0 mA per channel at 0-2 Mbps, 3.5 mA at 10 Mbps, and 31 mA at 100 Mbps equivalent. The 16-pin SOIC-W (RW-16) package supports surface-mount assembly. The ADUM1402CRWZ-RL is widely used in industrial fieldbus isolation (RS-485, RS-232, CAN, SPI, I2C), motor drive gate-driver signal isolation, medical equipment patient-isolation interfaces, and renewable-energy inverter control. The high CMTI rating allows reliable operation in noisy switching environments where fast-rising common-mode transients would otherwise corrupt data in slower optocouplers. When designing, observe the recommended decoupling capacitor placement, ensure VDD1 and VDD2 supplies are well regulated (isolated domains), and respect the 16-pin SOIC-W 7.5 mm body footprint to avoid PCB layout errors. This page synthesizes distributor pricing, drop-in alternatives, and practical isolation design notes not found in the manufacturer datasheet alone.
ADUM140D0BRZ - Quad 150Mbps Digital Isolator 3kV | Analog Devices
The Analog Devices ADUM140D0BRZ is a quad-channel digital isolator based on the proprietary iCoupler technology, delivering 3000 Vrms isolation with 150 Mbps data rate per channel in a 16-pin SOIC-N (0.154", 3.90 mm body) package. It provides 4:0 channel directionality (four forward, zero reverse), 75 kV/µs common-mode transient immunity (CMTI), and robust CMOS output stages, making it well suited for industrial bus isolation, SPI/serial-peripheral isolation, and RS-485/RS-232 isolation in noisy environments. Digital isolators using iCoupler technology combine high-speed CMOS with monolithic air-core transformers to transmit data across an isolation barrier using transformer-coupled magnetic fields rather than optical (LED/photodiode) coupling. Compared to optocouplers, iCoupler parts offer higher data rates (150 Mbps versus tens of kbps typical), tighter channel-to-channel matching, lower dynamic power consumption, and integrated fail-safe options that guarantee a deterministic output state when input power is removed. The ADUM140D family sits in the digital isolator -> isolator -> interface IC -> signal chain hierarchy within the broader interface and connectivity taxonomy. Key specifications include a 3.0 kVrms / 3.75 kVrms reinforced isolation rating per UL 1577 / IEC 60747-17 standards, a wide 1.7 V to 5.5 V supply range that supports level translation across mixed-voltage rails, and a propagation delay of approximately 13 ns typical. The integrated DC correctness ensures valid logic levels at the output even during prolonged input quiescence, addressing a long-standing optocoupler weakness. Two fail-safe modes are available: Pin 2 = DISABLE1 (high-Z output on Side 1 disable) and Pin 10 = NIC (default low output on Side 2). Typical applications span industrial fieldbus isolation (PROFIBUS, Modbus, CAN), USB and RS-232/RS-485 transceiver isolation, microcontroller SPI/UART interface isolation, and battery management systems requiring high-voltage galvanic isolation. Designers select this part for environments where switching-mode converters and motor drives inject high dV/dt noise across grounds, and where high-speed digital signaling must traverse a safety barrier. Design considerations include bypassing each supply pin with a 0.1 µF ceramic capacitor placed as close as possible to the IC, ensuring PCB creepage and clearance support the rated isolation voltage, and verifying the fail-safe variant (D0 = Pin 2 DISABLE1 active, Pin 10 NIC) matches system startup behavior. Compared to LED-based optocouplers, the ADUM140D0BRZ eliminates LED aging, current-limiting resistor selection, and slow rising-edge propagation delay. This page synthesizes distributor pricing as of 2026-10-06, same-brand drop-in alternatives from the ADuM140D family, cross-brand equivalent options verified from web data, and practical design notes not consolidated on the manufacturer product page.
ADUM140D1BRZ - 150Mbps Quad Digital Isolator | Analog Devices
The Analog Devices ADUM140D1BRZ is a 4-channel general-purpose digital isolator rated at 3000 Vrms with a 150 Mbps maximum data rate and 75 kV/us common-mode transient immunity (CMTI), housed in a 16-pin SOIC (0.154", 3.90 mm width) package. Built on Analog Devices' proprietary iCoupler technology, it transfers data across an isolation barrier using on-chip transformer windings rather than optocouplers' LEDs and photodiodes, eliminating the slow rise/fall times and current-drive requirements inherent to optical coupling. A digital isolator is an integrated circuit that transmits digital signals across a galvanically isolated domain while blocking DC and low-frequency AC, enabling safe interface between high-voltage and low-voltage circuits. Within the broader power management and signal chain hierarchy, digital isolators sit between the optocoupler (legacy) and the digital isolator (modern CMOS), used wherever a logic-level signal must cross a safety-rated barrier. Key features of the ADUM140D1BRZ include four independent isolation channels in a 4:0 directional configuration (four forward, zero reverse), default low output behavior on power-loss (the "1" channel option sets outputs to a deterministic state when input supply is missing), 10 ns typical propagation delay, and 2.5 V / 3.3 V / 5 V level translation on both sides of the barrier. The SOIC-16 wide-body package supports 3 kV rms reinforced isolation per UL 1577 / IEC 60747-17, while the wider SOIC-16W variant supports 3.75 kV rms and 5 kV rms reinforced isolation grades. Architecturally, the device pairs an encoder-side chopper-stabilized oscillator with planar transformer coils and a decoder-side Schmitt-trigger receiver. This topology provides dc-correctness in the absence of input transitions, and the high CMTI ensures reliable operation in noisy industrial environments where fast switching transients appear on the ground reference. Typical applications include SPI/data converter isolation, RS-485/RS-232 transceiver isolation, industrial field bus isolation (CAN, Profibus), and general-purpose multichannel isolation in motor drive, solar inverter, and PLC I/O modules. The wide-body SOIC footprint enables drop-in upgrades from legacy ADuM140x and ADuM141x designs. When designing with this device, place 0.1 uF bypass capacitors adjacent to both VDD pins to decouple the chopper oscillator, and ensure the supply rise-time does not violate the soft-start window. The "1" fail-safe option drives outputs low when input power is absent, making it compatible with systems where a defined reset state is required.