接口IC
子分类
产品（1020)
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.
ADUM140D1BRZ-RL7 - 150Mbps Quad Digital Isolator | Analog Devices
The Analog Devices ADUM140D1BRZ-RL7 is a quad-channel digital isolator based on Analog Devices iCoupler technology, delivering 150 Mbps data rate, 3000 Vrms isolation, and 75 kV/us CMTI in a 16-pin SOIC wide-body package. The device combines high-speed CMOS with monolithic air-core transformer technology to provide four independent isolation channels in a unidirectional 4:0 (four transmit, zero receive) configuration. A digital isolator is a semiconductor device that transmits digital signals across an isolation barrier using magnetic, capacitive, or optical coupling while blocking DC and low-frequency AC between the input and output sides. Digital isolators are categorized within the broader signal-isolation hierarchy as: digital isolator -> isolator -> interface IC -> integrated circuit. They are widely used in place of optocouplers to deliver higher speed, lower power, tighter channel-to-channel matching, and superior common-mode transient immunity, which is critical in industrial, medical, and renewable-energy systems that must withstand fast switching transients on the ground reference. Key features include a maximum data rate of 150 Mbps, propagation delay of 13 ns typical, pulse-width distortion of 3 ns maximum, and channel-to-channel matching of 3 ns maximum. The device operates from a 1.8 V to 5 V supply on both sides, supports 3.0 V to 5.5 V level translation, and consumes 11 mA typical per channel at 5 V. Two fail-safe output options are available within the ADuM140D family: the default state-high and the state-low variants are selected by part suffix. The 16-SOIC wide-body package provides a minimum clearance and creepage distance suitable for reinforced insulation at 3000 Vrms working voltage per IEC 60747-17 (VDE 0884-17). The iCoupler architecture uses chip-scale transformers rather than LEDs and photodiodes, eliminating the aging, CTR degradation, and slow response inherent to optocouplers. Each channel contains an encoder/decoder pair and a refresh circuit that maintains DC correctness at the output even in the absence of input transitions, preventing long-term settling errors. Typical applications include isolated SPI/RS-485/RS-232 interfaces, gate driver isolation for IGBT and SiC power modules, isolated A/D and D/A converter data paths, and industrial fieldbus links such as Profibus and CAN. The wide 1.8 V to 5 V logic-side range allows direct connection to microcontrollers, FPGAs, and gate drivers without additional level shifters. When designing with the ADUM140D1BRZ-RL7, observe the recommended decoupling and bypass scheme (0.1 uF plus 10 uF bulk per supply pin) and respect the maximum data rate versus load capacitance trade-off documented in the datasheet timing section. Select the appropriate fail-safe option for your system by suffix (1 = output high when input unpowered). This page synthesizes distributor pricing, drop-in alternatives in the same SOIC-16W footprint, and practical design notes that are not found in the manufacturer datasheet, providing a one-stop engineering reference for selecting the ADUM140D1BRZ-RL7 in new designs and as a drop-in for legacy ADUM1400/ADUM1401 optocoupler replacements.
ADUM1410ARWZ - 4-Channel Digital Isolator 3750Vrms | Analog Devices
The ADUM1410ARWZ is a four-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 of 25kV/µs. The device is housed in a 16-pin SOIC-W (0.295", 7.50mm width) package, suitable for space-constrained industrial and communication applications. Digital isolators are components that transfer digital signals across an isolation barrier without a direct electrical connection, using capacitive, inductive, or optical coupling. They are essential in systems where safety, noise immunity, or ground potential differences require galvanic isolation. The ADUM1410ARWZ uses monolithic air core transformers and high-speed CMOS, offering superior performance compared to optocouplers, including higher data rates, lower power consumption, and better reliability. Key features include low power operation: 1.3mA per channel maximum at 5V operation (0-2Mbps) and 0.8mA per channel at 3V operation. The device supports 3V and 5V supply levels, making it versatile for mixed-voltage systems. With 4 channels, it can isolate multiple signal lines in a single package, reducing board space and component count. The ADUM1410ARWZ is designed for general-purpose isolation, with a wide operating temperature range of -40°C to +125°C. Its 25kV/µs CMTI ensures reliable operation in noisy industrial environments, preventing data corruption from fast transients. The device is RoHS compliant and lead-free, meeting modern environmental standards. Typical applications include industrial fieldbus communication, isolated SPI/UART interfaces, motor control feedback, and power supply monitoring. The high isolation voltage and robust CMTI make it suitable for applications requiring safety isolation, such as medical equipment and grid infrastructure. When designing with the ADUM1410ARWZ, ensure proper PCB layout with adequate creepage and clearance distances to maintain isolation ratings. Bypass capacitors should be placed close to the VDD pins to minimize noise. The device does not require external components for isolation, simplifying design.
ADUM1410ARWZ-RL7 - 4-Ch Digital Isolator 3750Vrms | Analog Devices
The ADUM1410ARWZ-RL7 is a quad-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 is housed in a 16-pin SOIC-W (0.295", 7.50mm width) package, suitable for surface-mount assembly. It operates over a supply voltage range of 2.7V to 5.5V and a temperature range of -40°C to +105°C. Digital isolators are components that transfer digital signals across an isolation barrier without a direct electrical connection, using capacitive, inductive, or optical coupling. They are essential in systems where galvanic isolation is required for safety, noise immunity, or ground potential differences. The ADUM1410 uses iCoupler technology, which employs monolithic air-core transformers and high-speed CMOS, offering advantages over optocouplers such as higher data rates, lower power consumption, and better reliability. Key features of the ADUM1410ARWZ-RL7 include four independent isolation channels, a maximum data rate of 1Mbps, and a CMTI of 25kV/µs, ensuring reliable operation in noisy industrial environments. The device supports a wide supply range and features a default output state of high when the input power is not applied, which is critical for fail-safe designs. The package is a 16-lead SOIC-W, which is industry-standard and easy to integrate. Technically, the ADUM1410 uses a refresh mechanism to maintain output states during DC input, and it provides a propagation delay of approximately 100ns. The device is designed to meet UL 1577, IEC 60747-5-2, and CSA standards, ensuring compliance with international safety regulations. The isolation barrier provides reinforced insulation, making it suitable for applications requiring high isolation ratings. Typical applications include industrial fieldbus communication, motor control, power inverters, and isolated SPI/UART interfaces. The device is also used in medical equipment, where patient safety requires galvanic isolation. Its high CMTI and low propagation delay make it ideal for high-speed data acquisition systems. When designing with the ADUM1410, ensure proper PCB layout with adequate creepage and clearance distances for the isolation barrier. Place bypass capacitors close to the VDD pins, and consider the output load capacitance to maintain signal integrity. The device does not require external components for isolation, simplifying design.
ADUM1411ARWZ - Quad-Channel Digital Isolator | Analog Devices
The ADUM1411ARWZ is a quad-channel digital isolator from Analog Devices, utilizing iCoupler® technology to provide galvanic isolation up to 3750Vrms. It is housed in a 16-lead SOIC-W (wide body) package and supports data rates up to 1Mbps with a common-mode transient immunity (CMTI) of 25kV/µs. The device operates from a 2.7V to 5.5V supply on each side, making it versatile for multi-voltage systems. Digital isolators are components that transmit digital signals across an isolation barrier, preventing DC and noise from passing while allowing data to flow. They are essential in applications requiring safety isolation, ground loop breaking, and level shifting. The ADUM1411ARWZ belongs to the family of digital isolators, which are part of the broader category of interface ICs, used in industrial, medical, and communication systems. Key features include four independent isolation channels with a channel configuration of 3/1 (three forward, one reverse), a maximum data rate of 1Mbps, and a propagation delay of typically 100ns. The device offers a wide operating temperature range of -40°C to +125°C and is RoHS compliant. Its iCoupler technology replaces optocouplers, offering higher reliability, lower power consumption, and better timing accuracy. The ADUM1411ARWZ uses a proprietary magnetic isolation technique, combining high-speed CMOS and monolithic air core transformers. This architecture provides superior performance compared to optocouplers, including faster data rates, lower jitter, and no LED degradation over time. The device also features an enable pin for each side, allowing flexible control of the output states. Typical applications include industrial field bus isolation, SPI/RS-232/RS-485 isolation, motor control, and power supply isolation. Its high CMTI makes it suitable for noisy environments where fast transients are present. The wide supply range allows interfacing with both 3.3V and 5V logic. When designing with this device, 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 to ensure stable operation.
ADUM1411ARWZ-RL7 - Quad Digital Isolator 3750Vrms | Analog Devices
The ADUM1411ARWZ-RL7 is a four-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 is housed in a 16-lead SOIC wide body (SOIC-16W) package, suitable for surface-mount assembly. It operates over a wide supply voltage range and is designed for general-purpose isolation in industrial, medical, and communication systems. Digital isolators are components that transmit digital signals across an isolation barrier, preventing DC and noise from passing between two ground domains. They are essential in systems where safety, noise immunity, or ground potential differences are critical. Unlike optocouplers, which use LEDs and photodiodes, iCoupler devices use monolithic air-core transformers, offering higher speed, lower power, and better reliability. Digital isolators are a subset of isolation components, which also include isolated amplifiers and isolated power supplies. Key features of the ADUM1411ARWZ-RL7 include four independent isolation channels with a 3/1 channel directionality (three forward, one reverse), 3750Vrms isolation voltage, 1Mbps data rate, and 25kV/µs CMTI. The device operates from a 2.7V to 5.5V supply on each side, making it compatible with various logic levels. It also features low propagation delay and pulse width distortion, ensuring signal integrity in high-speed applications. The ADUM1411ARWZ-RL7 uses iCoupler technology, which integrates CMOS and monolithic air-core transformer technology. This architecture provides superior performance compared to optocouplers, including higher data rates, lower power consumption, and longer operational life. The device also includes a refresh mechanism to maintain output states when inputs are static, ensuring reliable operation in all conditions. Typical applications include industrial fieldbus isolation, medical equipment isolation, isolated SPI/UART interfaces, and power supply control. The device is particularly suited for systems requiring robust isolation with high noise immunity, such as motor drives and PLCs. Its wide supply range and high CMTI make it ideal for harsh industrial environments. When designing with this device, ensure proper PCB layout with adequate creepage and clearance distances for the isolation barrier. Place decoupling capacitors close to each supply pin, and consider the maximum data rate and CMTI requirements of your application to ensure reliable operation.
ADUM141D - Quad Digital Isolator, 150Mbps | Analog Devices
The ADUM141D is a quad-channel digital isolator from Analog Devices, based on iCoupler technology. It combines high-speed CMOS and monolithic air core transformer technology to provide outstanding performance superior to optocoupler alternatives. The device offers a 3:1 channel configuration (three forward channels and one reverse channel) with an input disable function, enabling flexible bidirectional isolation in a single package. It is available in a 16-lead SOIC package and supports data rates up to 150 Mbps, with a common-mode transient immunity (CMTI) of 75 kV/µs (for the BRWZ variant) or 100 kV/µs (for the automotive-qualified variants). The ADUM141D operates over a wide supply range of 1.8 V to 5.5 V, providing level translation across the isolation barrier, and is specified for operation from -40°C to +125°C. Digital isolators are electronic components that transmit digital signals across an isolation barrier, providing galvanic isolation to protect circuits from high voltages, ground loops, and noise. They are essential in applications where safety and signal integrity are critical, such as industrial automation, medical equipment, and communication systems. Unlike optocouplers, digital isolators offer higher speed, better timing accuracy, and longer lifespan, making them the preferred choice for modern designs. Key features of the ADUM141D include a maximum propagation delay of 13 ns and pulse width distortion of less than 3 ns at 5 V operation, ensuring precise signal transmission. The device also features fail-safe high or low output options, which define the output state when the input power is not applied or inputs are disabled, enhancing system safety. The input disable function allows the outputs to be placed in a high-impedance state, useful for multiplexing or power saving. The device is RoHS compliant and supports high-temperature operation up to 125°C, making it suitable for harsh environments. The ADUM141D uses iCoupler technology, which employs chip-scale transformer coils separated by polyimide insulation layers. This architecture ensures dc correctness in the absence of input logic transitions, a significant advantage over optocouplers that require continuous input current. The device also provides low dynamic power consumption, making it energy-efficient for battery-powered applications. Typical applications include general-purpose multichannel isolation, serial peripheral interface (SPI) isolation, data converter isolation, and industrial fieldbus communication. The high CMTI and fast data rates make it ideal for motor control, power inverters, and isolated ADC/DAC interfaces. When designing with the ADUM141D, ensure proper PCB layout with adequate creepage and clearance distances for the required isolation rating. Place decoupling capacitors close to the VDD1 and VDD2 pins to minimize noise. The input disable pins (DISABLE1 and DISABLE2) can be used to control the outputs, but must be handled carefully to avoid unintended state changes.
ADUM141D0BRWZ - 4-Ch 150Mbps Digital Isolator | Analog Devices
The ADUM141D0BRWZ is a quad-channel digital isolator from Analog Devices, based on the proprietary iCoupler technology. It provides 3.75 kV RMS isolation with a data rate of up to 150 Mbps, making it suitable for high-speed signal isolation in industrial, medical, and communication systems. The device is offered in a 16-lead SOIC-W (wide body) package, which is pin-compatible with other members of the ADuM141D family. Digital isolators are components that transfer digital signals across an isolation barrier without a direct electrical connection, using capacitive or magnetic coupling. They are essential in applications where ground potential differences, noise, or safety requirements demand galvanic isolation. The ADUM141D0BRWZ uses iCoupler technology, which combines high-speed CMOS and monolithic air core transformers to achieve superior performance compared to optocouplers, including higher data rates, lower power consumption, and better reliability. Key features of the ADUM141D0BRWZ include a 3:1 channel configuration (three forward and one reverse channel), a wide supply voltage range of 1.7V to 5.5V, and a high common-mode transient immunity (CMTI) of 75 kV/µs. The device also features a default output state of low (0) on the reverse channel, which is indicated by the '0' in the part number. The propagation delay is typically 7.2 ns, and the device operates over a temperature range of -40°C to +125°C. The ADUM141D0BRWZ is designed for general-purpose multichannel isolation, SPI/data converter isolation, and industrial field bus isolation. Its high data rate and robust isolation make it ideal for applications such as motor drives, power inverters, and medical equipment where signal integrity and safety are critical. The wide supply voltage range allows operation from both 3.3V and 5V systems, simplifying design. When designing with the ADUM141D0BRWZ, it is important to ensure proper power supply decoupling with 0.1 µF capacitors close to the VDD1 and VDD2 pins. The input and output sides are isolated, so separate ground planes are required. The device is RoHS compliant and lead-free, meeting environmental standards for modern electronic designs.
ADUM141D0BRWZ-RL7 - Quad Digital Isolator 150Mbps | Analog Devices
The ADUM141D0BRWZ-RL7 is a quad-channel digital isolator from Analog Devices, utilizing iCoupler technology to combine high-speed CMOS and monolithic air core transformer technology. It provides outstanding performance superior to optocouplers and other integrated couplers. This device offers 4 channels with a 3:1 channel directionality (three forward, one reverse), supporting data rates up to 150 Mbps. It is housed in a 16-lead SOIC-W (wide body) package with 3750 Vrms isolation rating and 75 kV/µs common-mode transient immunity (CMTI). The operating voltage range is 1.7 V to 5.5 V on both VDD1 and VDD2, making it suitable for low-voltage applications. The ADUM141D0BRWZ-RL7 is designed for robust communication in harsh environments, ensuring signal integrity across isolation barriers. A digital isolator is a device that transfers digital signals between two electrically isolated domains, preventing DC current flow while allowing AC signal transmission. It is a critical component 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 magnetic isolators. They are essential in industrial automation, medical equipment, and communication systems where signal integrity and safety are paramount. Key features of the ADUM141D0BRWZ-RL7 include its high data rate of 150 Mbps, low propagation delay, and high CMTI of 75 kV/µs, which ensures reliable operation in noisy environments. The device supports a wide supply voltage range from 1.7 V to 5.5 V, enabling compatibility with various logic levels. The 3:1 channel configuration (three forward, one reverse) is ideal for applications requiring bidirectional communication with a primary data direction. The SOIC-16 wide body package provides excellent thermal performance and is suitable for automated assembly. Technically, the ADUM141D0BRWZ-RL7 uses iCoupler technology, which integrates micro-transformers on a CMOS die, offering advantages over optocouplers such as higher speed, lower power consumption, and better reliability. The device features a robust design that ensures safe communication in harsh environments, with a wide operating temperature range of -40°C to +125°C. It is RoHS compliant and lead-free, meeting environmental standards. Typical applications include industrial fieldbus communication, isolated SPI interfaces, motor control, and power inverter systems. The high data rate and CMTI make it suitable for high-speed data acquisition and control systems. The wide supply range allows direct interface with 1.8V, 2.5V, 3.3V, and 5V logic, simplifying system design. 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 to minimize noise. The device does not require external components for isolation, but proper grounding of the two isolated grounds is essential for optimal performance.
ADUM141D1BRWZ - Quad Digital Isolator 150Mbps | Analog Devices
The ADUM141D1BRWZ is a quad-channel digital isolator from Analog Devices, based on the proprietary iCoupler technology. It provides 3.75 kV RMS isolation with a data rate of up to 150 Mbps and a common-mode transient immunity (CMTI) of 75 kV/µs. The device is housed in a 16-lead SOIC-W (wide body) package, offering a compact solution for isolating digital signals across a power barrier. A digital isolator is a component that transfers digital signals between two isolated domains, providing galvanic isolation to protect against voltage transients, ground loops, and noise. It replaces optocouplers in many applications, offering higher speed, lower power consumption, and better reliability. Digital isolators are essential in industrial automation, medical equipment, and communication systems where safety and signal integrity are critical. Key features of the ADUM141D1BRWZ include a 3:1 channel configuration (three forward channels and one reverse channel), a wide supply voltage range of 1.7V to 5.5V on both sides, and a fail-safe output state that defaults to high when the input power is absent. The device supports data rates up to 150 Mbps, making it suitable for high-speed serial interfaces such as SPI and UART. The CMTI of 75 kV/µs ensures reliable operation in noisy environments, preventing erroneous data transmission during fast voltage transients. The ADUM141D1BRWZ uses iCoupler technology, which combines high-speed CMOS and monolithic air-core transformer technology. This architecture provides superior performance compared to optocouplers, including lower power consumption, higher data rates, and better timing accuracy. The device also features a default output state that can be configured to high or low, allowing designers to choose the safe state for their application. Typical applications include industrial fieldbus communication, isolated SPI interfaces, motor control, and medical monitoring equipment. The wide supply voltage range and high data rate make it versatile for various isolation requirements. The device is also pin-compatible with other ADuM14x series isolators, enabling easy upgrades or downgrades in channel configuration. When designing with the ADUM141D1BRWZ, ensure proper PCB layout with adequate creepage and clearance distances for the isolation barrier. Place decoupling capacitors close to the VDD1 and VDD2 pins to minimize noise. The device is RoHS compliant and suitable for surface-mount assembly.
ADUM141D2BRWZ - Quad Digital Isolator, 150Mbps | Analog Devices
The ADUM141D2BRWZ is a quad-channel digital isolator from Analog Devices, based on the proprietary iCoupler® technology. It provides 3.75 kV RMS isolation with a data rate of 150 Mbps and a common-mode transient immunity (CMTI) of 75 kV/µs. The device is housed in a 16-lead SOIC package with 7.50 mm width (SOIC-16W), suitable for high-speed signal isolation in industrial and communication systems. A digital isolator is a component that transfers digital signals across an isolation barrier, providing galvanic isolation to protect circuits from high voltages, ground loops, and noise. It replaces optocouplers in many applications, offering higher speed, lower power consumption, and better reliability. Digital isolators are essential in systems where safety and signal integrity are critical, such as in motor drives, power converters, and medical equipment. Key features of the ADUM141D2BRWZ include a channel configuration of 3 forward and 1 reverse (3:1), input disable function, and a default output state of high (as indicated by the '2' in the part number). The device operates over a supply voltage range of 3.0 V to 5.5 V on both sides, with a maximum propagation delay of [DATA_NEEDED: propagation delay] ns. It is rated for industrial temperature range from -40°C to +125°C, making it suitable for harsh environments. The ADUM141D2BRWZ uses iCoupler technology, which combines high-speed CMOS and monolithic air core transformers to achieve superior performance compared to optocouplers. This technology provides precise timing, low power consumption, and high reliability. The device also features a refresh mechanism to ensure output stability even when the input is static, and it supports a wide data rate range from DC to 150 Mbps. Typical applications include industrial fieldbus communication, isolated SPI interfaces, motor control, and power supply isolation. The high CMTI of 75 kV/µs ensures reliable operation in noisy environments, such as those with fast-switching power transistors. The 3:1 channel configuration is ideal for applications requiring three forward channels and one reverse channel, such as isolated SPI with a slave-select line. When designing with the ADUM141D2BRWZ, ensure proper decoupling capacitors (0.1 µF) are placed close to each VDD pin. The input disable function can be used to force the output to a defined state, which is useful for system reset or fault conditions. Also, consider the propagation delay and pulse width distortion when designing high-speed communication links.
ADUM141E1BRZ-RL7 - 4-Ch 150Mbps Digital Isolator | Analog Devices
The Analog Devices ADUM141E1BRZ-RL7 is a quad-channel digital isolator based on iCoupler technology, delivering 150 Mbps data rate, 3000 Vrms isolation, and 75 kV/us minimum common-mode transient immunity (CMTI) in a 16-pin SOIC-N (RW-16) wide-body surface-mount package. It uses monolithic air-core transformer technology combined with high-speed CMOS, providing four independent isolation channels in a 3:1 channel-direction configuration (three forward, one reverse). A digital isolator is an integrated circuit that transfers data across an isolation barrier (typically several kilovolts) using semiconductor-based techniques rather than optical coupling. In the broader component hierarchy, digital isolators belong to the signal-isolation family, sitting between optocouplers (older LED/photodiode technology) and modern magnetic or capacitive isolators. They are critical safety and signal-integrity components in any system where low-voltage logic must communicate with high-voltage or noise-isolated domains, such as industrial fieldbus, motor drives, and medical patient-connected electronics. Key features include 3.0 kVrms / 3.75 kVrms reinforced isolation per UL 1577, 150 Mbps guaranteed data rate, 75 kV/us CMTI minimum, 4.5 ns typical pulse-width distortion, 2 ns channel-to-chip jitter, and 1.7 V to 5.5 V supply on both primary and secondary chip electronics. The SOIC-16W form is 7.5 mm wide, which is the package family optioned to HI-installation thickness for the soldering process. ADUM141E is a higher-performance-grade option of iCoupler technology recommended over older ADUM1410/1411/1412/1414 families when designers need higher CMTI and tighter jitter. Typical applications include isolated SPI/UART between an MCU and a high-side gate driver in motor drives, isolated digital feedback in a solar inverter, isolated RS-485 bus nodes, and isolated data acquisition in a medical patient monitor. The wide input voltage (3.0V to 5.5V on both sides) covers standard logic rails, and the high CMTI permits routing through fast-switching power stages without false triggering. The ADUM141E series was specifically designed to directly replace the ADUM1410/1411/1412/1414 in most designs. When designing with this part, ensure the VDD1 and VDD2 supplies are properly bypassed with 0.1 uF capacitors placed within 2 mm of the supply pins. Note that the input pins on either chip side have internal weak pull-down; if your driving source is open-drain, an external pull-up of 10 kohm to the corresponding VDD is required. The R suffix in the part number indicates tape and reel packaging for high-volume assembly. This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving the design engineer a single reference for selecting and qualifying ADUM141E1BRZ-RL7 in safety-critical isolation paths.
ADUM141E1WBRWZ-RL - 150Mbps Quad Digital Isolator | Analog Devices
The Analog Devices ADUM141E1WBRWZ-RL is a quad-channel digital isolator based on Analog Devices iCoupler technology, delivering 150 Mbps data rate across 3750 Vrms isolation in a 16-pin wide-body SOIC (RW-16) package. The device combines high-speed CMOS and monolithic air-core transformer technology to provide superior performance characteristics compared with optocouplers and other integrated couplers, including lower power consumption, tighter channel-to-channel matching, and deterministic propagation delay. A digital isolator is a semiconductor device that transfers digital signals across an isolation barrier using chip-scale transformers rather than optical coupling. Digital isolators are categorized under interface ICs and signal isolation components. They replace legacy optocouplers in applications requiring galvanic isolation, providing better CMTI (common-mode transient immunity), longer lifetimes, and lower propagation delay. The ADuM141E family uses 4 channels in a 3:1 channel-direction configuration (3 forward, 1 reverse), with each channel independently isolated by an on-chip transformer. Key features of the ADuM141E include 150Mbps maximum data rate, 75 kV/µs minimum common-mode transient immunity (CMTI), 3.0 kVrms/3.75 kVrms reinforced isolation per UL 1577, and 5 kVrms surge withstand capability. The device operates from 1.7 V to 5.5 V on both sides of the barrier, supports hot-swappable logic levels, and integrates refresh circuits to maintain DC correctness even at zero input. Typical quiescent current is below 1 mA per channel at 1 Mbps, and the default output is high when input supply is missing. Typical applications include industrial fieldbus isolation (RS-485, CAN, SPI, I2C), isolated gate drivers for IGBT and SiC MOSFETs, USB and HDMI signal isolation, isolated ADC/DAC interfaces, and medical device safety isolation. The wide-body SOIC package provides 8 mm creepage/clearance, satisfying reinforced insulation requirements for 230 V AC mains-referenced systems. When designing with the ADuM141E1, place 0.1 µF bypass capacitors close to each VDD1 and VDD2 pin to decouple high-frequency noise. The device is pin-compatible with the older ADuM1410/1411/1412 families in the same RW-16 footprint, allowing direct drop-in upgrades for higher speed and stronger isolation. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design considerations for the ADuM141E1WBRWZ-RL not found on any single distributor product page.
ADUM1420ARWZ - Quad-Channel Digital Isolator | Analog Devices
The ADUM1420ARWZ is a quad-channel digital isolator from Analog Devices, based on iCoupler technology. It provides 4 channels of isolation with 2500Vrms isolation rating, supporting data rates up to 10 Mbps. The device operates from a 3V to 5.5V supply and is available in a 16-lead SOIC package (0.295" width). It features low power consumption, with 1.0 mA per channel at 0-2 Mbps and 3.5 mA per channel at 10 Mbps for 5V operation. The ADUM1420ARWZ is designed for general-purpose isolation in industrial, medical, and communication systems, offering superior performance compared to optocouplers by eliminating LED and photodiode aging effects. Digital isolators are components that provide electrical isolation between two circuits while allowing digital signals to pass. They are essential in applications where ground potential differences, noise, or safety requirements demand galvanic isolation. The ADUM1420ARWZ uses iCoupler technology, which combines high-speed CMOS and monolithic air core transformers to achieve reliable isolation without the wear-out mechanisms of optocouplers. This makes it a preferred choice for high-reliability systems. Key features include 4/0 channel directionality (all inputs on one side, all outputs on the other), 25kV/µs common-mode transient immunity (CMTI), and a wide operating temperature range of -40°C to +105°C. The device supports both 3V and 5V supplies, making it versatile for mixed-voltage systems. Its low power consumption is critical for power-sensitive designs. The ADUM1420ARWZ is part of the ADuM140x family, which includes variants with different channel configurations and data rates. The 'A' grade indicates a 10 Mbps data rate, while 'B' and 'C' grades offer 25 Mbps and 90 Mbps respectively. The 'RWZ' suffix denotes the 16-lead SOIC package with a 7.50mm body width. Typical applications include industrial fieldbus isolation, medical equipment isolation, isolated SPI/UART interfaces, and power supply control. The device is also suitable for automotive and aerospace systems where reliability and isolation are paramount. When designing with the ADUM1420ARWZ, ensure proper PCB layout with adequate creepage and clearance distances for the required isolation rating. Bypass capacitors should be placed close to the VDD pins to minimize noise. The device does not require external components for isolation, simplifying design.
ADUM1420ARWZ-RL7 - Quad Digital Isolator 2500Vrms | Analog Devices
The ADUM1420ARWZ-RL7 is a quad-channel digital isolator from Analog Devices, based on iCoupler technology. It provides galvanic isolation up to 2500Vrms, with a data rate of 1Mbps and common-mode transient immunity of 25kV/µs. The device is housed in a 16-lead SOIC-W package (0.295" width) and is available in tape and reel packaging (RL7). Digital isolators are components that transfer digital signals across an isolation barrier, preventing DC current flow while allowing AC signals to pass. They are essential in applications requiring safety isolation, ground loop elimination, and level shifting. The ADUM1420 uses monolithic air core transformers and CMOS technology, offering superior performance compared to optocouplers, including higher speed, lower power, and better reliability. Key features include four independent isolation channels, a wide supply voltage range of 3.0V to 5.5V, and a maximum data rate of 1Mbps. The device operates over the industrial temperature range of -40°C to +125°C. Its high common-mode transient immunity of 25kV/µs ensures reliable operation in noisy environments. The ADUM1420's architecture uses iCoupler technology, which integrates micro-transformers on a CMOS die, eliminating the need for LEDs and photodiodes. This results in lower power consumption, higher data rates, and longer lifespan compared to optocouplers. The device also features a default output state that is high when the input power is off, ensuring fail-safe operation. Typical applications include industrial field bus isolation, SPI isolation, RS-232/RS-485 isolation, and general-purpose digital isolation in motor drives, power inverters, and medical equipment. The wide supply range and robust isolation make it suitable for both 3.3V and 5V systems. When designing with the ADUM1420, ensure proper PCB layout with adequate creepage and clearance distances for the isolation barrier. Bypass capacitors should be placed close to the VDD pins to minimize noise. The device is RoHS compliant and lead-free.
ADUM1421ARWZ - Quad-Channel Digital Isolator | Analog Devices
The ADUM1421ARWZ is a quad-channel digital isolator from Analog Devices, based on iCoupler technology. It provides four independent isolation channels with a channel configuration of 2/2 (two forward, two reverse), supporting data rates up to 1 Mbps. 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 package (0.295" width, 7.50 mm body) and provides 2500 Vrms isolation rating with a common-mode transient immunity (CMTI) of 25 kV/µs. 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. The ADUM1421ARWZ uses Analog Devices' iCoupler technology, which employs monolithic air core transformers to couple signals, offering advantages over optocouplers such as higher data rates, lower power consumption, and better reliability. Digital isolators are essential in systems where galvanic isolation is required for safety, noise immunity, or ground potential differences, such as in industrial automation, medical equipment, and communication interfaces. Key features of the ADUM1421ARWZ include its 2/2 channel configuration (two channels forward, two reverse), 1 Mbps data rate, and 25 kV/µs CMTI. The device supports a wide supply range of 2.7 V to 5.5 V on both VDD1 and VDD2, allowing use in low-voltage systems and enabling level shifting. The isolation barrier provides 2500 Vrms isolation, suitable for many industrial and medical applications. The SOIC-16 package is widely used and easy to integrate into PCB designs. Technically, the ADUM1421ARWZ uses iCoupler technology, which combines high-speed CMOS and monolithic air core transformers. This architecture avoids the LED and photodiode aging issues of optocouplers, providing more stable performance over time and temperature. The device has a propagation delay of approximately 100 ns and a pulse width distortion of 40 ns, ensuring accurate signal transmission. The CMTI of 25 kV/µs ensures reliable operation in noisy environments, preventing false triggering due to fast voltage transients across the isolation barrier. Typical applications include industrial field bus isolation, motor control, power supply isolation, and isolated SPI or UART interfaces. The ADUM1421ARWZ is also suitable for medical equipment requiring patient isolation, and for communication interfaces where ground loops must be avoided. Its low power consumption and small package make it ideal for space-constrained designs. When designing with the ADUM1421ARWZ, ensure proper decoupling capacitors (0.1 µF) are placed close to each VDD pin. The supply voltage on each side must be within the specified range, and the output load capacitance should be limited to avoid excessive propagation delay. For high-voltage isolation, maintain adequate creepage and clearance distances on the PCB.
ADUM1421ARWZ-RL7 - 4-Ch Digital Isolator 3750Vrms | Analog Devices
The ADUM1421ARWZ-RL7 is a micropower, 4-channel digital isolator from Analog Devices, based on iCoupler technology. It provides 3750Vrms isolation with a data rate of 2Mbps and a common-mode transient immunity of 25kV/us. The device is available in a 20-lead SOIC-W package and operates over the industrial temperature range of -40C to +125C. Digital isolators are components that transfer digital signals across an isolation barrier, providing galvanic isolation to protect circuits and users from high voltages, ground loops, and noise. They are essential in industrial automation, medical equipment, and communication systems where safety and signal integrity are critical. The ADUM1421ARWZ-RL7 uses iCoupler technology, which combines high-speed CMOS and monolithic air core transformers, offering superior performance compared to optocouplers in terms of speed, power consumption, and reliability. Key features include a wide supply voltage range of 3.0V to 5.5V, low power consumption (typical 1.8mA per channel at 2Mbps), and a high data rate of 2Mbps. The device also features a 25kV/us common-mode transient immunity, ensuring reliable operation in noisy environments. The 4-channel configuration with a 3/1 channel directionality (three forward, one reverse) makes it suitable for SPI and other serial interfaces. The ADUM1421ARWZ-RL7 is designed with a propagation delay of 100ns typical and a pulse width distortion of 10ns, ensuring accurate signal transmission. The device is RoHS compliant and lead-free, meeting environmental standards. Its robust design includes thermal shutdown protection and a wide operating temperature range, making it suitable for harsh industrial environments. Typical applications include industrial fieldbus communication, isolated SPI interfaces, motor control, and power supply monitoring. The device is also used in medical equipment where patient safety requires galvanic isolation. Its low power consumption makes it ideal for battery-powered and energy-efficient designs. 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 to minimize noise. The device is available in tape and reel packaging with a standard quantity of 1000 units.
ADUM1440ARWZ - Quad-Channel Digital Isolator | Analog Devices
The ADUM1440ARWZ is a quad-channel digital isolator from Analog Devices, based on iCoupler technology. It provides 4/0 channel directionality, meaning all four channels are forward-direction, and is housed in a 16-lead SOIC-W package. The device offers 2500 Vrms isolation voltage, a data rate of 1 Mbps, and a common-mode transient immunity (CMTI) of 25 kV/µs. It operates from a 3.3V or 5V supply and is designed for general-purpose isolation in industrial, medical, and communication systems. 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. Unlike optocouplers, which use LEDs and photodiodes, iCoupler devices use monolithic air-core transformers and high-speed CMOS, offering superior performance in terms of speed, power consumption, and reliability. The ADUM1440 is part of the ADuM140x family, which includes variants with different channel configurations and data rates. Key features of the ADUM1440ARWZ include low power operation: at 5V, it consumes 1.0 mA per channel max at 0-2 Mbps, 3.5 mA per channel at 10 Mbps, and 31 mA per channel at 100 Mbps. At 3V, the power consumption is even lower. The device supports a wide operating temperature range of -40°C to +105°C, making it suitable for harsh environments. It is RoHS compliant and available in a standard SOIC-16 package. The ADUM1440 uses iCoupler technology, which integrates micro-transformers on a single chip, eliminating the need for external components and providing high reliability. The isolation barrier is rated for 2500 Vrms, and the device offers high CMTI of 25 kV/µs, ensuring robust operation in noisy industrial environments. The 1 Mbps data rate is sufficient for many control and monitoring applications, and the low power consumption makes it ideal for battery-powered or power-sensitive designs. Typical applications include industrial field bus isolation, motor control, power supply monitoring, and medical equipment. The ADUM1440 is also used in communication interfaces, such as RS-485 and CAN, where galvanic isolation is required. Its small package and low power make it a versatile choice for space-constrained designs. When designing with the ADUM1440, ensure proper PCB layout to maintain isolation spacing and minimize parasitic capacitance. The device requires a bypass capacitor on each supply pin, and the ground planes should be separated to preserve the isolation barrier. For higher data rates, consider the ADUM1400 series with 10 Mbps or 100 Mbps options.
ADUM1440ARWZ-RL7 - 4-Ch Digital Isolator 2Mbps | Analog Devices
The ADUM1440ARWZ-RL7 is a micropower, quad-channel digital isolator from Analog Devices, based on the iCoupler technology. It provides 4/0 channel directionality with a default high output state, and is designed for low-power applications where isolation is required. The device operates from a 2.25V to 3.6V supply on each side, with a data rate of 2 Mbps and a CMTI of 25 kV/µs. It is available in a 16-lead SOIC-W package, offering 2500 Vrms isolation. A digital isolator is a component that transfers digital signals across an isolation barrier, providing galvanic isolation to protect circuits and users from high voltages, ground loops, and noise. It is a key element in industrial, medical, and communication systems where safety and signal integrity are critical. Digital isolators are part of the broader category of isolation components, which also include optocouplers and magnetic isolators. Key features of the ADUM1440ARWZ-RL7 include its micropower consumption, with a typical supply current of 0.6 mA per channel at 2 Mbps, making it ideal for battery-powered and energy-harvesting applications. The device also features a default high output state, which ensures a defined output during power-up or when the input is unpowered, enhancing system safety. The iCoupler technology provides superior performance compared to optocouplers, including higher data rates, lower power, and better reliability. Technically, the ADUM1440ARWZ-RL7 uses monolithic air core transformers to couple signals across the isolation barrier, combined with CMOS logic for signal processing. This architecture enables high-speed operation with low propagation delay and excellent timing accuracy. The device is specified over the industrial temperature range of -40°C to +125°C, making it suitable for harsh environments. Typical applications include industrial fieldbus communication, isolated SPI interfaces, medical patient monitoring, and power supply control. The low power consumption and small package make it ideal for space-constrained designs. When designing with this device, ensure proper PCB layout with adequate creepage and clearance distances to maintain the isolation rating. Also, decouple each supply pin with a 0.1 µF capacitor close to the device.
ADUM1441ARWZ - Micro-Power Quad Digital Isolator | Analog Devices
The ADUM1441ARWZ is a micro-power, 4-channel digital isolator from Analog Devices, utilizing the iCoupler technology that combines high-speed CMOS and monolithic air core transformer technology. It provides outstanding performance characteristics superior to alternatives, with a data rate of 2 Mbps and a withstand voltage of 2500 Vrms. The device operates over a supply voltage range of 3.0 V to 3.6 V on both VDD1 and VDD2, and is specified over the temperature range of -40°C to +125°C. It is available in a 16-lead SOIC-W package (ADUM1441ARWZ) and also in a 16-lead QSOP package (ADUM1441ARQZ). A digital isolator is a component that provides galvanic isolation between two circuits while allowing digital signals to pass across the isolation barrier. It is essential in applications where ground potential differences, noise, or safety requirements necessitate isolation, such as in industrial automation, medical equipment, and communication systems. Digital isolators replace optocouplers in many designs due to their higher speed, lower power consumption, and better reliability. Key features of the ADUM1441ARWZ include ultra-low power consumption: in standard operating mode with internal refresh enabled (ENx = 0), the current per channel is less than 10 μA; with internal refresh disabled (ENx = 1), it drops to less than 1 μA. This makes it ideal for battery-powered and energy-harvesting applications. The device also features a common-mode transient immunity (CMTI) of 25 kV/µs, ensuring reliable operation in noisy environments. The ADUM1441ARWZ uses a refresh mechanism to maintain output states when the input is static, which is a key differentiator from older isolators. The internal refresh can be disabled via the ENx pins to further reduce power consumption, but this requires the input to be toggled periodically to maintain the output state. This architecture allows for extremely low quiescent current, making it one of the most power-efficient digital isolators available. Typical applications include SPI, I2C, and UART isolation in industrial field buses, isolated sensor interfaces, and power supply control loops. The low power consumption and small package make it suitable for space-constrained designs. When designing with this device, ensure that the ENx pins are configured correctly to achieve the desired power-performance trade-off, and consider the need for periodic signal toggling when internal refresh is disabled.
ADUM1442ARWZ - Micropower Quad-Channel Digital Isolator | Analog Devices
The ADUM1442ARWZ is a micropower, quad-channel digital isolator from Analog Devices, based on the iCoupler technology that combines high-speed CMOS and monolithic air core transformer technologies. It provides outstanding performance characteristics superior to alternative isolation solutions. This device operates over a supply voltage range of 3.0 V to 3.6 V on both sides (VDD1 and VDD2), with a recommended operating temperature range of -40°C to +125°C. The ADUM1442ARWZ is available in a 16-lead SOIC-W package, offering 4 isolation channels with a data rate of 2 Mbps and a common-mode transient immunity (CMTI) of 25 kV/µs. Digital isolators are essential components in systems requiring galvanic isolation between different ground domains, protecting sensitive electronics from high-voltage transients and ground loops. They are widely used in industrial automation, medical equipment, and communication interfaces. The ADUM1442ARWZ is specifically designed for low-power applications, with a typical quiescent current of less than 10 µA per channel when internal refresh is enabled (ENx = 0), and less than 1 µA per channel when internal refresh is disabled (ENx = 1). This makes it ideal for battery-powered and energy-harvesting systems where power consumption is critical. Key features of the ADUM1442ARWZ include its micropower operation, high CMTI of 25 kV/µs, and a wide operating temperature range. The device supports a data rate of 2 Mbps, suitable for slow serial communication interfaces like SPI and I2C. The isolation voltage rating is 2500 Vrms for the ARWZ variant, which is sufficient for many industrial and medical applications. The device also features an enable pin (ENx) for each channel pair, allowing the user to disable the internal refresh oscillator to further reduce power consumption. In terms of technical depth, the ADUM1442ARWZ uses iCoupler technology, which integrates micro-transformers on a CMOS die, providing reliable isolation without the need for external components. The device is fully specified over the entire operating range, ensuring consistent performance across temperature and supply variations. The propagation delay is typically 100 ns, and the pulse width distortion is minimal, making it suitable for precise timing applications. Typical applications for the ADUM1442ARWZ include isolated SPI interfaces, industrial fieldbus communication, medical patient monitoring, and battery management systems. Its low power consumption and high CMTI make it particularly well-suited for applications where noise immunity and power efficiency are paramount. When designing with this device, it is important to ensure proper decoupling of the power supply pins with 0.1 µF capacitors placed close to the device. Additionally, the enable pins should be configured according to the desired power-saving mode, and the input/output logic levels should be compatible with the connected circuitry.
ADUM1442ARWZ-RL7 - Micropower Quad Digital Isolator | Analog Devices
The ADUM1442ARWZ-RL7 is a micropower, 4-channel digital isolator from Analog Devices, based on the iCoupler technology that combines high-speed CMOS and monolithic air core transformer technology. It provides outstanding performance characteristics superior to alternative isolation solutions, offering 2 Mbps data rate, 25 kV/µs common-mode transient immunity (CMTI), and a wide operating temperature range of -40°C to +125°C. The device is available in a 20-lead SOIC-W (RW-20) package, providing 3750 Vrms isolation rating, making it suitable for a variety of industrial and instrumentation applications. A digital isolator is a component that provides galvanic isolation between two circuits while allowing digital signals to pass across the isolation barrier. It is essential in applications where ground potential differences, noise, or safety requirements demand electrical separation. Digital isolators are part of the broader category of isolation components, which also include optocouplers and magnetic isolators. The ADUM1442ARWZ-RL7 uses iCoupler technology, which employs micro-transformers to transfer data across the isolation barrier, offering advantages such as higher speed, lower power consumption, and better reliability compared to optocouplers. Key features of the ADUM1442ARWZ-RL7 include its micropower operation, with a typical supply current of 0.6 mA per channel at 3.3 V, making it ideal for power-sensitive applications. It supports a wide supply voltage range of 3.0 V to 3.6 V on both sides, and offers a data rate of 2 Mbps. The device provides 4 isolation channels with a channel configuration of 2/2 (two forward and two reverse), and features a default output state of high. It also includes an enable function on each side, allowing the outputs to be placed in a high-impedance state. Technically, the ADUM1442ARWZ-RL7 is designed with a refresh mechanism that ensures the output state is maintained even when the input is not toggling, preventing data corruption. The device has a propagation delay of 23 ns typical, and a pulse width distortion of 3 ns. It is certified to UL1577, IEC 60747-5-5 (VDE 0884-10), and CSA standards, ensuring robust isolation performance. The device is also RoHS compliant and lead-free. Typical applications for the ADUM1442ARWZ-RL7 include industrial field bus isolation, SPI isolation, RS-232/RS-485 isolation, and general-purpose digital isolation in systems where low power consumption is critical. Its micropower operation makes it particularly suitable for battery-powered or energy-harvesting applications. When designing with this device, it is important to ensure proper PCB layout to maintain the isolation barrier's integrity. Keep the isolation gap clear of copper and components, and place decoupling capacitors close to the supply pins. Also, consider the CMTI requirement of 25 kV/µs to avoid false triggering in noisy environments.
ADUM1445ARWZ - Micropower Quad Digital Isolator | Analog Devices
The ADUM1445ARWZ is a micropower, quad-channel digital isolator from Analog Devices, utilizing the iCoupler technology to provide galvanic isolation up to 2500 Vrms. It features a default low output and 4/1 directionality, meaning four channels are forward (input to output) and one channel is reverse (output to input). The device operates over a supply voltage range of 3.0 V to 3.6 V on both VDD1 and VDD2, with a maximum data rate of 2 Mbps and a common-mode transient immunity (CMTI) of 25 kV/µs. The ADUM1445ARWZ is available in a 16-lead SOIC-W package, which is wider than the standard SOIC-16, providing enhanced creepage and clearance for high-voltage isolation applications. Digital isolators are essential components in systems that require signal transfer across an isolation barrier to protect low-voltage circuitry from high-voltage transients, ground loops, or noise. They are commonly used in industrial automation, medical equipment, and communication interfaces where safety and signal integrity are paramount. The ADUM1445ARWZ belongs to the family of digital isolators, which are part of the broader category of interface ICs, and specifically to the micropower segment that minimizes power consumption for battery-powered or energy-efficient designs. Key features of the ADUM1445ARWZ include its ultra-low power consumption: in standard operating mode with internal refresh enabled (ENx = 0), the current per channel is less than 10 µA, and with internal refresh disabled (ENx = 1), it drops to less than 1 µA. This makes it ideal for power-sensitive applications. The device also offers a wide operating temperature range of -40°C to +125°C, ensuring reliability in harsh environments. The 2500 Vrms isolation rating provides robust protection against voltage spikes and ground potential differences. Technically, the ADUM1445ARWZ uses Analog Devices' iCoupler technology, which combines high-speed CMOS and monolithic air core transformers to achieve isolation without the need for external components. The device supports a 2 Mbps data rate, which is sufficient for many control and monitoring applications. The CMTI of 25 kV/µs ensures that the isolator can reject fast transients, making it suitable for noisy industrial environments. The default low output state ensures that if the input power is lost, the output defaults to a known safe state, which is critical for fail-safe designs. Typical applications for the ADUM1445ARWZ include industrial fieldbus communication, isolated SPI interfaces, and general-purpose signal isolation in motor drives, power inverters, and medical monitoring equipment. Its low power consumption makes it particularly well-suited for battery-operated instruments and portable devices where every microamp counts. When designing with the ADUM1445ARWZ, it is important to ensure proper decoupling of the VDD1 and VDD2 supplies with 0.1 µF capacitors placed close to the pins. Additionally, the ENx pins can be used to disable the internal refresh, further reducing power consumption in applications where the data rate is low and the input signals are static. Care should be taken to maintain the recommended operating conditions to ensure reliable isolation performance.
ADUM1445ARWZ-RL7 - 4-Ch Digital Isolator | Analog Devices
The ADUM1445ARWZ-RL7 is a micropower, quad-channel digital isolator from Analog Devices, based on the iCoupler technology. It provides 4 isolation channels with a default low output and a 4/1 directionality configuration, meaning four channels are forward (input to output) and one channel is reverse (output to input). The device is designed for low-power applications, consuming significantly less power than traditional optocouplers while offering superior performance in terms of speed, reliability, and integration. A digital isolator is a component that provides electrical isolation between two circuits while allowing digital signals to pass across the isolation barrier. It is essential in applications where ground potential differences, noise, or safety requirements necessitate galvanic isolation. Digital isolators are part of the broader category of isolation components, which also includes optocouplers and magnetic isolators. They are widely used in industrial automation, medical equipment, and communication systems to protect sensitive electronics and ensure signal integrity. Key features of the ADUM1445ARWZ-RL7 include a data rate of 2 Mbps, a common-mode transient immunity (CMTI) of 25 kV/µs, and an isolation voltage rating of 3750 Vrms. The device operates over a supply voltage range of 3.0 V to 3.6 V on both sides, with a typical quiescent current of 0.6 mA per channel. It is available in a 20-lead SOIC-W package, which is suitable for space-constrained designs. The ADUM1445ARWZ-RL7 utilizes iCoupler technology, which combines high-speed CMOS and monolithic air core transformer technology. This architecture provides outstanding performance characteristics, including low power consumption, high data rates, and reliable isolation. The device also features a default low output state, ensuring that the output is in a known state when the input power is not applied. Typical applications for the ADUM1445ARWZ-RL7 include industrial field bus isolation, SPI isolation, and general-purpose signal isolation in systems where low power consumption is critical. Its low power consumption makes it ideal for battery-powered or energy-harvesting applications, while its high CMTI ensures reliable operation in noisy industrial environments. When designing with this device, it is important to ensure proper power supply decoupling on both sides of the isolation barrier. Use 0.1 µF ceramic capacitors close to the VDD1 and VDD2 pins to minimize noise and ensure stable operation. Additionally, consider the directionality configuration to ensure correct signal routing.