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ADUM3154BRSZ-RL7 - SPI Digital Isolator 3750Vrms | Analog Devices
The ADUM3154BRSZ-RL7 is a 3.75 kV, 7-channel SPIsolator digital isolator from Analog Devices, optimized for serial peripheral interface (SPI) applications. It supports up to four subordinate devices and is based on the iCoupler chip-scale transformer technology. The device provides low propagation delay and jitter in the CLK, MO/SI, MI/SO, and SS SPI bus signals, supporting SPI clock rates up to 17 MHz. It is available in a 20-lead SSOP package (0.209", 5.30mm width) and operates over a temperature range of -40°C to +125°C. 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 used to protect sensitive electronics from high voltages, ground loops, and noise, and is essential 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 includes optocouplers and magnetic isolators. Key features of the ADUM3154BRSZ-RL7 include a 3750Vrms isolation rating, 4 forward channels and 3 reverse channels, a data rate of 34 Mbps, and a common-mode transient immunity (CMTI) of 25 kV/µs. The device operates with a supply voltage range of 3.0V to 3.6V on VDD1 and 4.5V to 5.5V on VDD2, ensuring compatibility with standard logic levels. The low propagation delay and jitter make it ideal for high-speed SPI communication. The ADUM3154BRSZ-RL7 uses iCoupler technology, which employs chip-scale transformers to transmit data across the isolation barrier. This technology offers advantages over optocouplers, including higher data rates, lower power consumption, and better reliability. The device also features a multiple-slave SPI configuration, allowing it to interface with up to four SPI slave devices without additional components. Typical applications include isolated SPI interfaces in industrial automation, motor control, data acquisition systems, and medical equipment. The device is also suitable for use in communication systems where galvanic isolation is required to protect against voltage transients and ground potential differences. When designing with this device, it is important to ensure proper PCB layout to minimize coupling across the isolation barrier. The datasheet recommends that any coupling that occurs should affect all pins equally on a given component side to prevent voltage differentials that could exceed absolute maximum ratings.
ADUM3155BRSZ - 7-Channel SPI Digital Isolator | Analog Devices
The ADUM3155BRSZ is a 7-channel, SPIsolator digital isolator from Analog Devices, optimized for isolated serial peripheral interfaces (SPIs). It is based on the iCoupler chip-scale transformer technology, providing 3.75 kVrms isolation with a 25 kV/µs common-mode transient immunity (CMTI). The device supports SPI clock rates up to 17 MHz with a low propagation delay of 14 ns, making it ideal for high-speed isolated data acquisition and control systems. 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 separation between the controller and the peripheral. Digital isolators are part of the broader category of isolation components, which also include optocouplers and magnetic isolators, and are widely used in industrial automation, medical equipment, and power electronics. The ADUM3155BRSZ features seven channels with a specific configuration: three forward channels (CLK, MO/SI, SS) and two reverse channels (MI/SO), plus two additional channels for general-purpose use. It operates from a 3.0V to 5.5V supply on both sides, with a maximum data rate of 34 Mbps. The device is available in a 20-lead SSOP package (0.209" width, 5.30mm) and is specified for the industrial temperature range of -40°C to +125°C. Key features include a 3.75 kVrms isolation voltage, 25 kV/µs CMTI, 14 ns propagation delay, and 34 Mbps data rate. The device also offers a 2.5V to 5.5V logic supply range, making it compatible with a wide variety of microcontrollers and FPGAs. The iCoupler technology ensures reliable operation in harsh environments, with no wear-out mechanism, unlike optocouplers. Typical applications include isolated SPI interfaces in industrial motor drives, isolated sensor data acquisition, isolated ADC/DAC interfaces, and isolated communication in medical and instrumentation systems. The high CMTI and low propagation delay make it suitable for high-speed, noise-prone environments. When designing with the ADUM3155BRSZ, ensure proper power supply decoupling on both sides with 0.1 µF capacitors close to the VDD pins. The input and output sides must have separate ground planes to maintain isolation integrity. The device is RoHS compliant and lead-free.
ADUM3155BRSZ-RL7 - 7-Channel SPI Isolator 3750Vrms | Analog Devices
The ADUM3155BRSZ-RL7 is a 7-channel, SPIsolator digital isolator from Analog Devices, optimized for isolated serial peripheral interfaces (SPIs). It provides 3750 Vrms isolation with a maximum data rate of 34 Mbps and a common-mode transient immunity (CMTI) of 25 kV/µs. The device is housed in a 20-lead SSOP package (0.209" width, 5.30 mm) and operates over the industrial temperature range of -40°C to +125°C. 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 demand galvanic isolation. The ADUM3155BRSZ-RL7 uses Analog Devices' iCoupler chip-scale transformer technology, which offers superior performance compared to optocouplers, including higher data rates, lower power consumption, and better reliability. Key features include a 34 Mbps data rate, 14 ns propagation delay, and 25 kV/µs CMTI, making it suitable for high-speed SPI communication in noisy industrial environments. The device supports 5 V operation on both sides (VDD1 and VDD2) and is available in a tape-and-reel package (RL7 suffix) for automated assembly. The ADUM3155BRSZ-RL7 is part of the ADuM315x family, which includes ADuM3151, ADuM3152, and ADuM3153 variants. These devices are designed to isolate SPI buses, providing low propagation delay and high data integrity. The iCoupler technology integrates micro-transformers and high-speed CMOS circuits, ensuring robust isolation and signal integrity. Typical applications include isolated SPI interfaces in industrial automation, motor control, data acquisition systems, and medical equipment. The device is also used in isolated power supplies and communication interfaces where ground loop isolation is critical. When designing with this device, ensure proper PCB layout to maintain isolation spacing and minimize parasitic capacitance. The SSOP package requires careful soldering to avoid thermal stress. For high-speed operation, keep traces short and use proper termination to maintain signal integrity.
ADUM3160BRWZ - USB Digital Isolator 2.5kV, 12Mbps | Analog Devices
Analog Devices ADuM3160BRWZ is a USB port isolator built on iCoupler technology, providing 2500 Vrms galvanic isolation for full-speed and low-speed USB signals. It supports data rates up to 12 Mbps and offers 25 kV/µs common-mode transient immunity (CMTI) in a 16-SOIC (7.50 mm wide) package. A digital isolator is a component that transfers digital signals between circuits while preventing DC current flow and allowing different ground potentials. A USB digital isolator specifically isolates the D+ and D− lines of a USB port so that a host and peripheral can communicate without sharing a ground, eliminating ground loops and protecting against voltage transients. This type of component sits between the USB controller and the connector in the signal chain, preserving USB protocol behavior. Key features include 2500 Vrms isolation rating, 12 Mbps data rate, 25 kV/µs CMTI, and support for full-speed and low-speed USB devices. The monolithic air core transformer technology rejects high-speed common-mode noise better than optocouplers and provides stable performance over temperature. The wide SOIC-16 package allows easy PCB routing and is suitable for space-constrained boards. Architecturally, the ADuM3160 combines high-speed CMOS logic with micro-transformers on-chip, eliminating the need for external high-voltage isolation components. The device buffers and re-times D+ and D−, making it transparent to the USB host and peripheral. Because it isolates only the USB data lines, an isolated supply and VBUS management are still required on each side. Typical applications include medical patient-monitoring USB interfaces, industrial PLC programming ports, isolated data acquisition systems, USB DACs, and test instrumentation. The 12 Mbps throughput supports USB 1.1 and USB 2.0 full-speed operation, which covers most HID, CDC, and audio class devices. When designing with the ADuM3160, maintain proper supply decoupling on VDD1 and VDD2, keep the D+/D− traces impedance-controlled, and provide an isolated DC-DC supply to the secondary side. Verify that the total barrier capacitance meets the isolation requirements of the target safety standard.
ADUM3160BRWZ-R - 2.5kV USB Digital Isolator, 12Mbps | Analog Devices
The Analog Devices ADUM3160BRWZ-R is a USB port isolator based on iCoupler technology, providing 2500 Vrms isolation with 12 Mbps full-speed USB signaling in a 16-pin SOIC-W (RW) wide-body package. It combines high-speed CMOS with monolithic air-core transformer technology to deliver robust galvanic isolation between upstream USB host and downstream peripheral devices, supporting both low-speed (1.5 Mbps) and full-speed (12 Mbps) USB operation while remaining USB 2.0 compatible. The -R suffix denotes the tape-and-reel packaging option. A USB digital isolator is a specialized galvanic isolation component that breaks the electrical ground connection between a USB host (PC, hub, or embedded controller) and a USB peripheral, while transparently passing the differential D+/D- data lines and providing isolated VBUS power. ADUM3160BRWZ-R belongs to the digital isolator IC family within interface ICs, sitting hierarchically under USB isolators > digital isolators > interface ICs > integrated circuits. This category is critical in medical, industrial, and test equipment where USB grounds create ground loops or expose sensitive downstream circuitry to fault voltages. Key features include 2500 Vrms reinforced isolation per UL 1577, 25 kV/us minimum common-mode transient immunity (CMTI), and 7 mA maximum upstream supply current at 1.5 Mbps with 8 mA at 12 Mbps. Operating from a 3.0 V to 5.5 V supply on the upstream side, the device draws minimal quiescent current and provides enhanced system-level ESD performance per IEC 61000-4-x. The wide-body SOIC-16 package offers 8 mm creepage/clearance for high-voltage safety compliance, far exceeding standard SOIC-8 isolators. Internal air-core transformers handle signal isolation, replacing optocouplers with higher bandwidth, lower power consumption, and superior CMTI performance. Typical applications span isolated USB peripherals, medical device USB ports (patient-connected equipment requiring 2500 V isolation), industrial USB data acquisition modules, USB-to-UART bridges with ground isolation, and test & measurement instruments where USB ground loops would corrupt measurements. Compared with optocoupler-based USB isolation schemes that require separate D+/D- isolators plus discrete drivers, the ADUM3160 integrates the complete USB isolation channel into a single chip, simplifying BOM and PCB layout. When designing with this part, place 0.1 uF bypass capacitors on both VDDP and VDD3.3 pins within 2 mm of the device. Verify that the application requires only low or full-speed USB - this device is NOT rated for 480 Mbps high-speed USB; for HighSpeed isolation consider ADUM3161 or external solutions. Maintain proper creepage distance on PCB and avoid routing signal traces beneath the package to preserve 2500 Vrms isolation integrity.
ADUM3160BRWZ-RL - 2.5kV USB Digital Isolator 12Mbps SOIC-16 | Analog Devices
The Analog Devices ADUM3160BRWZ-RL is a 2.5 kV rms USB digital isolator based on Analog Devices iCoupler technology, supporting low-speed (1.5 Mbps) and full-speed (12 Mbps) USB signalling in a 16-pin SOIC-W (RW-16) wide-body surface-mount package. It integrates high-speed CMOS with monolithic air-core transformers to provide reinforced galvanic isolation across the USB D+/D- data pair, eliminating ground loops while preserving USB plug-and-play enumeration. The device operates with a working withstand voltage of 2.5 kV rms, common-mode transient immunity (CMTI) of 25 kV/us microsecond minimum, and draws typical quiescent current in the single-digit milliamp range from both VBUS1 and VBUS2 rails. A digital isolator is a device that transfers logic signals across a galvanically-isolated barrier using an internal chip-scale transformer, capacitive, or optical coupler. Within the broader IC taxonomy, the ADUM3160 occupies the digital isolator subcategory of interface ICs, which themselves sit under the power-management-and-isolation umbrella used in safety-critical systems. Unlike a generic multi-channel isolator, the ADUM3160 implements the USB-specific pull-up/pull-down and speed-selection logic required by the USB 1.1 specification, allowing it to transparently appear as a peripheral or directly to upstream port without host-side firmware changes. Key features include transparent USB 1.1 full/low-speed signalling, hardwired speed selection through dedicated SPD pin logic, integrated upstream/downstream pull-up and pull-down resistors matched to the USB electrical layer, and creep-supplied dual-side power domains that allow the host and device sides to operate from independently regulated 5 V or 3.3 V rails. These features allow drop-in insertion into existing USB-1.1-compliant PCB footprints without external logic translation. The 16-lead SOIC-W package provides a minimum 8 mm creepage distance along the package body, supporting the 2.5 kV rms isolation rating certified to UL, VDE, and IEC 61010-1 reinforced-insulation standards. Typical applications include isolated USB ports in industrial process control and factory automation, medical-device USB data acquisition with patient-protection isolation, USB-to-host isolation for test-and-measurement instrumentation, and isolated programming/debug interfaces for embedded targets operating in high-noise industrial environments. The wide-body SOIC package also supports 5 kV reinforced isolation variants in the ADUM3160 family by way of the ADuM3160/ADuM3161 derivatives. When designing with this device, place ferrite beads on VBUS1 and VBUS2 rails to suppress common-mode current noise on the upstream and downstream power domains, and observe the minimum 8 mm PCB creepage distance between the host-side and peripheral-side ground planes. The SPD pin must be hardwired to VBUS4 or GND to select full-speed or low-speed mode respectively; it cannot be changed dynamically after enumeration.
ADUM3161BRWZ - USB Digital Isolator 2.5kV | Analog Devices
The ADUM3161BRWZ is a USB digital isolator from Analog Devices, based on iCoupler technology. It provides galvanic isolation for USB signals, supporting full-speed (12 Mbps) and low-speed (1.5 Mbps) data rates. The device is housed in a 16-lead SOIC-W (wide body) package and offers 2.5 kVrms isolation voltage, making it suitable for applications requiring robust isolation between USB ports and host controllers. A USB digital isolator is a component that provides electrical isolation between a USB interface and the rest of the system, preventing ground loops, noise, and voltage spikes from damaging sensitive electronics. It uses magnetic or capacitive coupling to transfer data across an isolation barrier, ensuring signal integrity while maintaining safety. In the hierarchy of isolation components, a USB isolator is a specialized type of digital isolator, which falls under the broader category of interface ICs, which are part of integrated circuits. Key features of the ADUM3161BRWZ include a data rate of 12 Mbps (full-speed USB), 2.5 kVrms isolation voltage, and a common-mode transient immunity (CMTI) of 25 kV/µs. The device operates from a 3.0V to 5.5V supply on both sides, allowing flexible integration with various USB controllers. It also features an integrated DC-to-DC converter, eliminating the need for an external isolated power supply, which simplifies design and reduces component count. Technically, the ADUM3161BRWZ uses Analog Devices' iCoupler technology, which combines high-speed CMOS and monolithic air core transformers to achieve reliable isolation. The device provides two isolation channels: one for upstream data (D+ and D-) and one for downstream control signals. It also includes an integrated oscillator and rectifier to generate an isolated supply, ensuring proper operation without external power components. Typical applications include USB isolation in medical devices, industrial automation, and test equipment, where safety and noise immunity are critical. The device is also used in USB hubs and peripheral devices to prevent ground loops and protect against electrostatic discharge (ESD). When designing with the ADUM3161BRWZ, ensure proper PCB layout with adequate spacing between the isolated and non-isolated grounds. Place decoupling capacitors close to the VDD pins on both sides to minimize noise. The device is RoHS compliant and available in tape and reel packaging.
ADUM3161BRWZ-RL7 - 6-Ch Digital Isolator 150Mbps | Analog Devices
The ADUM3161BRWZ-RL7 is a 6-channel digital isolator from Analog Devices, based on iCoupler technology. It provides galvanic isolation up to 3000Vrms and supports data rates up to 150Mbps with a common-mode transient immunity (CMTI) of 75kV/µs. The device is housed in a 16-lead SOIC-W package (0.295" width) and operates over a supply voltage range of 1.7V to 5.5V on both sides, making it suitable for low-voltage and mixed-voltage systems. 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 ADUM3161BRWZ-RL7 uses monolithic air core transformers and CMOS technology, offering superior performance compared to optocouplers, including higher speed, lower power consumption, and better reliability. Key features include 6 independent isolation channels with a channel configuration of 5 forward and 1 reverse, a wide supply range of 1.7V to 5.5V, and a high data rate of 150Mbps. The device also features a CMTI of 75kV/µs, ensuring robust operation in noisy industrial environments. The SOIC-16 package provides a compact footprint for space-constrained designs. The ADUM3161BRWZ-RL7 is designed for use in industrial automation, motor control, and isolated communication interfaces. Its high-speed capability makes it ideal for SPI, UART, and other serial protocols requiring fast data transfer. The device is also suitable for medical equipment where patient isolation is critical. When designing with this isolator, 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 is RoHS compliant and operates over a temperature range of -40°C to +125°C.
ADUM3201ARZ - Dual-Channel Digital Isolator, 1Mbps, 2.5kV | Analog Devices
The Analog Devices ADUM3201ARZ is a dual-channel digital isolator based on ADI's proprietary iCoupler technology, delivering 1Mbps data throughput, 2.5kVrms isolation, and 25kV/us common-mode transient immunity (CMTI) in an 8-pin SOIC (3.90mm body width) package. The RZ suffix denotes the wide-body SOIC-8 variant that is pin-for-pin compatible with most 8-pin optocouplers and competing digital isolators. Operating supply range is 2.7V to 5.5V on each side of the barrier with independent channel-by-channel configuration. The iCoupler architecture replaces LED/photodiode optocoupler structures with on-chip CMOS and monolithic air-core transformers, eliminating LED aging, current-drive resistors, and optical-degradation failure modes. What is a digital isolator? A digital isolator is a semiconductor device that transmits logic-level signals across a galvanically-isolated barrier (no conductive path between input and output) using either magnetic (transformer-based iCoupler), capacitive, or optical (LED + photodiode) coupling. Digital isolators occupy the 'isolation' tier within the power management / signal integrity hierarchy, sitting between general-purpose logic and the broader category of interface ICs. The principal figure-of-merit is working voltage (kVrms), supplemented by CMTI (kV/us) and data rate (Mbps). Key features of the ADUM3201ARZ include two independent isolation channels supporting unidirectional (default) or reverse channel configurations, 3.3V/5V level translation across the isolation barrier, low dynamic power consumption proportional to data rate, and -40C to +125C industrial operating temperature range. The 25kV/us CMTI rating exceeds typical optocoupler specifications (often 1-10 kV/us), making it well suited to high-noise motor-drive and power-converter environments where fast transients can corrupt logic. The ADuM3201 architecture uses wafer-level transformers with CMOS drivers and receivers, yielding deterministic propagation delay around 150ns and channel-to-channel matching typically within 5ns. Because no DC path crosses the isolation, the device exhibits superior long-term reliability versus optocouplers whose LED-output CTR degrades over thousands of hours. Typical applications include isolated SPI/UART interfaces in industrial PLCs, gate-drive signal isolation for IGBT/MOSFET half-bridges, isolated ADC front-ends in data-acquisition systems, isolated USB/RS-485 transceivers, and medical equipment requiring 2.5kV patient-isolation. The wide-body SOIC-8 footprint and pin-out matches standard 8-pin optocouplers, enabling retrofit upgrades with no PCB changes. When designing with the ADuM3201ARZ, decouple each VDD pin with a 0.1uF ceramic capacitor placed within 2mm of the supply pin; insufficient decoupling can degrade CMTI performance. The device requires no external driver components - unlike optocouplers which need LED current-limit resistors - simplifying BOM count. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone - giving engineers a single reference for the ADUM3201ARZ.
ADUM3201TRZ-EP - 2.5kVrms Dual Digital Isolator, 25Mbps | ADI
The Analog Devices ADUM3201TRZ-EP is a dual-channel digital isolator based on ADI's proprietary iCoupler technology, rated for 2500 Vrms isolation voltage and supporting data rates up to 25 Mbps in an 8-pin SOIC_N package. It provides two independent isolation channels with 25 kV/µs common-mode transient immunity (CMTI), combining high-speed CMOS and monolithic air-core transformer technology on a single silicon die. The EP suffix indicates the enhanced-product (military/aerospace) variant supporting -40°C to +125°C operating temperature. A digital isolator is a semiconductor device that transfers data across an isolation barrier (galvanic isolation) while blocking high-voltage transients, ground potential differences, and noise between two circuit domains. iCoupler technology uses chip-scale transformers instead of LEDs and photodiodes used in optocouplers, providing superior speed, lower power, higher reliability, and tighter channel-to-channel matching. Digital isolators belong to the broader hierarchy of interface ICs (Integrated Circuits > Interface ICs > Digital Isolators > Galvanic Isolation), and they are essential in systems where functional or safety isolation is mandated by IEC 60950, IEC 62368-1, or UL 1577. Key features include 25 Mbps guaranteed data rate, 2.5 ns typical rise/fall time, low dynamic power consumption that scales with data rate, and 3.3 V or 5 V operation on either side of the barrier providing bidirectional voltage translation. The device supports bidirectional channel configurations (one forward, one reverse) for serial peripheral interface (SPI) or RS-485 half-duplex applications. The 8-SOIC package is a wide-body (0.154 inch / 3.90 mm) outline with reinforced 8 mm creepage, ensuring compliance with 2500 Vrms reinforced isolation. The ADUM3201TRZ-EP integrates planar transformers and CMOS logic in a monolithic die, eliminating optocoupler LED aging and current-transfer-ratio (CTR) drift. With 25 kV/µs CMTI it can tolerate fast switching transients in motor drive, solar inverter, and industrial I/O applications without data corruption. The supply current scales linearly with channel throughput, enabling significantly lower power than optocouplers at high data rates. Typical applications include isolated SPI interfaces in motor drives and solar inverters, isolated RS-485/RS-232 transceivers, isolated gate-drive signal paths for IGBT/MOSFET half-bridges, industrial fieldbus isolation (Profibus, Modbus), and military/aerospace avionics requiring EP-grade temperature and reliability. The EP suffix enables use in defense and aerospace systems subject to MIL-STD-883 environmental stress. When designing with this isolator, ensure that the wide-body SOIC land pattern maintains the 8 mm minimum creepage required for 2500 Vrms reinforced isolation per IEC 62368-1. Decoupling capacitors of 0.1 µF should be located within 2 mm of each supply pin to handle high-frequency switching transients. Avoid routing signal traces directly beneath the device to preserve the isolation gap. This page synthesizes distributor pricing across 9+ sources, drop-in ADI and cross-brand alternative MPNs, and engineering design notes not found in the standalone manufacturer datasheet.
ADUM3400CRWZ-RL - Quad-Channel Digital Isolator, 2.5kV, 90Mbps | Analog Devices
The Analog Devices ADUM3400CRWZ-RL is a 4-channel digital isolator based on Analog Devices iCoupler technology, providing 2500Vrms isolation with up to 90 Mbps data rate in a 16-pin wide-body SOIC (RW-16) package supplied on a 13-inch tape-and-reel. A digital isolator is an integrated component that transmits binary data across an electrical isolation barrier using non-conducting coupling mechanisms, replacing legacy optocouplers in modern industrial and instrumentation designs. Digital isolators sit hierarchically between general-purpose isolators and the broader signal conditioning and interface IC family, and they are commonly deployed upstream of an MCU's GPIO, downstream of a sensor's logic output, or across the high-side/low-side boundary in motor-drive and power-converter systems. Where applicable, they replace optocouplers with the benefits of higher speed, tighter channel matching, and lower timing skew. Key features of the ADUM3400CRWZ-RL include a 90 Mbps guaranteed signaling rate per channel (5 V operation), a CMTI rating of 25 kV/us minimum, and enhanced system-level ESD reliability per IEC 61000-4-x. The device operates from 2.7 V to 5.5 V on either side of the barrier, supports 4/0 channel directionality (all four channels the same direction), and consumes a low 1.4 mA per channel at 0 Mbps to 2 Mbps. The package provides a withstand-to-works rating of 2500 Vrms for 1 minute per UL 1577 and is rated for 5 kV HBM ESD on the I/O pins. The iCoupler architecture combines high-speed CMOS with monolithic air-core transformers, achieving data rates roughly 5-10x faster than optocouplers at a fraction of the LED-degradation-related concerns. The 16-SOIC wide-body footprint gives 8 mm of minimum external clearance, and the device is qualified for industrial temperature ranges. Typical uses include isolated SPI/UART interfaces between microcontrollers and high-voltage drivers, gate-drive signal isolation in motor-control inverters, isolated data acquisition between ADCs and FPGAs, and industrial fieldbus (RS-485, CAN) interface isolation. The wide temperature range also supports harsh industrial environments. When designing with this part, observe the 8 mm minimum external clearance required by the wide-body SOIC footprint for 2500 Vrms reinforced isolation. The two supply pins (VDD1 and VDD2) must be bypassed with 0.1 uF capacitors placed as close as possible to the IC. Pin 4 (DISABLE input) and the four data channels follow a specific logic convention that must be respected during power-up sequencing. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing an information layer beyond raw spec extraction.
ADUM4151ARIZ-RL - 5kV 7-CH SPIsolator Digital Isolator | Analog Devices
The Analog Devices ADUM4151ARIZ-RL is a 5 kV rms, 7-channel SPIsolator digital isolator optimized for isolated serial peripheral interfaces (SPI), housed in a 20-pin wide-body SOIC (increased creepage) package. It carries the auxiliary-channel configuration of 2 forward / 1 reverse on top of the four dedicated SPI data lanes (CLK, MO/SI, MI/SO, SS), and supports data rates up to 2 Mbps with a common-mode transient immunity (CMTI) of 25 kV/µs. The -RL suffix denotes a 13-inch tape-and-reel packaging option. A SPIsolator is a specialized digital isolator designed to break ground loops across the SPI bus by combining reinforced galvanic isolation with very low propagation delay. Within the broader power-management and interface-IC taxonomy, a SPIsolator belongs to digital isolators -> interface isolators -> interface ICs -> integrated circuits. The ADUM4151 family is built on Analog Devices' proprietary iCoupler chip-scale transformer technology, replacing legacy optocouplers with a smaller, faster, and more reliable silicon-based transformer coupling. Key differentiating features include 5 kV rms reinforced isolation per UL 1577, 25 kV/µs minimum CMTI for robust operation in noisy motor-drive and power-converter environments, 2 Mbps signaling across all seven channels, and a maximum propagation delay of 25 ns that preserves SPI timing margins for high-speed master-slave links. The wide-body SOIC_W package provides >8 mm creepage, satisfying IEC 60747-17 / VDE 0884-11 reinforced-insulation requirements on standard 2-layer PCB layouts. On the architectural side, the device integrates an isolated DC-to-DC converter bias inside the same chip, removing the need for an external isolated supply on the secondary side - a major system BOM saving versus optocoupler-based isolation stacks. Each SPI lane is independently bidirectional-aware through the auxiliary channel mapping, and the device ships in industrial (-40°C to +125°C) operating grade. Typical applications include isolated SPI between microcontroller and gate-driver ASICs in 1.2 kV/3.3 kV solar inverters, isolated command/feedback links in industrial PLCs and servo drives, isolated sensor readouts for medical imaging systems, and reinforced isolation barriers in EV traction inverters and battery-management systems. It also fits functional-safety circuits where the auxiliary-channel mapping is required. When designing with the ADUM4151ARIZ-RL, place the device close to the SPI master to keep the un-isolated stub short, and observe the SOIC_W pad geometry (Gull-wing, 7.50 mm body width) for clean wave-solder profiles. Avoid routing the secondary-side traces near switching nodes; the 25 kV/µs CMTI rating still requires a 4 mm minimum keep-out from dV/dt edges for best margin. This page synthesizes verified distributor pricing, drop-in pin-compatible alternatives, and design notes that go beyond the manufacturer datasheet to accelerate BOM decisions.
ADUM4154ARIZ - 5kV SPI Digital Isolator | Analog Devices
The ADUM4154ARIZ is a 4-channel SPIsolator digital isolator from Analog Devices, optimized for serial peripheral interface (SPI) applications. It provides galvanic isolation up to 5000 Vrms and supports SPI clock rates up to 17 MHz. The device is based on Analog Devices' iCoupler chip-scale transformer technology, which offers low propagation delay and jitter in the CLK, MO/SI, MI/SO, and SS SPI bus signals. It comes in a 20-pin SOIC-W package (0.295" width, 7.50mm) and operates over a wide temperature range of -40°C to +125°C. A digital isolator is a device that transfers digital signals across an isolation barrier, providing galvanic isolation to protect sensitive circuitry from high voltages, ground loops, and noise. In the hierarchy of isolation components, a digital isolator falls under the category of isolation ICs, which are part of the broader power management and signal conditioning ICs. The ADUM4154ARIZ specifically targets SPI communication, a synchronous serial interface widely used in embedded systems to connect microcontrollers to sensors, ADCs, DACs, and other peripherals. Key features of the ADUM4154ARIZ include support for up to four slave devices via two address pins, a 2 Mbps data rate (as listed by DigiKey, though the datasheet indicates 17 MHz SPI clock), and a high common-mode transient immunity (CMTI) of 25 kV/µs. The device operates with a supply voltage range of 4.5V to 5.5V on VDD1 and 3.0V to 3.6V on VDD2, allowing level shifting between different logic domains. The propagation delay is low, ensuring minimal skew in SPI timing. Technically, the ADUM4154ARIZ uses iCoupler technology, which employs micro-transformers to transmit data across the isolation barrier. This approach provides superior performance compared to optocouplers, including higher data rates, lower power consumption, and better reliability. The device also includes an enable pin for power management and a thermal shutdown feature for protection. Typical applications include industrial automation, motor control, data acquisition systems, and any SPI-based system requiring isolation between a controller and peripheral devices. The high CMTI makes it suitable for noisy environments such as factory floors and power conversion systems. When designing with the ADUM4154ARIZ, ensure proper PCB layout with adequate creepage and clearance distances for the 5kV isolation rating. Also, decouple both supply rails with 0.1µF capacitors close to the pins to minimize noise.
ADUM4154ARIZ-RL - 5kV SPI Digital Isolator | Analog Devices
The ADUM4154ARIZ-RL is a 5 kV, 7-channel, SPIsolator digital isolator from Analog Devices, optimized for serial peripheral interface (SPI) applications. It supports up to four slave devices and is based on the iCoupler chip-scale transformer technology. The device provides 5000 Vrms isolation, a data rate of 2 Mbps, and a common-mode transient immunity (CMTI) of 25 kV/µs. It is available in a 20-SOIC (0.295", 7.50mm Width) package, suitable for surface-mount assembly. A digital isolator is a device 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 component in industrial automation, medical equipment, 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 ADUM4154ARIZ-RL include support for SPI clock rates up to 17 MHz, low propagation delay and jitter, and the ability to route the slave select signal to one of four destinations using two low-speed address pins. The device operates over a wide temperature range of -40°C to +125°C and supports supply voltages of 4.5V to 5.5V on VDD1 and 3.0V to 3.6V on VDD2. It is RoHS compliant and lead-free. The ADUM4154ARIZ-RL uses iCoupler technology, which employs chip-scale transformers to achieve isolation, offering advantages over optocouplers such as higher data rates, lower power consumption, and better reliability. The device is designed to meet stringent safety standards, making it suitable for applications requiring reinforced isolation. Typical applications include SPI isolation in industrial fieldbus systems, isolated sensor interfaces, motor control, and medical monitoring equipment. The device's high CMTI ensures reliable operation in noisy environments, and its low propagation delay supports high-speed SPI communication. When designing with this device, ensure proper PCB layout to maintain isolation spacing and minimize parasitic capacitance. Also, consider the power supply decoupling to ensure stable operation across the isolation barrier.
ADUM4154BRIZ - 5kV SPI Digital Isolator | Analog Devices
The ADUM4154BRIZ is a 5 kV, 7-channel SPIsolator digital isolator from Analog Devices, optimized for serial peripheral interface (SPI) applications. It supports SPI clock rates up to 17 MHz and provides isolation for up to four peripheral devices. The device is based on Analog Devices' iCoupler chip-scale transformer technology, which offers low propagation delay and jitter in the CLK, MO/SI, MI/SO, and SS SPI bus signals. It comes in a 20-lead SOIC-W package (0.295" width, 7.50 mm) and is rated for 5000 Vrms isolation voltage with a common-mode transient immunity (CMTI) of 25 kV/µs. 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 used to protect sensitive electronics from high voltages, ground loops, and noise, and is essential in industrial, medical, and automotive applications where safety and signal integrity are critical. Digital isolators are part of the broader category of interface ICs, which also includes transceivers, level shifters, and optocouplers. Key features of the ADUM4154BRIZ include its 4-channel SPI isolation with support for multiple slaves, a data rate of 34 Mbps, and a wide supply voltage range of 3 V to 5.5 V. The device also features low propagation delay and jitter, ensuring reliable high-speed SPI communication. The iCoupler technology provides superior performance compared to optocouplers, including higher data rates, lower power consumption, and better reliability. The ADUM4154BRIZ is designed for use in industrial automation, motor control, and isolated SPI communication in data acquisition systems. Its high CMTI of 25 kV/µs makes it suitable for harsh environments with fast voltage transients. The device operates over a temperature range of -40°C to +125°C, making it suitable for industrial applications. When designing with the ADUM4154BRIZ, it is important to ensure proper PCB layout to maintain isolation performance. The device requires careful attention to creepage and clearance distances, as well as proper decoupling of the power supply pins. The datasheet provides detailed guidelines for layout and application circuits.
ADUM4160BRIZ - 5kV USB Digital Isolator, 12Mbps, 16-SOIC
The Analog Devices ADUM4160BRIZ is a USB port isolator based on Analog Devices iCoupler technology, providing 5 kV rms galvanic isolation while supporting low-speed (1.5 Mbps) and full-speed (12 Mbps) USB 2.0 data rates. Housed in a 16-pin SOIC-W (RW-16) wide-body package, the part combines high-speed CMOS with monolithic air-core transformer technology to deliver up to 25 kV/us common-mode transient immunity (CMTI) and 60 ns typical propagation delay. The bidirectional architecture isolates the D+ and D- data lines while passing through VBUS power on a separate isolated path. A USB digital isolator is a specialized interface IC that bridges a USB host or hub to a peripheral across an isolation barrier. It belongs to the broader family of digital isolators, which sit within the signal-isolation hierarchy of interface ICs and ultimately within the power-management and signal-conditioning semiconductor category. Unlike generic multi-channel digital isolators, the ADuM4160 transparently handles USB handshaking, suspend/resume, and chirp signaling so that microcontrollers can present only the D+/D- pins without software overhead. Key specifications include 5000 V rms isolation voltage (1 minute per UL 1577 / IEC 60747-17), 5.5 V maximum VBUS supply on the upstream side, 7 mA upstream supply current at 1.5 Mbps, 12 Mbps full-speed operation, 25 kV/us minimum CMTI, and 60 ns typical propagation delay. The ADUM4160BRIZ suffix denotes the wide-body 16-SOIC (0.295 in., 7.5 mm width) with 8 mm minimum creepage distance, suitable for reinforced isolation per IEC 60601-1 and IEC 60950-1. Architecturally the device integrates two iCoupler data channels plus a dedicated isolated DC-DC path, allowing single-package +5V VBUS-to-peripheral isolation. Internal edge-detect logic monitors the bus idle level required by USB 2.0 and automatically latches the correct state, eliminating the need for external buffering. The wide-body SOIC provides reinforced insulation and supports 250 V rms or 400 V rms working voltage per VDE 0884-11. Typical applications include isolated USB medical device interfaces, industrial PLC programming ports, USB-to-UART isolation bridges, isolated data acquisition front ends, and patient-monitoring equipment where reinforced isolation is mandatory. The wide-body SOIC footprint also supports high-density USB hub designs requiring 5 kV isolation per port. When designing with the ADuM4160BRIZ, observe the recommended PCB layout to maintain 8 mm creepage: route the upstream (host-side) and downstream (peripheral-side) copper pours on opposite PCB surfaces with no overlap beneath the package. Place VBUS bypass capacitors as close as possible to the VDD pins to meet USB inrush current requirements. Decoupling should use 0.1 uF ceramic capacitors in parallel with 10 uF bulk capacitors on both sides of the isolation barrier. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone - in particular a comparison table that highlights differences between ADI, Silicon Labs, TI, and 3PEAK pin-compatible USB isolator families, and selection tips for matching CMTI and data-rate requirements to your medical or industrial application.
ADUM4220ARWZ - 4A Isolated Half-Bridge Gate Driver | Analog Devices
The ADUM4220ARWZ is a 4 A isolated, half-bridge gate driver from Analog Devices that employs iCoupler technology to provide independent and isolated high-side and low-side outputs. It is designed to drive power MOSFETs and IGBTs in a wide range of power conversion applications, offering 5000 Vrms isolation and a propagation delay of 38 ns. The device operates from a supply voltage range of 3.0 V to 5.5 V on the input side and 4.5 V to 18 V on the output side, making it versatile for various gate drive requirements. Isolated gate drivers are essential components in power electronics that provide galvanic isolation between the low-voltage control circuitry and the high-voltage power stage. They ensure safe and reliable switching of power transistors by transmitting gate drive signals across an isolation barrier, preventing ground loops and protecting sensitive control electronics from high-voltage transients. The ADUM4220ARWZ is part of the ADuM4220 family, which includes variants with different isolation ratings and output configurations. Key features of the ADUM4220ARWZ include a peak output current of 4 A, which enables fast switching of large gate capacitances, and a high common-mode transient immunity (CMTI) of 100 kV/µs, ensuring reliable operation in noisy environments. The device also features independent high-side and low-side outputs with a dead-time control input, allowing precise timing of complementary switching signals. The 16-lead SOIC package (SOIC-16) is compact and suitable for space-constrained designs. Technically, the ADUM4220ARWZ uses Analog Devices' proprietary iCoupler technology, which integrates micro-transformers and high-speed CMOS to achieve isolation without the need for external components. This results in lower power consumption and higher reliability compared to traditional optocoupler-based solutions. The device also includes undervoltage lockout (UVLO) on both the input and output supplies, ensuring proper operation during power-up and brownout conditions. Typical applications include isolated switch-mode power supplies, motor drives, solar inverters, and industrial automation systems. The high isolation voltage and fast switching make it ideal for applications requiring robust galvanic isolation and high-frequency operation. The ADUM4220ARWZ is also suitable for automotive and industrial environments where reliability and safety are paramount. When designing with the ADUM4220ARWZ, it is important to ensure proper PCB layout to minimize parasitic inductance and maintain signal integrity. The input and output supplies should be adequately decoupled with ceramic capacitors placed close to the device pins. Additionally, the dead-time control input should be configured to prevent shoot-through in half-bridge topologies.
ADUM5200CRWZ - 2.5kV Isolator with isoPower DC/DC | Analog Devices
The Analog Devices ADUM5200CRWZ is a dual-channel digital isolator with an integrated isolated DC-to-DC converter (isoPower), delivering up to 500 mW of regulated isolated power in a 16-lead SOIC (0.295 inch / 7.50 mm) wide-body package. Based on Analog Devices' iCoupler technology, the device combines two 25 Mbps NRZ data isolation channels with a fully isolated power stage, replacing discrete isolator-plus-DC/DC implementations with a single component. A digital isolator is a semiconductor device that transfers logic signals across a galvanic isolation barrier (typically using transformer, capacitive, or optical coupling) while blocking DC and high-voltage transients. Isolators are categorized by isolation voltage (1.5 kV, 2.5 kV, 5 kV rms), channel count (1-8), and data rate (DC to >100 Mbps). The ADUM5200 belongs to the isoPower family, a sub-category that integrates a regulated isolated supply alongside the data channels, eliminating the need for a separate isolated DC/DC module. In the broader system hierarchy, digital isolators sit between logic-level signals and high-voltage domains in industrial, medical, and energy systems. Key specifications include 2.5 kV rms isolation voltage, 25 Mbps data rate per channel (NRZ signaling), 25 kV/us minimum common-mode transient immunity (CMTI), 3.3 V or 5 V regulated output, and up to 500 mW output power from a 5.0 V input. The Schmitt-trigger inputs ease interfacing with slow or noisy sources, and the wide-body SOIC package provides >8 mm creepage per IEC 60601 / IEC 60747-17 spacing requirements for reinforced isolation. The device uses a planar transformer-based DC/DC converter stage with PWM control. Internal regulation feedback is sent across the isolation barrier via a proprietary iCoupler channel, allowing tight output regulation without optocouplers. The result is a smaller BOM and a simpler PCB layout versus discrete solutions, at the cost of lower maximum output power than dedicated isolated converter modules. Typical applications include isolated RS-232/RS-485 interfaces, isolated gate-drive power for IGBT/MOSFET bridges, industrial fieldbus (Profibus, CAN) isolation, medical device patient-isolated interfaces, and renewable-energy inverter control. The high CMTI rating makes the part especially suitable for driving power-converter gate drivers across noisy high-voltage domains. When designing with the ADUM5200CRWZ, observe the decoupling recommendations in the datasheet (10 uF low-ESR on VDD and VISO) and respect the thermal envelope: at 500 mW output and 85% efficiency the part dissipates roughly 0.5 W internally. Provide adequate copper area beneath the exposed paddle region to keep junction temperature within the 105 C maximum. This page synthesizes distributor pricing, drop-in alternatives, application notes, and design guidance not found in the manufacturer datasheet alone.
ADUM5211ARSZ-RL7 - 2-Ch Digital Isolator w/ isoPower DC/DC | ADI
The Analog Devices ADUM5211ARSZ-RL7 is a dual-channel digital isolator with an integrated, isolated dc-to-dc converter (isoPower) housed in a 20-pin SSOP package. It provides 2500 Vrms isolation, supports 2 data channels at up to 1 Mbps, and offers 25 kV/µs common-mode transient immunity (CMTI). The integrated converter delivers adjustable, regulated isolated power between 3.135 V and 5.25 V from a primary-side supply, eliminating the need for a separate isolated power supply in low-power isolated designs. A digital isolator is a semiconductor device that transfers logic signals across a galvanic isolation barrier using chip-scale micro-transformers instead of optocouplers or discrete transformers. In the system hierarchy, it sits between an MCU/processor on the logic side and a sensor, gate driver, or field-side circuitry on the protected side, providing both functional safety (signal integrity) and safety isolation (creepage/clearance for high-voltage transients). The ADUM5211 extends this role by also providing isolated power in a single IC. Key features include low power consumption suitable for 3.3 V or 5 V logic rails, channel-to-channel matching of propagation delay, and -40 °C to +105 °C industrial temperature operation. The iCoupler chip-scale transformer technology replaces optocouplers, delivering faster data rates (1 Mbps) without LED degradation. A regulated feedback loop holds the secondary output within tolerance across load and temperature variations. The architecture combines planar transformer windings for the dc-to-dc converter with logic-side transformers for the digital channels on a single die. The converter operates as a peak-current-mode flyback-equivalent topology with internal MOSFETs, and the digital channels use differential signaling across the isolation barrier. SSOP-20 packaging gives a compact footprint while maintaining 8 mm of creepage for reinforced isolation when routed on standard PCB processes. Typical applications include isolated SPI interfaces to gate drivers, RS-485/RS-232 isolation in industrial PLCs, isolated power for 4-20 mA loops, and isolated MCU communication in solar inverter gate-driver bias supplies. By co-integrating power and signal isolation, the ADUM5211 reduces BOM count, board area, and BOM-driven failure modes compared to optocoupler + discrete DC-DC solutions. When designing with the ADUM5211, ensure adequate decoupling on both primary (VDD1) and secondary (VDD2/VISO) rails with 0.1 µF and 10 µF ceramic capacitors placed close to the pins. The isolated output voltage is set by an external resistor divider on the secondary side; do not exceed the 100 mA maximum output current of the integrated DC-DC, and add a soft-start capacitor if load inrush exceeds 50 mA.
ADUM5401ARWZ - Quad-Channel Digital Isolator with isoPower | Analog Devices
The ADUM5401ARWZ is a quad-channel digital isolator with integrated, isolated DC-to-DC converter (isoPower) from Analog Devices. It provides up to 500 mW of regulated, isolated power at 5.0 V or 3.3 V from a 5.0 V input supply, or at 3.3 V from a 3.3 V supply. The device is based on iCoupler technology, which uses chip-scale transformers to achieve isolation ratings of 2500 Vrms. It supports data rates up to 1 Mbps and offers a common-mode transient immunity (CMTI) of 25 kV/µs. The ADUM5401ARWZ comes in a 16-lead SOIC-W package (0.295" width, 7.50 mm) and is suitable for general-purpose isolation in industrial, medical, and communication systems. 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 used to protect sensitive electronics from high voltages, ground loops, and noise, and to ensure safety in applications where human contact is possible. Digital isolators are part of the broader category of isolation components, which also includes optocouplers and magnetic isolators. The ADUM5401ARWZ integrates the isolation barrier and a DC-to-DC converter, eliminating the need for a separate isolated power supply, which simplifies design and reduces board space. Key features of the ADUM5401ARWZ include its integrated isoPower DC-to-DC converter, which provides up to 500 mW of isolated power, and its four isolation channels, which can be configured for various data directions. The device operates over a wide temperature range of -40°C to +105°C and is available in a 16-lead SOIC-W package. It is RoHS compliant and lead-free, making it suitable for environmentally conscious designs. Technically, the ADUM5401ARWZ uses iCoupler technology, which employs chip-scale transformers to transmit data across the isolation barrier. This approach offers advantages over optocouplers, such as higher data rates, lower power consumption, and better reliability. The integrated DC-to-DC converter uses a push-pull topology to generate isolated power, and it requires only a few external components, such as a transformer and capacitors, to operate. Typical applications for the ADUM5401ARWZ include isolated SPI interfaces, industrial field buses, motor control, and medical equipment. Its integrated power supply makes it ideal for applications where a separate isolated power supply is not available or would be too bulky. The device is also suitable for use in data acquisition systems, where it can isolate analog and digital sections. When designing with the ADUM5401ARWZ, it is important to consider the power dissipation and thermal performance. The integrated DC-to-DC converter can generate heat, so adequate PCB copper area and thermal vias are recommended. Additionally, the input and output power supplies should be properly decoupled with capacitors to ensure stable operation.
ADUM5401ARWZ-RL7 - Quad Digital Isolator w/ isoPower | ADI
The ADUM5401ARWZ-RL7 from Analog Devices is a quad-channel digital isolator with integrated isoPower DC-to-DC converter, providing up to 500 mW of regulated, isolated power. It is based on iCoupler technology and comes in a 16-lead SOIC-W package. The device supports data rates up to 1 Mbps and offers 2500 Vrms isolation with 25 kV/µs common-mode transient immunity (CMTI). It operates from a 5.0 V or 3.3 V supply and provides isolated power at 5.0 V or 3.3 V, eliminating the need for a separate isolated DC-DC converter in low-power designs. 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. They are widely used in industrial automation, medical equipment, and communication systems to protect sensitive electronics and ensure signal integrity. Key features of the ADUM5401ARWZ-RL7 include four independent isolation channels, integrated DC-to-DC converter with up to 500 mW output power, 2500 Vrms isolation rating, 1 Mbps data rate, and 25 kV/µs CMTI. The device also features thermal shutdown protection and operates over a temperature range of -40°C to +105°C. The integrated isoPower converter simplifies power supply design by providing isolated power without an external transformer, reducing board space and component count. Technically, the ADUM5401 uses Analog Devices' iCoupler technology, which employs chip-scale transformers to transmit data and power across the isolation barrier. This approach offers advantages over optocouplers, including higher data rates, lower power consumption, and better reliability. The integrated DC-to-DC converter uses a push-pull architecture to generate isolated power, achieving efficiencies up to 33% at full load. The device is designed to meet safety standards such as UL 1577 and IEC 60747-5-5, ensuring robust isolation performance. Typical applications include industrial field bus isolation, isolated SPI/UART interfaces, power supply control, and data acquisition systems. The ADUM5401 is particularly suited for applications requiring isolated power and signal isolation in a compact form factor, such as PLCs, motor drives, and medical monitoring equipment. Its 2500 Vrms isolation rating and 1 Mbps data rate make it ideal for many industrial and instrumentation applications. When designing with the ADUM5401, it is important to ensure proper PCB layout to maintain isolation spacing and minimize parasitic capacitance. The integrated DC-to-DC converter requires external capacitors for stability and filtering. Additionally, the input and output supplies should be decoupled with appropriate capacitors to ensure reliable operation.
ADUM5403ARWZ - Quad-Channel Digital Isolator with isoPower | Analog Devices
The ADUM5403ARWZ is a quad-channel digital isolator with integrated isoPower DC-to-DC converter from Analog Devices. It provides 2500 Vrms isolation and supports data rates up to 1 Mbps with a common-mode transient immunity (CMTI) of 25 kV/µs. The device is housed in a 16-pin SOIC (0.295", 7.50mm width) package and operates over a wide temperature range. Digital isolators are components that transmit digital signals across an isolation barrier, preventing high-voltage transients and ground loops from affecting sensitive circuitry. They are essential in applications requiring galvanic isolation, such as industrial automation, medical equipment, and power systems. The ADUM5403 integrates the isolation barrier and a DC-to-DC converter, eliminating the need for a separate isolated power supply. Key features include four isolation channels, an integrated DC-to-DC converter providing up to 500 mW of regulated isolated power, and a choice of 5V or 3.3V output. The device uses iCoupler technology, which combines high-speed CMOS and monolithic transformer isolation, offering reliable performance and long-term stability. It also features thermal shutdown protection and a soft-start function to manage inrush current. The ADUM5403ARWZ is designed for robust operation in harsh environments, with a wide supply voltage range and high CMTI ensuring reliable data transfer in noisy industrial settings. The integrated DC-to-DC converter simplifies power supply design, reducing component count and board space. The device is RoHS compliant and suitable for surface-mount assembly. Typical applications include industrial field bus isolation, isolated SPI/UART interfaces, motor control, and power supply monitoring. The device is also used in medical equipment where patient safety requires galvanic isolation. Its compact SOIC-16 package and integrated power make it ideal for space-constrained designs. When designing with the ADUM5403ARWZ, ensure proper PCB layout with adequate creepage and clearance distances for the isolation rating. Place decoupling capacitors close to the power pins and follow the recommended layout guidelines in the datasheet to achieve optimal performance and reliability.
ADUM5403ARWZ-RL7 - Quad-Channel Digital Isolator with isoPower | Analog Devices
The ADUM5403ARWZ-RL7 from Analog Devices is a quad-channel digital isolator with integrated isoPower, an isolated DC-to-DC converter. It provides up to 500 mW of regulated, isolated power at 3.3 V or 5.0 V from a 5 V input supply, or at 3.3 V from a 3.3 V supply. The device supports data rates up to 25 Mbps (NRZ) across four isolation channels, with a 2.5 kVrms isolation rating and high common-mode transient immunity of >25 kV/µs. Housed in a 16-lead SOIC package with 7.6 mm creepage, it operates 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 between the input and output sides. The ADUM5403 belongs to the family of isolated data communication ICs, which includes digital isolators, isolated transceivers, and isolated power converters. By integrating the DC-to-DC converter, the ADUM5403 eliminates the need for a separate isolated power supply, simplifying design and reducing board space. Key features of the ADUM5403ARWZ-RL7 include its integrated isoPower DC-to-DC converter, which provides up to 500 mW of regulated output power, and its four independent isolation channels. The device supports both 3.3 V and 5 V logic levels, making it versatile for various system interfaces. Its high common-mode transient immunity of >25 kV/µs ensures reliable operation in noisy industrial environments. The 16-lead SOIC package with 7.6 mm creepage meets safety requirements for reinforced insulation in many applications. Technically, the ADUM5403 uses Analog Devices' iCoupler technology, which employs chip-scale transformers to transmit data and power across the isolation barrier. This approach offers advantages over optocouplers, including higher data rates, lower power consumption, and better reliability. The integrated DC-to-DC converter uses a push-pull topology to generate isolated power, with regulation achieved through a feedback path across the barrier. The device includes under-voltage lockout (UVLO) and thermal shutdown protection to ensure safe operation. Typical applications for the ADUM5403ARWZ-RL7 include industrial field bus isolation, motor control interfaces, isolated SPI/UART communication, and power supply control in isolated converters. Its integrated power makes it ideal for isolated sensor interfaces and data acquisition systems where a separate isolated supply would be impractical. The device is also suitable for medical equipment requiring patient isolation, as well as for automotive and aerospace systems where reliability is critical. When designing with the ADUM5403, it is important to ensure adequate decoupling on both the input and output power pins, as the integrated converter can generate switching noise. The datasheet recommends specific capacitor values and layout guidelines to achieve optimal performance. Additionally, the creepage distance of 7.6 mm should be considered for applications requiring specific isolation ratings.
ADUM5404ARWZ - Quad-Channel Digital Isolator with isoPower | Analog Devices
The ADUM5404ARWZ is a quad-channel digital isolator with an integrated, isolated DC-to-DC converter (isoPower) from Analog Devices. It provides 2.5 kVrms isolation and supports data rates up to 1 Mbps with a common-mode transient immunity (CMTI) of 25 kV/µs. The device is housed in a 16-lead wide-body SOIC (0.295", 7.50mm width) package, suitable for space-constrained industrial and medical applications. Digital isolators are components that transfer digital signals across an isolation barrier while preventing unwanted DC and noise from passing between two ground domains. They are essential in systems where safety, noise immunity, or ground potential differences require galvanic isolation. The ADUM5404 integrates the isolation barrier and a DC-to-DC converter, eliminating the need for a separate isolated power supply, thus simplifying design and reducing board space. Key features include four independent isolation channels, an integrated DC-to-DC converter providing up to 500 mW of regulated, isolated power, and a wide operating temperature range. The device operates from a single 5V supply and provides a regulated 5V isolated output. Its high CMTI of 25 kV/µs ensures reliable operation in noisy industrial environments, and its 1 Mbps data rate is suitable for most control and communication interfaces. Technically, the ADUM5404 uses Analog Devices' iCoupler technology, which employs chip-scale transformers for isolation, offering superior performance compared to optocouplers in terms of speed, power consumption, and reliability. The integrated DC-to-DC converter uses a push-pull topology with an internal oscillator, providing a regulated output with typical efficiency around 30-40% at full load. The device includes under-voltage lockout (UVLO) and thermal shutdown protection. Typical applications include industrial fieldbus isolation, motor control interfaces, isolated SPI/UART communication, and medical equipment requiring patient isolation. The integrated power supply makes it ideal for isolated sensor interfaces and data acquisition systems where a separate isolated supply is impractical. When designing with the ADUM5404, ensure adequate bypass capacitors on both input and output power pins to maintain stability and reduce noise. The datasheet recommends a 0.1 µF and 10 µF capacitor on the input and a 0.1 µF and 10 µF on the isolated output. Also, consider the total power budget, as the integrated converter's efficiency limits the available output current.