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ADM2567EBRNZ - 3 kV Isolated RS-485 Transceiver, 25 Mbps | Analog Devices
The Analog Devices ADM2567EBRNZ is a 3 kV rms signal and power isolated RS-485 transceiver in a 28-pin SOIC-W (wide-body) package with integrated isoPower DC-DC converter. It supports data rates up to 25 Mbps across four channels of signal isolation plus isolated power, and is rated for ±15 kV IEC 61000-4-2 ESD on the bus pins, ±6 kV IEC 61000-4-2 contact discharge on the A, B, Y, Z pins, and 250 kV/µs common-mode transient immunity (CMTI). The transceiver complies with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987 (E) for balanced transmission lines. A digital isolator with integrated isolated power is a single-package solution that combines galvanic isolation between the logic-side controller and the bus-side transceiver with an on-chip DC-DC converter, eliminating the need for an external isolated supply. This category sits inside the broader hierarchy: digital isolator → interface IC → integrated circuit → semiconductor. By embedding the isolated DC-DC, the ADM2567EBRNZ collapses two BOM items (an isolated RS-485 transceiver plus a discrete isolated supply) into one IC, saving PCB area and simplifying the safety-certification paperwork for IEC 60950 / IEC 62368-1 reinforced insulation. Key features include 1.7 V to 5.5 V VIO logic-side supply, a wide-bus supply range supported through the integrated isolated DC-DC, hot-swap capable bus pins, slew-rate-limited driver options in the slower family members, and full fail-safe receiver inputs. The half-duplex/full-duplex topology and 25 Mbps maximum signaling rate make the part suitable for industrial fieldbus networks where high noise immunity and high throughput are simultaneously required. Typical applications include PROFIBUS and Modbus nodes, isolated RS-485 links in factory automation, solar inverter communication buses, building-automation gateways, and any system that needs to meet IEC 61000-4-2 air-discharge Class B or IEC 61000-4-5 surge standards without an external TVS array. When designing with this part, follow the PCB layout recommendations in the ADM2561E/63E/65E/67E datasheet - particularly the placement of the decoupling and bypass capacitors across the integrated DC-DC and the creepage/clearance guidance that is built into the wide-body SOIC footprint.
ADM2865EBRNZ - 5.7kV Isolated RS-485 Transceiver, 25Mbps | ADI
The Analog Devices ADM2865EBRNZ is a 5.7 kV rms signal-and-power isolated RS-485 transceiver with integrated isolated DC-DC converter, supporting data rates up to 25 Mbps in a 28-pin SSOP (BRNZ, 0.295-inch / 7.50 mm wide) package. It is part of the iCoupler family and combines an isolated RS-485 driver/receiver pair with an LDO-regulated isolated power supply, eliminating the need for an external DC-DC isolation transformer in many designs. An RS-485 transceiver is a differential line driver/receiver IC used for robust, long-distance, half- or full-duplex serial communication over twisted-pair cabling in electrically noisy environments. Galvanic isolation (here, 5.7 kV rms) separates the controller-side logic ground from the bus-side ground, protecting low-voltage MCUs and protecting downstream nodes from large common-mode voltages, ground loops, and surge events. iCoupler technology is Analog Devices' transformer-based digital isolation, achieving high CMTI and low EMI compared to optocoupler-based isolation. Key features include ±15 kV IEC ESD protection on the bus pins, 250 kV/µs common-mode transient immunity (CMTI), 4-channel (3/3 or similar logic-side) signal path, and compliance with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E). The on-chip isolated power delivers an LDO-regulated 3.3 V or 5 V to the bus side from a single 3 V to 5.5 V controller-side supply, simplifying BOM and PCB layout. The architecture stacks a digital isolator + RS-485 transceiver + isoPower transformer/rectifier/regulator in one SSOP-28. Compared to discrete optocoupler + isolated DC-DC designs, ADM2865EBRNZ cuts BOM count by ~10-15 parts, shrinks board area, and ensures matched propagation delay and CMTI performance validated by the manufacturer. Typical applications include industrial fieldbus nodes (Profibus, Modbus), solar inverter monitoring, motor control encoder links, building automation RS-485 trunks, and any 3 V/5 V MCU interface needing reinforced isolation to an outdoor or high-voltage bus. When designing in, place a 10 µF low-ESR capacitor on the controller-side VCC pin and a 10 µF capacitor on the isolated VISOOUT pin as recommended in the datasheet typical application. Do not exceed 25 Mbps if the bus is long (>10 m); derate data rate vs. cable length per RS-485 propagation guidelines. This page synthesizes distributor pricing, same-family alternatives, and practical PCB design guidance not found in the standalone datasheet, helping engineers select the right isolated RS-485 part for noise-sensitive industrial links.
ADM2867EBRNZ - 5.7kV Isolated RS-485 Transceiver | Analog Devices
The Analog Devices ADM2867EBRNZ is a 5.7 kV RMS signal and power isolated RS-485 transceiver with 25 Mbps data rate, integrated isoPower isolated DC-DC converter, and ±15 kV IEC ESD protection, housed in a 28-pin SOIC-W-FP wide-body package with >8.0 mm creepage and clearance. The device integrates a 1/1 full-duplex RS-485 transceiver on the field-side with a galvanically isolated power and data interface to the logic-side, eliminating the need for an external isolated DC-DC module on the bus side. An RS-485 transceiver is a differential line driver/receiver designed for robust half/full-duplex communication over twisted-pair cable in electrically noisy environments. Isolated RS-485 transceivers add a galvanic barrier between the local logic/host domain and the bus-side domain, breaking ground loops and protecting low-voltage controllers from large common-mode transients on long industrial cable runs. The ADM2867E family (ADM2861E/ADM2863E/ADM2865E/ADM2867E) is positioned by Analog Devices for industrial fieldbus nodes, motor-control encoder links, and renewable-energy inverter communications where integrated isolation simplifies the BOM. Key specifications include 5.7 kV RMS isolation per UL 1577 (signal + power channels), 25 Mbps maximum data rate, ±15 kV IEC 61000-4-2 ESD on the bus pins, and compliance with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987 (E). The integrated isoPower DC-DC converter supplies the bus-side driver from a single 3.3 V or 5 V logic supply on pin VIO/VCC, eliminating an external isolated supply. The wide-body SOIC package with >8.0 mm creepage supports installation on 230 V AC and 400 V DC system-level working voltages without further spacing treatment. The internal architecture combines an iCoupler digital isolation barrier (ADuM1411-style) with an isolated DC-DC controller and a low-EMI transformer driver, achieving EN 55032 Class B radiated-emissions compliance on a 2-layer PCB using only two small 0402-sized bypass capacitors. This makes the ADM2867EBRNZ attractive for space-constrained nodes where EMI filter area dominates the layout. Typical applications include solar inverter string-monitoring RS-485 buses, industrial PLC isolated communication ports, building-automation BACnet/MS-TP nodes, motor-drive encoder feedback isolation, and any RS-485 link requiring 5.7 kV reinforced isolation across the bus interface. The EVAL-ADM2867EEBZ evaluation board provides a 2-layer Class-B reference design for fast prototyping. When designing with the ADM2867EBRNZ, observe the >8.0 mm PCB creepage distance under the package body and avoid routing copper traces between the barrier pins to preserve rated isolation. The device replaces the need for an external isolated DC-DC plus an optocoupler-based digital isolator plus a discrete RS-485 transceiver, simplifying the BOM by 3 components on the field-side. This page synthesizes distributor pricing, AEO-optimized FAQs, drop-in alternatives, and practical design notes for the ADM2867EBRNZ that are not aggregated on the Analog Devices datasheet landing page.
ADM3050EBRWZ - 5.7kV Isolated CAN-FD Transceiver | Analog Devices
The ADM3050EBRWZ is a 5.7 kV rms isolated controller area network (CAN) physical layer transceiver from Analog Devices, designed for CAN and CAN FD applications. It integrates a 2-channel digital isolator and a CAN transceiver into a single 16-lead SOIC package using Analog Devices' iCoupler technology. The device fully meets the CAN flexible data rate (CAN FD) ISO 11898-2:2016 requirements and supports data rates up to 12 Mbps. A CAN transceiver is a physical layer device that connects a CAN controller to the differential bus lines (CANH and CANL). It converts the controller's logic-level signals to differential signals for transmission and vice versa for reception. In the system hierarchy, the ADM3050E sits between the CAN controller (often integrated in a microcontroller) and the twisted-pair bus, providing galvanic isolation to protect the controller and other low-voltage circuitry from high-voltage transients and ground potential differences. Key features include 5.7 kV rms isolation voltage, compliance with ISO 11898-2:2016, support for CAN FD data rates up to 12 Mbps, and a 5V supply voltage. The device is available in a 16-lead SOIC package (SOIC-16) and is RoHS compliant. It is designed for industrial automation, building control, and automotive applications where robust communication and isolation are critical. Technically, the ADM3050E uses iCoupler technology to combine isolation and transceiver functions, eliminating the need for external optocouplers and separate isolated power supplies. The device provides a fully isolated solution, with isolation between the CAN controller and the physical layer bus. It features a basic feature set, focusing on essential CAN communication without additional complexity. Typical applications include industrial fieldbus networks, motor control systems, HVAC control, and electric vehicle charging stations. The high isolation voltage and CAN FD support make it suitable for harsh environments where noise and ground loops are common. When designing with the ADM3050E, ensure proper PCB layout with adequate creepage and clearance distances for the isolation barrier. The device requires a 5V supply on both the logic side and the bus side, and external termination resistors may be needed depending on the bus configuration.
ADM3051BRWZ-RL7 - 5V ISO 11898 CAN Transceiver | ADI
ADM3051BRWZ-RL7 is an Analog Devices controller area network (CAN) physical layer transceiver that provides a robust interface between a CAN protocol controller and the two-wire CAN bus. It operates from a single 5 V VCC supply, complies with the ISO 11898 standard, and supports high-speed data rates up to 1 Mbps. The device is offered in an 8-lead SOIC package and is supplied in tape-and-reel packaging for high-volume assembly. What is a CAN transceiver? A controller area network (CAN) transceiver is an interface IC that converts logic-level signals from a CAN controller into the differential signals required on the CANH and CANL bus lines, and vice versa. It sits between the protocol controller and the physical twisted-pair bus, providing the required differential drive, receive sensitivity, and protection functions. In the system hierarchy, a CAN transceiver is part of the physical layer in a CAN network, below the data-link and application layers. The ADM3051 is a non-isolated, single-channel half-duplex transceiver intended for industrial and automotive networks where ISO 11898 compliant communication at up to 1 Mbps is required. Key features of ADM3051BRWZ-RL7 include short-circuit protection on CANH and CANL for shorts to power or ground in 24 V systems, operation with unpowered nodes that do not disturb the bus, and capability to connect 110 or more nodes. It also provides slope control on the RS pin to reduce radiated EMI, thermal shutdown protection, and a low-current standby mode for power-sensitive applications. These features make it a physically robust PHY for noisy or high-node-count environments. Technically, the ADM3051 is a CAN physical-layer IC in the Analog Devices ADM305x family. It uses a differential bus interface and includes bus fault protection and thermal shutdown in a single 8-pin SOIC package. The -RL7 suffix denotes 7-inch reel tape-and-reel packaging, and the BRWZ code indicates the lead-free (Z) SOIC (RW) package variant. The device is designed for 5 V-only systems, simplifying power supply design and enabling direct interface to 5 V CAN controllers without extra level shifting. Typical applications include industrial automation PLCs, automotive body electronic modules, building management system controllers, battery management systems, medical equipment and CAN data logging nodes. In each of these, the ADM3051's 1 Mbps speed, 110+ node bus capability, and short-circuit protection reduce risk of fieldbus faults while maintaining simple 5 V power architecture. When designing with ADM3051BRWZ-RL7, place a 120 ohm termination resistor between CANH and CANL at both ends of the bus and set the RS pin resistor to control the slew rate for EMI optimization. For best decoupling, use a 100 nF ceramic capacitor close to VCC and a bulk capacitor at the supply point.
ADM3052BRWZ-RL7 - Isolated CAN Transceiver 5kV | ADI
The Analog Devices ADM3052BRWZ-RL7 is an isolated Controller Area Network (CAN) physical layer transceiver with an integrated linear regulator, supplied in a 16-lead SOIC (SOIC-W) package on 7-inch tape and reel. It complies with ISO 11898 and uses Analog Devices iCoupler technology to combine a 3-channel digital isolator and a CAN transceiver in one package. The device supports data rates up to 1 Mbps and provides 5 kVrms signal isolation. An isolated CAN transceiver is an interface IC that places a galvanic isolation barrier between the logic-side CAN controller and the physical bus-side transceiver. In a CAN node, the controller sends TXD/RXD signals across the isolation barrier to the transceiver, which then drives the differential CANH and CANL bus lines. This prevents ground loops, common-mode voltages, and transient noise in industrial or automotive networks from disturbing the local microcontroller. The transceiver sits in the signal chain between the CAN controller and the twisted-pair bus, making isolation a key reliability requirement in harsh environments. Key features of the ADM3052 family include 5 kVrms isolation voltage, a 1/1 driver/receiver configuration, 1 Mbps ISO 11898-compliant data rate, and a logic-side supply of 3.3 V or 5 V. The integrated linear regulator enables bus-powered operation from a 24 V-class V+ rail, eliminating the need for a separate isolated DC-DC converter in many nodes. The 16-lead SOIC wide-body package supports surface-mount assembly and automated tape-and-reel production. From a design perspective, the ADM3052 integrates the isolation barrier, CAN transceiver, and LDO regulation into one package, simplifying PCB layout and reducing component count. The iCoupler technology provides common-mode transient immunity that is critical for reliable CAN communication in motor drives, battery packs, and factory-floor networks. Because the bus side can be powered directly from V+, the node can be designed as a two-wire bus-powered device in applications where a standalone isolated supply is not economically justified. Typical applications include automotive electronic control units, battery management systems, industrial CANopen networks, building automation, medical monitoring equipment, and test instrumentation. The combination of 5 kVrms isolation and bus-powered regulation makes the ADM3052 especially useful in distributed sensor nodes that must survive ground potential differences. When designing with this device, pay attention to the input voltage range and dropout of the integrated linear regulator, and place adequate bypass capacitance on the V+ and logic-side rails. The isolation barrier also requires proper PCB creepage and clearance to maintain the specified 5 kVrms withstand voltage.
ADM3072EARZ - 3.3V Half-Duplex RS-485/RS-422 Transceiver, 15kV ESD | Analog Devices
The Analog Devices ADM3072EARZ is a 3.3 V, low-power, half-duplex RS-485/RS-422 transceiver with ±15 kV ESD protection, supplied in an 8-pin SOIC_N (SO-8) package. It integrates one driver and one receiver and is designed for full- and half-duplex communication on multipoint bus transmission lines, supporting data rates up to 250 kbps per the ADM307xE family specification. A RS-485/RS-422 transceiver is a differential line interface IC that converts between a single-ended UART/logic signal on the controller side and a robust differential signal on the cable side. RS-485 belongs to the TIA/EIA-485 family of standards, supporting multipoint, half-duplex or full-duplex links over twisted pair at distances up to 1200 m. Transceivers in this category are essential building blocks of industrial fieldbus, motor control, building automation, and process-control networks, sitting in the hierarchy: transceiver -> line driver/receiver -> interface IC -> signal conditioning -> wired connectivity. Key features of the ADM3072E family include ±15 kV HBM ESD protection on the bus pins, true fail-safe receiver inputs that guarantee a logic-high output when the bus is open or shorted, hot-swap input structure on DE and RE for glitch-free board insertion, low power consumption, and 1/8 unit-load support that allows up to 256 nodes on the bus. The half-duplex pinout shares a single differential pair between driver and receiver. The device operates from a single 3.0 V to 3.6 V supply and includes thermal shutdown and current-limit protection on the driver outputs. Internal slew-rate limiting reduces EMI and reflections on unterminated or short backplanes. The combination of fail-safe, hot-swap, and 256-node fan-out makes the part well suited to long-cable, multi-drop industrial networks. Typical applications include industrial multipoint RS-485 networks, building automation and HVAC controllers, utility metering, motor control encoder/driver links, point-of-sale and access control panels, and any 3.3 V MCU/UART-to-RS-485 bridge. Pairing with a 3.3 V Cortex-M MCU (e.g., STM32, MAX32650, PIC32) provides a complete serial-port-to-fieldbus bridge. When designing with this transceiver, ensure the bus is terminated with a 120 Ω resistor at each end of the cable, keep the DE/RE pull-up/pull-down network well-bounded for hot-swap behaviour, and add TVS diodes (such as SMAJ6.8CA) for surge protection beyond the built-in ±15 kV HBM ESD rating. This page synthesizes distributor pricing, same-package drop-in alternatives (including ADM3070E, ADM3071E, ADM3073E, ADM3075E, ADM3076E and the MAX3072E cross-reference), and practical design notes not found in the manufacturer datasheet.
ADM3202ARNZ-REEL - 3.3V RS-232 2/2 Transceiver | Analog Devices
The Analog Devices ADM3202ARNZ-REEL is a low-power, 2-driver/2-receiver RS-232 line transceiver that operates from a single +3.3 V supply, supports data rates up to 460 kbps, and uses four external 0.1 uF charge pump capacitors, housed in a 16-lead SOIC_N (3.90 mm width) package supplied on tape and reel. An RS-232 transceiver is an interface IC that converts logic-level UART signals (TTL/CMOS, typically 0 V to 3.3 V) into the wider voltage swings specified by the EIA-232E and CCITT V.28 standards, and vice versa. Within the signal chain hierarchy, it belongs to the transceiver class of drivers/receivers under Interface ICs, bridging microcontrollers, processors, or UARTs to legacy serial ports, industrial equipment, and point-of-sale hardware. Key features include single-supply 3.3 V operation with an on-chip charge pump voltage doubler/inverter, conformance to EIA-232E and V.28 specifications, high-speed operation up to 460 kbps, and small 0.1 uF external charge pump capacitors that reduce board area and bill-of-materials cost compared to older parts requiring 1 uF or larger capacitors. Technically, the ADM3202 integrates two charge pump stages (doubler and inverter) to generate approximately +/-6 V RS-232 rails from the 3.3 V supply. The drivers deliver guaranteed EIA-232E output levels, and the receivers include internal input pull-ups so that unconnected receiver inputs default to a known mark state. The ADM3202 variant has no shutdown pin; the related ADM3222 and ADM1385 add a low-power shutdown facility for battery applications. Typical applications include industrial equipment serial ports, embedded systems with RS-232 debug or console links, point-of-sale terminals, battery-powered portable instrumentation (with ADM3222 variants), and any 3.3 V microcontroller design interfacing to legacy RS-232 equipment. Design considerations: place the four 0.1 uF charge pump capacitors as close as possible to the device pins and observe datasheet polarity for the flying capacitors; ensure the supply can support the transient charge pump current during data transmission. This page synthesizes distributor pricing, drop-in alternatives, pinout, and practical design notes not found in a single manufacturer datasheet, as of 2026-09-13.
ADM3202ARNZ-REEL7 - 3.3V RS-232 2/2 Transceiver 460kbps | ADI
The Analog Devices ADM3202ARNZ-REEL7 is a low-power, 2-driver/2-receiver RS-232/V.28 line transceiver that operates from a single +3.3 V supply, supports data rates up to 460 kbps, and uses only four external 0.1 uF charge pump capacitors, housed in a 16-pin SOIC (0.154 in / 3.90 mm width) package supplied on tape and reel. An RS-232 transceiver is an interface IC that converts logic-level UART signals (TTL/CMOS, typically 0 V to 3.3 V) to the higher voltage swings defined by the EIA-232E and ITU V.28 standards, and vice versa. Within the signal-chain hierarchy, it belongs to the interface IC family alongside RS-485, CAN and USB transceivers, and sits between a microcontroller UART and a physical D-sub serial port. Because RS-232 rails can swing to +/-5 V or more, an integrated charge pump (voltage doubler and inverter) is required when only a single low-voltage supply is available. Key features of the ADM3202 include guaranteed 460 kbps operation for high-speed serial links, operation from a 3 V to 5.5 V supply range per distributor parametric data, EIA-232E/V.28 conformance, and a small external capacitor requirement of only 4 x 0.1 uF, which reduces board area and BOM cost. The complementary ADM3222/ADM1385 family members add a low-power shutdown facility for battery-powered portable instruments. Technically, the device uses CMOS charge-pump technology with integrated driver and receiver channels. The charge doubler generates V+ and the inverter generates V- from the 3.3 V rail, enabling true RS-232 output levels without a dual supply. Receivers incorporate hysteresis and tolerate input voltages up to +/-30 V, improving noise immunity on long cables. Typical applications include industrial point-of-sale equipment, networking and communication equipment serial management ports, embedded systems console/debug ports, and battery-powered portable instruments with RS-232 connectivity. Design considerations: place the four 0.1 uF charge pump capacitors as close as possible to pins 1-6, and use at least 0.1 uF of supply decoupling on VCC; note the ADM3202 itself lacks the shutdown pin available on the ADM3222 variant. This page synthesizes distributor availability, drop-in alternatives, pinout detail and design notes beyond what a single datasheet provides.
ADM3251EARWZ - 2.5kV Isolated RS-232 Transceiver, 460kbps | ADI
The Analog Devices ADM3251EARWZ is a 2.5 kV rms fully isolated, single-channel RS-232/V.28 transceiver housed in a 20-pin SOIC (7.5 mm body width) wide-body package with integrated isoPower dc-to-dc converter. It operates from a single 5 V supply, supports data rates up to 460 kbps, and delivers 25 kV/µs common-mode transient immunity (CMTI) across the reinforced isolation barrier. An RS-232 transceiver is a line interface IC that converts CMOS/TTL logic levels (0-5 V) into EIA/TIA-232E voltage swings (±5 V to ±15 V) required by legacy serial-port peripherals such as industrial PLCs, point-of-sale terminals, and instrumentation. A fully isolated variant such as the ADM3251EARWZ adds galvanic isolation (here 2.5 kV rms) between the logic-side UART and the cable-side driver/receiver, breaking ground loops and protecting low-voltage MCUs from large common-mode transients and ESD events on the bus. Key specifications include ±15 kV ESD protection (HBM) on the RIN and TOUT pins, integrated charge-pump that requires only four external 0.1 µF capacitors, low-power shutdown mode, and an exposed pad for thermal dissipation. The chip conforms to EIA/TIA-232E and ITU-T V.28 standards, ensuring interoperability with any standard RS-232 host or peripheral. Architecturally, the device combines an iCoupler digital-isolation data path with an isoPower transformer-based DC-DC converter that derives the ±RS-232 supplies internally, eliminating the need for a separate isolated supply on the cable side. This single-chip isolation approach reduces PCB area versus discrete isolator-plus-transceiver designs and simplifies regulatory compliance for medical, industrial, and renewable-energy systems. Typical applications include isolated serial ports in PLCs and motor drives, point-of-sale terminals, medical patient monitors, solar inverter diagnostics, and any RS-232 link requiring robust ground-loop immunity. When designing with this device, allocate the four 0.1 µF charge-pump capacitors close to the V+ and V- pins, and provide a low-ESR decoupling cap on VDD. Verify creepage and clearance on the PCB to maintain the 2.5 kV rms rating. This page synthesizes distributor pricing, drop-in alternatives, and design notes not found in the manufacturer datasheet.
ADM483EARZ-REEL - 5V ±15kV ESD RS-485 Transceiver | Analog Devices
The Analog Devices ADM483EARZ-REEL is a 5 V, slew-rate-limited, half-duplex RS-485/RS-422 transceiver with ±15 kV ESD protection on the bus pins, supplied in an 8-pin SOIC_N (SO-8) package. It delivers 250 kbps data rate, supports up to 32 nodes on a single bus, and draws only 36 µA supply current, making it a low-power solution for industrial multipoint networks. A transceiver in the RS-485/RS-422 category is a differential line driver/receiver IC that converts a single-ended TTL/CMOS logic signal into a balanced differential signal (and vice versa) for transmission over twisted-pair media. RS-485 transceivers sit at the physical layer of multipoint fieldbus architectures and are widely used because they tolerate large common-mode voltages (-7 V to +12 V) and support long cable runs, with the TIA/EIA-485-A standard allowing up to 32 unit loads on a single bus. Key features include ±15 kV HBM ESD protection per IEC 61000-4-2 air-discharge testing on the bus pins, reduced slew rate to minimize EMI, a single 5 V ±10% supply, open-circuit fail-safe receiver design, thermal shutdown, short-circuit protection on the driver outputs, and a half-duplex (1/1) topology where driver and receiver share the same differential pair. The combination of low quiescent current and integrated ESD protection eliminates external TVS arrays in most designs. The device uses a BiCMOS process that integrates the differential driver, differential receiver, charge pump for fail-safe biasing, and ESD clamp structures on a single die. The reduced-slew-rate driver edges contain common-mode harmonics above 2 MHz, simplifying FCC Class B and EN 55022 EMI compliance on cables up to several hundred meters. Typical applications include industrial fieldbus nodes (Modbus, Profibus DP, BACnet), HVAC and building automation networks, motor and motion control links, smart-grid metering, point-of-sale terminals, and any 5 V MCU/UART-to-RS-485 interface requiring robust ESD protection. Designers should note that the ADM483E shares its bus pinout with industry-standard 8-pin half-duplex RS-485 pinouts such as the MAX485, LTC485, and SP485E, enabling direct footprint compatibility when migrating between families for ESD, speed, or supply current optimization.
ADM485ARZ-REEL - 5V 5Mbps Half-Duplex RS-485/RS-422 Transceiver | Analog Devices
The Analog Devices ADM485ARZ-REEL is a 5 V low-power EIA RS-485/RS-422 differential line transceiver in an 8-pin SOIC (SO-8) package, supporting half-duplex communication at data rates up to 5 Mbps. It provides one driver and one receiver per channel, with dedicated differential line driver outputs and receiver inputs that comply with both EIA RS-485 and RS-422 standards for balanced multipoint bus transmission. An RS-485 transceiver is a physical-layer interface IC that converts a single-ended TTL/CMOS logic signal into a differential signal transmitted across a twisted-pair cable, then converts the differential signal back into a single-ended logic signal at the receiver. This differential signaling rejects common-mode noise and allows reliable communication over cable lengths up to 1200 m, making RS-485 the most common wired bus for industrial multipoint networks. RS-485 transceivers fall under the broader category of interface ICs in the data-communication PHY layer. Key features of the ADM485ARZ-REEL include 5 Mbps signaling rate, low power consumption suitable for 5 V single-supply operation, independent driver/receiver enable pins, thermal-shutdown protection, current limiting on the driver outputs, and receiver fail-safe for an open, shorted, or idle bus. The wide common-mode range of -7 V to +12 V exceeds the EIA-485 requirement of -7 V to +12 V, allowing robust operation in electrically noisy industrial environments. Technically, the ADM485 uses a bipolar CMOS process with a 1 driver + 1 receiver half-duplex topology. Minimal driver propagation delays permit high-speed transmission while low skew minimizes EMI emissions - a key consideration when the part is placed near sensitive analog circuits inside PLCs and motor drives. Designed for industrial multipoint bus transmission, telematics, and embedded networking, the ADM485ARZ-REEL fits any application where multiple nodes must communicate reliably over a single twisted pair: factory-floor PLC links, building-automation networks, security and surveillance panels, and HVAC fieldbus nodes. The 8-pin SOIC footprint is industry-standard for RS-485 PHYs, simplifying PCB layout and second-sourcing. A key design tip: place 100 ohm termination only at the two physical ends of the bus; stub lengths must be kept short to suppress signal integrity issues at 5 Mbps. The RE/DE pins allow hardware-driven direction control; tie RE high and use DE to switch direction if the host UART does not natively manage bus direction. This page synthesizes distributor pricing, drop-in same-package alternatives, and SOIC-8 PCB layout guidance not aggregated into the manufacturer datasheet.
ADN4624BCPZ - Quad 2.5Gbps LVDS Isolator | Analog Devices
The ADN4624BCPZ is a quad-channel, signal-isolated, low-voltage differential signaling (LVDS) buffer from Analog Devices that operates at data rates up to 2.5 Gbps with very low jitter. It integrates Analog Devices' iCoupler technology, enhanced for high-speed operation, to provide drop-in galvanic isolation of LVDS signal chains. The device is available in a 32-lead WFQFN exposed pad package (LFCSP) and supports a wide supply range of 1.7 V to 1.9 V on both VDD1 and VDD2, with a typical supply of 1.8 V. It provides 5700 Vrms isolation voltage and a common-mode transient immunity (CMTI) of 40 kV/µs, making it suitable for industrial and medical applications where robust isolation is critical. A digital isolator is a device that transfers digital signals across an isolation barrier, typically using capacitive, inductive, or optical coupling, to protect sensitive circuitry from high voltages, ground loops, and noise. In the hierarchy of signal conditioning, a digital isolator sits between the digital signal source and the receiving logic, ensuring signal integrity and safety. The ADN4624BCPZ specifically isolates LVDS signals, which are differential, low-voltage, high-speed signals used in applications like data acquisition, industrial networking, and medical imaging. Key features of the ADN4624BCPZ include four isolated LVDS channels (4+0 configuration), a data rate of 2.5 Gbps per channel, and very low jitter, which is essential for high-speed serial links. The device also features a refresh mechanism that monitors input and output states to ensure they remain the same in the absence of data transitions, such as at power-on. The 1.8 V supplies for the LVDS and isolator circuits enable low power consumption while maintaining high-speed operation. Technically, the ADN4624BCPZ uses iCoupler technology, which employs chip-scale transformers to couple signals across the isolation barrier. This approach provides superior performance compared to optocouplers in terms of speed, power, and reliability. The device is designed to meet the stringent requirements of industrial automation, motor control, and medical equipment, where isolation and signal integrity are paramount. Typical applications include isolated LVDS interfaces in data acquisition systems, industrial fieldbus networks, and medical imaging equipment. The ADN4624BCPZ is also used in test and measurement instruments where high-speed data transfer with galvanic isolation is required. When designing with this device, ensure that the supply voltages are within the specified range and that proper decoupling capacitors are placed close to the VDD pins. The exposed pad should be soldered to the PCB ground plane for optimal thermal performance. Also, consider the CMTI rating when operating in environments with high voltage transients.
ADN4624BCPZ-RL7 - Quad LVDS Isolator 2.5Gbps | Analog Devices
The ADN4624BCPZ-RL7 is a quad-channel, signal-isolated, low-voltage differential signaling (LVDS) buffer from Analog Devices that operates at data rates up to 2.5 Gbps with very low jitter. It integrates Analog Devices' iCoupler technology, enhanced for high-speed operation to provide drop-in galvanic isolation of LVDS signal chains. The device is available in a 32-lead WFQFN exposed pad package (CSP) and provides 5.7 kV rms isolation voltage with a common-mode transient immunity (CMTI) of 40 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. In the hierarchy of isolation components, a digital isolator is a type of signal isolator, which falls under the broader category of isolation components used in power management and signal conditioning. The ADN4624 specifically isolates LVDS signals, which are differential, low-voltage, high-speed signals commonly used in high-speed data transmission. Key features include four isolated LVDS channels (4+0 configuration), support for 1.7 V to 1.9 V supply voltages on both sides (VDD1 and VDD2), and an operating temperature range of -40°C to +125°C. The device ensures very low jitter, making it suitable for high-speed serial links where signal integrity is critical. The 5.7 kV rms isolation rating provides robust protection against voltage transients and ground potential differences. Technically, the ADN4624 uses iCoupler technology, which employs chip-scale transformers to transmit data across the isolation barrier, offering advantages over optocouplers in terms of speed, power consumption, and reliability. The device supports AC coupling and/or level shifting to LVDS receivers and from LVDS drivers, simplifying interface design. The 32-lead WFQFN package with exposed pad aids in thermal management and is suitable for space-constrained applications. Typical applications include isolated high-speed data acquisition systems, industrial fieldbus interfaces, medical equipment requiring patient isolation, and communication backplanes. The device is ideal for systems where high-speed data must cross an isolation barrier without compromising signal integrity. When designing with the ADN4624, ensure proper PCB layout with adequate spacing for isolation, and place decoupling capacitors close to the VDD1 and VDD2 pins. The exposed pad should be connected to the appropriate ground plane for thermal performance.
ADUM1201ARZ - Dual 2500Vrms 1Mbps Isolator | Analog Devices
The ADUM1201ARZ is a dual-channel digital isolator from Analog Devices, Inc., based on the proprietary iCoupler technology. It provides 2500Vrms isolation with a data rate of 1Mbps and a common-mode transient immunity (CMTI) of 25kV/µs. The device is housed in an 8-pin SOIC (0.154", 3.90mm width) package, making it suitable for space-constrained applications. It operates with a supply voltage range of 3.0V to 5.5V on both sides, allowing flexible interfacing with different logic levels. A digital isolator is a component that provides electrical isolation between two circuits while allowing digital signals to pass across the isolation barrier. Unlike optocouplers, which use LEDs and photodiodes, iCoupler devices use monolithic transformers and high-speed CMOS to achieve isolation. This approach eliminates the uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects associated with optocouplers. Digital isolators are essential in applications where ground potential differences, noise, or safety requirements demand galvanic isolation, such as in industrial automation, medical equipment, and communication systems. Key features of the ADUM1201ARZ include its dual-channel configuration with 1/1 channel directionality, meaning one channel transmits data in each direction. The device supports data rates up to 1Mbps, making it suitable for low-to-moderate speed communication interfaces like SPI, UART, and GPIO isolation. The 25kV/µs CMTI ensures reliable operation in noisy environments, preventing false triggering due to fast transients. The iCoupler technology also consumes significantly less power than optocouplers, with typical quiescent current in the microampere range. The ADUM1201ARZ features a patented refresh mechanism that ensures DC correctness in the absence of input logic transitions and during power-up/power-down conditions. This is critical for maintaining the integrity of static signals across the isolation barrier. The device is available in both standard and automotive-grade versions, with the ADUM1201W variants qualified for 125°C operation. The 8-pin SOIC package is widely used and easy to integrate into existing PCB designs. Typical applications include isolating SPI and UART interfaces in industrial control systems, providing isolation in medical monitoring equipment, and protecting sensitive electronics in communication infrastructure. The device is also used in power supply control and motor drive circuits where high-voltage transients are present. Its small footprint and low power consumption make it ideal for portable and battery-powered devices. When designing with the ADUM1201ARZ, it is important to ensure proper power supply decoupling on both sides of the isolation barrier. Place 0.1µF capacitors close to the VDD1 and VDD2 pins to minimize noise. Additionally, consider the maximum data rate and CMTI requirements of your application to ensure the device meets your performance needs.
ADUM1201ARZ-RL7 - Dual-Channel Digital Isolator 2500Vrms | Analog Devices
The Analog Devices ADUM1201ARZ-RL7 is a dual-channel digital isolator based on the proprietary iCoupler technology, providing 2500Vrms galvanic isolation with a 1Mbps data rate and 25kV/µs common-mode transient immunity (CMTI). It is housed in an 8-SOIC (0.154", 3.90mm width) package, operates over a 3.0V to 5.5V supply range on both sides, and is rated for -40°C to +125°C operation. A digital isolator is a component that transfers digital signals across a galvanic isolation barrier without allowing direct current flow. Unlike optocouplers, which use LEDs and photodiodes, iCoupler devices use monolithic transformers and high-speed CMOS to achieve higher data rates, lower power consumption, and more stable performance over temperature and lifetime. Digital isolators are essential in systems where ground potential differences, noise, or safety requirements demand isolation, such as in industrial automation, medical equipment, and data acquisition. Key features of the ADUM1201ARZ-RL7 include 1/1 channel directionality (one forward channel and one reverse channel), which is ideal for bidirectional communication. The device delivers 2500Vrms isolation voltage, 1Mbps data rate, and 25kV/µs CMTI, ensuring reliable operation in noisy environments. The wide supply range supports both 3.3V and 5V logic levels, and the typical quiescent current is only 1.3mA per channel, making it suitable for power-sensitive applications. Technically, the ADuM1201 combines high-speed CMOS and monolithic transformer isolation in an 8-lead SOIC package. This architecture eliminates the need for external drivers and discrete components, reducing board space and improving reliability. Unlike optocouplers, iCoupler technology does not suffer from current transfer ratio degradation, providing stable isolation performance throughout the product lifetime. Typical applications include industrial automation for isolating field buses and sensor interfaces, medical devices where patient safety requires galvanic isolation, and data acquisition systems to prevent ground loops and noise. It is also used in power supply control, motor drives, and communication interfaces. When designing with this device, place bypass capacitors close to the VDD1 and VDD2 pins and maintain proper PCB spacing across the isolation barrier to preserve creepage and clearance requirements. The high CMTI rating makes the part robust in fast-switching environments, but careful layout is still required to maximize isolation performance.
ADUM1201BRZ - 2-Ch Digital Isolator 10Mbps | Analog Devices
The ADUM1201BRZ is a dual-channel digital isolator from Analog Devices, based on the proprietary iCoupler technology. It provides 2500Vrms isolation with a data rate of 10Mbps and a common-mode transient immunity (CMTI) of 25kV/µs. The device is housed in an 8-pin SOIC (0.154", 3.90mm width) package, making it suitable for space-constrained applications. It operates over a supply voltage range of 2.7V to 5.5V on both sides, allowing flexible interfacing with different logic levels. A digital isolator is a component that provides electrical isolation between two circuits while allowing digital signals to pass across the isolation barrier. Unlike optocouplers, which use LEDs and photodiodes, iCoupler devices use monolithic transformers and high-speed CMOS, eliminating concerns about current transfer ratio (CTR) degradation, nonlinear transfer functions, and temperature/lifetime effects. This results in more stable performance and lower power consumption—iCoupler devices consume about one-tenth the power of comparable optocouplers. Key features of the ADUM1201BRZ include a bidirectional channel configuration (1/1 directionality), a maximum data rate of 10Mbps, and a CMTI of 25kV/µs, which ensures reliable operation in noisy industrial environments. The device also offers a wide operating temperature range of -40°C to +105°C, making it suitable for harsh applications. The SOIC-8 package is industry-standard, enabling easy PCB layout and drop-in replacement in many designs. Technically, the ADUM1201BRZ uses a 2.7V to 5.5V supply range on both VDD1 and VDD2, with a maximum quiescent current of 2.6mA per channel. The propagation delay is typically 50ns, and the pulse width distortion is 3ns, ensuring accurate signal transmission. The device is certified to UL1577, IEC 60747-5-5, and CSA standards, providing robust isolation ratings. Typical applications include industrial fieldbus isolation, motor drives, battery monitoring, hybrid electric vehicles, and digital isolation in power supplies. The ADUM1201BRZ is particularly well-suited for isolating SPI, UART, and other serial interfaces where high-speed data transfer and reliable isolation are required. When designing with this device, ensure that the bypass capacitors (0.1µF) are placed close to the VDD pins to minimize noise. Also, consider the maximum data rate and CMTI requirements of your application to ensure the device meets your performance needs.
ADUM1201BRZ-RL7 - Dual-Channel Digital Isolator | Analog Devices
The ADUM1201BRZ-RL7 is a dual-channel digital isolator from Analog Devices, based on the proprietary iCoupler technology. It provides galvanic isolation up to 2500Vrms, with a data rate of 10Mbps and a common-mode transient immunity (CMTI) of 25kV/µs. The device is housed in an 8-pin SOIC (0.154", 3.90mm width) package, making it suitable for space-constrained applications. 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 systems where safety, noise immunity, or ground potential differences are concerns. The ADUM1201BRZ-RL7 uses monolithic transformer technology, which offers superior performance compared to traditional optocouplers, including higher data rates, lower power consumption, and better reliability. Key features of the ADUM1201BRZ-RL7 include its 1/1 channel directionality (one forward, one reverse), a wide supply voltage range of 3.0V to 5.5V, and a propagation delay of typically 50ns. The device also features a high CMTI of 25kV/µs, ensuring reliable operation in noisy industrial environments. Its low power consumption and small package make it ideal for battery-powered and portable applications. The ADUM1201BRZ-RL7 is designed using Analog Devices' iCoupler technology, which integrates micro-transformers and high-speed CMOS circuits on a single chip. This architecture eliminates the need for external components and provides a robust isolation solution. The device meets various safety standards, including DIN EN 60950, and is RoHS compliant. Typical applications include motor drives, battery monitors, hybrid electric vehicles, and digital fieldbus isolation. In motor drives, the isolator protects control circuits from high-voltage transients. In battery monitoring, it ensures safe communication between cells and the controller. The device's high CMTI and data rate make it suitable for industrial automation and communication interfaces. When designing with the ADUM1201BRZ-RL7, it is important to ensure proper PCB layout to maintain isolation performance. Keep the isolation barrier clear of copper traces and place decoupling capacitors close to the supply pins. Also, consider the propagation delay and timing requirements of your system to avoid data corruption.
ADUM121N0WBRZ-RL7 - 150Mbps Dual Digital Isolator, 3kV | Analog Devices
The Analog Devices ADUM121N0WBRZ-RL7 is a dual-channel digital isolator based on Analog Devices' iCoupler technology, providing 3000 Vrms isolation and 150 Mbps data rate in an 8-pin SOIC-N (NSOIC) wide-body package. It uses a 1/1 channel configuration (one forward, one reverse) and combines CMOS with monolithic air-core transformer technology to deliver superior performance versus optocouplers. The device operates from 1.7 V to 5.5 V on both sides and supports 100 kV/us common-mode transient immunity (CMTI). A digital isolator is a semiconductor device that transfers digital signals between two circuit domains while providing galvanic isolation - a safety barrier that blocks DC and low-frequency fault currents while allowing high-speed data to pass through transformer, capacitive, or optical coupling. iCoupler technology integrates a chip-scale air-core transformer on a CMOS die, replacing the LED/photodiode stack used in optocouplers. Compared with optocouplers, iCoupler parts like the ADuM121N offer 10x to 100x faster data rates, tighter pulse-width distortion, lower power, and no LED-degradation aging effects. Digital isolators sit in the signal-conditioning block between sensors/MCUs and the rest of the system. Key features of the ADuM121N0WBRZ-RL7 include 25 ns typical propagation delay, 2 ns typical pulse-width distortion, 4 mA per-channel supply current at 3.3 V, and 100 kV/us minimum CMTI. The wide-body SOIC package provides the 3 kVrms reinforced isolation needed for industrial and renewable-energy applications while exposing the part to standard 8-pin SMD assembly. The -RL7 suffix denotes a 7-inch tape-and-reel packaging for high-volume production. From an architectural standpoint, the ADuM121N uses a differential transformer coupling path with on-chip encoding that refreshes the input state on every clock cycle, eliminating the run-length limitations of competing edge-based architectures. The wide supply range (1.7 V to 5.5 V) allows direct connection to 1.8 V, 2.5 V, 3.3 V, or 5 V logic without level shifters, simplifying mixed-voltage isolation. The 150 Mbps data rate supports SPI, I2C (via bit-banging), RS-485, and high-speed GPIO up to about 10 MHz NRZ. Typical applications include isolated SPI interfaces for motor drives, isolated gate-drive signal paths in solar inverters, RS-485/RS-232 isolation in industrial PLCs, isolated ADC front-ends for medical and test equipment, and digital control links in EV battery management systems. Designers favor this part when 3 kVrms isolation, high CMTI, and 150 Mbps throughput must coexist in a wide-body SOIC footprint. When designing with the ADuM121N0WBRZ-RL7, place decoupling capacitors (typically 0.1 uF) on both VDD1 and VDD2 within 2 mm of the supply pins, and route the input/output traces on opposite sides of the isolation barrier to maintain creepage. Confirm that PCB layout preserves the 4 mm minimum clearance required by the 8-SOIC wide-body package for 3 kVrms reinforced isolation.
ADUM1250ARZ - Hot Swappable Dual I2C Isolator | Analog Devices
The ADUM1250ARZ is a hot-swappable, dual-channel digital isolator from Analog Devices, specifically designed for bidirectional I2C communication. It provides 2500Vrms isolation with a data rate of 1Mbps and a common-mode transient immunity (CMTI) of 25kV/µs. The device is housed in an 8-lead SOIC package (0.154", 3.90mm width) and operates from a 3.0V to 5.5V supply, making it suitable for a wide range of isolated I2C 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 ADUM1250ARZ uses Analog Devices' proprietary iCoupler chip-scale transformer technology, which offers advantages over traditional optocouplers, including higher data rates, lower power consumption, and better reliability. Key features of the ADUM1250ARZ include nonlatching, bidirectional communication channels that are compatible with I2C interfaces, eliminating the need to split I2C signals into separate transmit and receive lines. It supports hot-swap capability, allowing insertion or removal of boards without powering down the system. The device also features open-drain outputs with 30mA current sink capability, ensuring compatibility with standard I2C bus specifications. Technically, the ADUM1250ARZ provides two bidirectional channels, supporting a complete isolated I2C interface. It has a maximum data rate of 1Mbps, which is sufficient for standard and fast-mode I2C. The isolation barrier is rated at 2500Vrms, providing robust protection against voltage transients. The device operates over a temperature range of -40°C to +125°C, making it suitable for industrial environments. Typical applications include isolated I2C buses in industrial automation, medical equipment, power management systems, and communication interfaces. The ADUM1250ARZ is also used in hot-swap applications where boards need to be replaced without interrupting system operation. When designing with the ADUM1250ARZ, it is important to ensure proper decoupling of the power supply pins and to follow the recommended layout guidelines to maintain isolation performance. The device is RoHS compliant and available in tape and reel packaging.
ADUM1250ARZ-RL7 - I2C Digital Isolator 2500Vrms | Analog Devices
The ADUM1250ARZ-RL7 is a hot-swappable, dual-channel digital isolator from Analog Devices, specifically designed for I2C interfaces. It provides two bidirectional channels, enabling a complete isolated I2C interface without the need to split signals into separate transmit and receive paths. The device is housed in an 8-pin SOIC package (0.154", 3.90mm width) and offers 2500Vrms isolation, a data rate of 1Mbps, and a common-mode transient immunity (CMTI) of 25kV/µs. Digital isolators are components that transfer digital signals across an isolation barrier, providing galvanic isolation to protect circuits from high voltages, ground loops, and noise. They are essential in industrial, medical, and communication systems where safety and signal integrity are paramount. The ADUM1250ARZ-RL7 belongs to the family of I2C isolators, which are specialized for bidirectional communication protocols like I2C. Key features include non-latching, bidirectional communication channels compatible with I2C interfaces, hot-swap capability, and a wide operating temperature range. The device supports data rates up to 1Mbps, making it suitable for standard and fast-mode I2C. Its high CMTI of 25kV/µs ensures reliable operation in noisy environments, and the 2500Vrms isolation rating provides robust protection. Technically, the ADUM1250ARZ-RL7 uses Analog Devices' iCoupler technology, which employs chip-scale transformers instead of optocouplers, offering higher reliability, lower power consumption, and better performance. The device operates from a 3.0V to 5.5V supply on both sides, and its hot-swap feature allows insertion or removal without disrupting the bus. Typical applications include isolated I2C buses in industrial automation, medical equipment, and power management systems. It is also used in battery management, motor control, and any system requiring galvanic isolation for I2C communication. When designing with this device, ensure proper decoupling on both supply pins and maintain adequate creepage distances on the PCB to meet isolation requirements. The hot-swap feature should be considered in system design to avoid bus contention during power-up.
ADUM1251ARZ - I2C Digital Isolator 2500Vrms | Analog Devices
The ADUM1251ARZ is a hot-swappable, bidirectional I2C digital isolator from Analog Devices, offering 2500Vrms isolation and a data rate of 1Mbps. It comes in an 8-pin SOIC package and operates over a supply range of 3V to 5.5V. This device integrates two channels with non-latching communication, simplifying I2C isolation without splitting signals into separate transmit and receive paths. Digital isolators are components that provide galvanic isolation between two circuits while allowing digital signals to pass. They are essential in systems where ground potential differences or noise could disrupt communication, such as in industrial automation, medical equipment, and power management. The ADUM1251ARZ specifically supports I2C, a widely used two-wire bus, making it a key building block in mixed-voltage and isolated systems. Key features include a common-mode transient immunity (CMTI) of 25kV/µs, ensuring reliable operation in noisy environments. The device supports hot-swap capability, allowing insertion or removal without powering down the bus. Its bidirectional channels are I2C-compatible on Side 2 and I2C-compatible on Side 1, with modified thresholds for compatibility. The propagation delay is 162ns, and the device is available in both tube and tape-and-reel packaging. Technically, the ADUM1251ARZ uses Analog Devices' iCoupler technology, which employs chip-scale transformers instead of optocouplers, offering higher reliability and lower power consumption. The device is specified over the industrial temperature range of -40°C to +125°C, making it suitable for harsh environments. It is RoHS compliant and lead-free. Typical applications include isolating I2C buses in industrial control systems, medical monitoring equipment, and power supply management. The device is also used in battery management systems and automotive electronics where isolation is required for safety and noise immunity. When designing with the ADUM1251ARZ, ensure proper decoupling with 0.1µF capacitors on both supply pins and maintain adequate PCB layout to minimize parasitic capacitance. The hot-swap feature requires careful consideration of bus capacitance and pull-up resistor values to avoid glitches during insertion.
ADUM1251ARZ-RL7 - Hot-Swappable Dual I2C Isolator | Analog Devices
The ADUM1251ARZ-RL7 is a hot-swappable, dual-channel digital isolator from Analog Devices, specifically designed for bidirectional I2C communication. It provides 2500Vrms isolation with a data rate of 1Mbps and a common-mode transient immunity (CMTI) of 25kV/µs. The device operates from a 3.0V to 5.5V supply and is available in an 8-lead SOIC package, making it suitable for space-constrained designs. Digital isolators are components that transfer digital signals across an isolation barrier, typically using capacitive or magnetic coupling, to protect sensitive circuitry from high voltages, noise, and ground potential differences. They replace optocouplers in many applications due to their superior speed, reliability, and integration. The ADUM1251ARZ-RL7 belongs to the iCoupler family, which uses chip-scale transformer technology for isolation. Key features include bidirectional I2C communication without the need for direction control, open-drain interfaces, 30mA current sink capability, and support for hot-swap applications. The device is qualified for automotive applications and operates over a temperature range of -40°C to +125°C. It is RoHS compliant and available in tape and reel packaging. The ADUM1251ARZ-RL7 uses Analog Devices' iCoupler technology, which integrates micro-transformers and high-speed CMOS circuits to achieve reliable isolation. This architecture provides low propagation delay and high CMTI, ensuring robust performance in noisy industrial environments. The device also features non-latching, bidirectional channels, simplifying I2C bus isolation. Typical applications include I2C bus isolation in industrial automation, power management systems, and automotive electronics. It is also used in medical devices and instrumentation where galvanic isolation is required for safety. The device's hot-swap capability allows insertion and removal of boards without disrupting the bus. When designing with the ADUM1251ARZ-RL7, ensure proper decoupling with 0.1µF capacitors on both supply pins. The Side 1 interface is I2C compatible, while Side 2 is fully I2C compliant, so verify the logic levels of connected devices. For high-speed operation, follow the layout guidelines in AN-1109 to minimize emissions.
ADUM1300ARWZ - 3-Ch Digital Isolator 2500Vrms | Analog Devices
The ADUM1300ARWZ is a triple-channel digital isolator from Analog Devices, based on the proprietary iCoupler® technology. It provides 2500Vrms isolation with three unidirectional channels, supporting data rates up to 1Mbps and a common-mode transient immunity (CMTI) of 25kV/µs. The device is housed in a 16-lead SOIC-W (0.295" width) package, suitable for surface-mount assembly. Digital isolators are components that transmit digital signals across an isolation barrier, providing galvanic isolation to protect circuits and users from high voltages, ground loops, and noise. They replace optocouplers in many applications, offering higher speed, better reliability, and lower power consumption. The ADUM1300ARWZ is part of the iCoupler family, which uses monolithic transformer technology to achieve superior performance compared to traditional optocouplers. Key features include three independent isolation channels, a wide supply voltage range of 3.0V to 5.5V, and a maximum data rate of 1Mbps. The device offers 25kV/µs CMTI, ensuring reliable operation in noisy industrial environments. It also features low power consumption, with typical quiescent current of 1.3mA per channel, and operates over a temperature range of -40°C to +105°C. The ADUM1300ARWZ uses a magnetic coupling architecture, where data is transmitted across a thin isolation barrier using integrated transformers. This approach eliminates the need for LEDs and photodiodes, improving performance and reliability. The device includes a refresh mechanism to maintain output states even when the input is static, ensuring correct operation in all conditions. Typical applications include industrial fieldbus communication, motor control, power inverters, and isolated SPI/UART interfaces. The high CMTI and 2500Vrms isolation make it suitable for harsh environments where noise and voltage transients are common. When designing with this device, ensure proper PCB layout with adequate creepage and clearance distances for the isolation rating. Place decoupling capacitors close to the VDD pins and follow the recommended layout guidelines in the datasheet to achieve optimal performance.