ADM2482EBRWZ - 2.5kV Isolated RS-485/RS-422 Transceiver | ADI
N.º de pieza: ADM2482EBRWZ ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $17.57 | $17,57 |
| 10 | $15.82 | $158,20 |
| 100 | $13.49 | $1.349,00 |
| 500 | $11.95 | $5.975,00 |
| 1.000 | $10.65 | $10.650,00 |
ADM2482EBRWZ Descripción general
What is an isolated transceiver? An isolated transceiver is a type of interface IC that combines a galvanic isolation barrier with a standard serial communication protocol transceiver. It belongs to the broader family of digital isolators -> interface ICs -> wired communication transceivers -> semiconductors. The galvanic isolation (typically 2.5 kV rms or higher) protects low-voltage logic and host circuitry from large ground-potential differences, surge events, and fault voltages on long industrial bus segments. Isolated transceivers are essential when RS-485 cabling leaves the local equipment chassis and traverses factory floors, process plants, or outdoor installations.
Key features of the ADM2482EBRWZ include a 25 kV/µs common-mode transient immunity (CMTI), 16 Mbps maximum data rate (suitable for PROFIBUS and high-speed half/full-duplex RS-485), configurable half-duplex or full-duplex operation, and a 3.3 V/5 V logic-side supply with a 3.3 V isolated bus-side supply generated internally from pins D1/D2 driving an external transformer. The wide-body SOIC package provides the required 8 mm creepage clearance for 2.5 kV rms reinforced isolation per IEC 61850 / IEC 61010-1 system standards. Hot-swap glitch rejection on the DE and RE pins prevents data corruption during board insertion into a live backplane.
The transceiver uses an iCoupler-style transformer-driven isolation architecture: logic-side data crosses the isolation barrier through ADI's chip-scale micro-transformers, and bus-side power is rectified from a secondary winding. This architecture eliminates optocoupler LED aging concerns and provides stable timing across the industrial temperature range. The device operates over -40 °C to +85 °C ambient and meets ±15 kV ESD per IEC 61000-4-2 air-gap discharge on the bus pins.
Typical applications include isolated RS-485 nodes in industrial fieldbus networks (PROFIBUS DP, Modbus RTU), smart-grid metering and substation communications, building automation (BACnet, KNX), solar inverter CAN/RS-485 links, and any system requiring robust high-voltage isolation between a controller and a remote bus segment. Half-duplex mode uses pins Y/Z/A/B; full-duplex mode uses dedicated TX and RX differential pairs.
When designing with the ADM2482EBRWZ, pay attention to the center-tapped transformer selection: a 1:1.33 to 1:1.5 turns ratio with adequate isolation rating is recommended. Place the Schottky diodes and smoothing capacitor close to pins D1/D2 for clean bus-side power, and use 120 Ω termination at both ends of the RS-485 bus. The wide-body SOIC footprint requires an 8 mm minimum clearance under the package for 2.5 kV rms reinforced isolation.
This page synthesizes distributor pricing, drop-in alternatives from the ADM2482E/ADM2487E family, and practical design notes not found in the manufacturer datasheet alone.
Alternativas directas para ADM2482EBRWZ — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ADM2482EBRWZ (mismo factor de forma y huella) — difiere en Data Rate, Isolation Voltage, Package.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ADM2482EBRWZ-REEL7
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ADM2487EBRWZ
✅ Sustitución directa✓ En stock
$4.16 / unidad
Ver hoja de datos →ADM2481BRWZ
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
ISO3082DW
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MAX14855GWE+T
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ADM2482EBRWZ Especificaciones
| Isolation Voltage | 2500 V rms |
| Velocidad de datos | 16 Mbps |
| Protocol | RS-422, RS-485 |
| Number of Channels | 3 |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| ESD Protection (Bus Pins) | ±15 kV (IEC 61000-4-2 air-gap) |
| Supply Voltage (Logic Side, VDD1) | 3.0 V to 5.5 V |
| Supply Voltage (Bus Side, VDD2) | 3.3 V (internal, via transformer driver) |
| Temperatura de funcionamiento | -40 °C to +85 °C |
| Encapsulado | SOIC-16 Wide-Body (7.5 mm / 0.295 inch) |
| Número de pines | 16 |
| Duplex Mode | Half-duplex or Full-duplex (configurable) |
| Tipo de montaje | Surface Mount |
| Driver/Receiver Count | 1/1 |
| Estado RoHS | Compliant |
Configuración de pines de ADM2482EBRWZ
| Pin 1 | VDD1 — Logic-side power supply input (3.0 V to 5.5 V) |
| Pin 2 | GND1 — Logic-side ground |
| Pin 3 | RXD — Receiver output (logic side, CMOS) |
| Pin 4 | RE — Receiver enable input, active low |
| Pin 5 | DE — Driver enable input, active high |
| Pin 6 | TXD — Driver input (logic side, CMOS) |
| Pin 7 | NC — Not connected (per datasheet) |
| Pin 8 | NC — Not connected (per datasheet) |
| Pin 9 | GND2 — Bus-side ground |
| Pin 10 | NC — Not connected (per datasheet) |
| Pin 11 | VDD2 — Bus-side 3.3 V supply (rectified from transformer) |
| Pin 12 | A — Non-inverting receiver input (bus side) |
| Pin 13 | B — Inverting receiver input (bus side) |
| Pin 14 | Z — Inverting driver output (bus side) |
| Pin 15 | Y — Non-inverting driver output (bus side) |
| Pin 16 | D1/D2 — Transformer driver outputs to external center-tapped transformer primary |
Aplicaciones típicas
ADM2482EBRWZ es adecuado para 7 aplicacións: Industrial Fieldbus Networks (PROFIBUS / Modbus RTU), Smart Grid Substation Communications, Building Automation (BACnet / KNX / LonWorks), Solar Inverter Communications, Motor Drive and VFD Isolated Communication, Medical Equipment Isolated Data Links, Renewable Energy Battery Management (BMS).
Industrial Fieldbus Networks (PROFIBUS / Modbus RTU)
The ADM2482EBRWZ fits PROFIBUS DP and Modbus RTU fieldbus nodes where 2.5 kV rms reinforced isolation and ±15 kV ESD on bus pins protect the controller from ground-potential differences on factory floors. Its 16 Mbps data rate supports PROFIBUS at the upper end of the DP segment, while the 25 kV/µs CMTI rejects transients injected from VFD-driven motors on adjacent cables. Placed between the host MCU's UART and the RS-485 bus, it eliminates the need for an external isolated DC/DC by deriving bus-side power from the integrated transformer driver. The wide-body SOIC provides the 8 mm creepage required by IEC 61850 / IEC 61010-1 for process-control equipment.
Recomendado
Smart Grid Substation Communications
The ADM2482EBRWZ's 2.5 kV rms isolation barrier makes it well-suited for substation RTU and IED (Intelligent Electronic Device) communication buses per IEC 61850. Its transformer-driven bus-side supply eliminates failure-prone isolated DC/DCs in equipment that must operate reliably over decades in outdoor cabinets. The ±15 kV ESD withstand on bus pins protects against installer-induced discharge and nearby lightning-induced transients on overhead line interfaces. Used on DNP3 or IEC 61850-9-2 process-bus links, it bridges the substation controller's logic domain to the high-voltage switchyard bus with reinforced isolation. Operating temperature of -40 °C to +85 °C covers outdoor cabinet environments.
Recomendado
Building Automation (BACnet / KNX / LonWorks)
The ADM2482EBRWZ serves HVAC controllers, lighting panels, and access-control gateways that communicate over BACnet MS-TP, LonWorks, or proprietary RS-485 building networks. Its 2.5 kV rms isolation protects sensitive 3.3 V logic from miswiring-induced faults during installation in mixed-voltage commercial environments. The integrated transformer driver keeps the BOM compact for cost-sensitive building-automation designs, and the wide-body SOIC footprint simplifies PCB layout with 8 mm creepage. The 16 Mbps headroom also supports faster proprietary protocols used in modern BMS backbones.
Recomendado
Solar Inverter Communications
The ADM2482EBRWZ isolates the DC-side string-monitoring MCU from the AC-side RS-485 daisy-chain that links photovoltaic inverters to the data-acquisition gateway. Its 2.5 kV rms barrier withstands the large ground-potential difference between floating PV strings and the grid-tied inverter chassis. The integrated transformer driver reduces BOM cost in volume production, while the ±15 kV ESD rating protects against installer errors during commissioning. Half-duplex mode with Y/Z/A/B external ties fits typical Modbus RTU inverter-to-gateway topologies running at 115.2 kbps or higher.
Recomendado
Motor Drive and VFD Isolated Communication
The ADM2482EBRWZ isolates the host PLC's communication channel from variable-frequency drive (VFD) control ports that see rapid common-mode swings from PWM switching. Its 25 kV/µs CMTI ensures data integrity even when the bus cable runs parallel to motor phase conductors carrying kV/µs-class edges. The 2.5 kV rms isolation protects the PLC if a motor insulation failure injects line voltage onto the communication cable. Placed at the RS-485 port of a VFD or servo drive, it bridges the control cabinet to the motor-drive chassis with reinforced isolation.
Recomendado
Medical Equipment Isolated Data Links
The ADM2482EBRWZ provides reinforced 2.5 kV rms isolation for patient-monitoring or diagnostic-imaging systems that must meet IEC 60614-1 patient auxiliary current limits. Its integrated transformer driver reduces the BOM compared to optocoupler-plus-isolated-DC/DC designs, which simplifies creepage/clearance review. The 16 Mbps data rate supports fast image-transfer links between MR/CT gantry electronics and the reconstruction workstation across the isolation boundary. The wide-body SOIC package's 8 mm creepage supports the 2 Means of Patient Protection (MOPP) requirements common in medical equipment.
Recomendado
Renewable Energy Battery Management (BMS)
The ADM2482EBRWZ bridges the high-voltage battery stack monitor to the low-voltage master BMS controller, isolating 400 V or 800 V battery stacks from the 12 V/24 V vehicle or stationary controller domain. Its 2.5 kV rms barrier meets UL 1973 / IEC 62619 requirements for battery isolation. The ±15 kV ESD rating on bus pins is critical because BMS harnesses are often factory-built and fielded in environments with significant ESD risk. The integrated transformer driver minimizes auxiliary power complexity for compact battery modules.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ADM2482EBRWZ — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ADM2482EBRWZ-REEL7 | ADM2487EBRWZ | ADM2481BRWZ | ISO3082DW | MAX14855GWE+T |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Analog Devices |
| Package | SOIC-16 Wide-Body (7.5 mm) | SOIC-16 Wide-Body - same | SOIC-16 Wide-Body - same | SOIC-16 Wide-Body - same | SOIC-16 Wide-Body - same | SOIC-16 Wide-Body - same |
| Isolation Voltage | 2500 V rms | 2500 V rms | 2500 V rms | 2500 V rms | 2500 V rms | 2500 V rms |
| Data Rate | 16 Mbps | 16 Mbps | 500 kbps | 500 kbps | 1 Mbps | 1 Mbps |
| Bus-Side Power | Integrated transformer driver | Integrated transformer driver | Integrated transformer driver | External isolated supply required | Integrated DC-DC converter | Integrated DC-DC converter |
| Duplex Mode | Half/Full-duplex | Half/Full-duplex | Half/Full-duplex | Half-duplex | Half-duplex | Half/Full-duplex |
Diferenciadores clave
- Highest data rate in the ADM2482E/ADM2487E family (frente a ADM2487EBRWZ)
- Integrated transformer driver eliminates isolated DC/DC BOM (frente a ISO3082DW (Texas Instruments))
- ±15 kV ESD protection on bus pins (frente a ADM2481BRWZ)
Notas de diseño
The ADM2482EBRWZ derives its bus-side 3.3 V supply (VDD2) from the D1/D2 transformer-driver outputs. Select a center-tapped transformer with a 1:1.33 to 1:1.5 turns ratio and a primary rated for the ADM2482E's switching frequency. Place two Schottky diodes (e.g., BAT54S) and a 10 µF smoothing capacitor close to the transformer secondary. Add a 100 nF decoupling capacitor directly at the VDD2 pin. A common pitfall is using a transformer with insufficient isolation rating — it must be rated for at least 2.5 kV rms to preserve the device's reinforced isolation.
Use a wide-body SOIC-16 footprint with at least 8 mm of creepage clearance under and around the package to maintain 2.5 kV rms reinforced isolation per IEC 60664-1. Do not place any traces, vias, or copper fills under the package between the logic-side and bus-side pins. Maintain at least 8 mm of clearance between logic-side signals (RXD, TXD, DE, RE, VDD1) and bus-side signals (A, B, Y, Z, VDD2) on the PCB outer layers. The wide-body SOIC package is wider than a standard SOIC-16 — confirm your footprint matches the 7.5 mm body width.
Do not enable the driver (DE high) while the receiver is active in half-duplex mode without ensuring proper bus turnaround timing — this can cause bus contention and reflected waves that corrupt data. Place a 120 Ω termination resistor at each end of the RS-485 bus; for half-duplex mode with stubs, use lower-value resistors (e.g., 100 Ω) or fail-safe biasing resistors if needed. The receiver has built-in fail-safe biasing, so external bias resistors are usually not required. Avoid routing the bus cable parallel to motor phase conductors — the 25 kV/µs CMTI will reject transients but excessive common-mode noise can saturate the receiver.
Información de cumplimiento
RoHS compliant per Analog Devices product page. Reinforced 2.5 kV rms isolation rated per IEC 61850 / IEC 61010-1 system standards. ±15 kV ESD protection rated per IEC 61000-4-2 air-gap discharge. Not AEC-Q100 qualified — automotive applications should use AEC-Q100-qualified equivalents or consult Analog Devices automotive-grade portfolio.
