ADM2482EBRWZ - 2.5kV Isolated RS-485/RS-422 Transceiver | ADI
部品番号: ADM2482EBRWZ ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 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 概要
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.
ドロップイン代替品: ADM2482EBRWZ — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: ADM2482EBRWZ （同一形状・フットプリント） — 相違点: Data Rate, Isolation Voltage, Package.
クイック比較ツール — 並列比較する代替部品を選択:
ADM2482EBRWZ-REEL7
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ADM2487EBRWZ
✅ ドロップイン✓ 在庫あり
$4.16 / 個
データシートを見る →ADM2481BRWZ
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ISO3082DW
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX14855GWE+T
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ADM2482EBRWZ 仕様
| Isolation Voltage | 2500 V rms |
| データレート | 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) |
| 動作温度 | -40 °C to +85 °C |
| パッケージ | SOIC-16 Wide-Body (7.5 mm / 0.295 inch) |
| ピン数 | 16 |
| Duplex Mode | Half-duplex or Full-duplex (configurable) |
| 実装タイプ | Surface Mount |
| Driver/Receiver Count | 1/1 |
| RoHS ステータス | Compliant |
ADM2482EBRWZ ピン構成
| ピン 1 | VDD1 — Logic-side power supply input (3.0 V to 5.5 V) |
| ピン 2 | GND1 — Logic-side ground |
| ピン 3 | RXD — Receiver output (logic side, CMOS) |
| ピン 4 | RE — Receiver enable input, active low |
| ピン 5 | DE — Driver enable input, active high |
| ピン 6 | TXD — Driver input (logic side, CMOS) |
| ピン 7 | NC — Not connected (per datasheet) |
| ピン 8 | NC — Not connected (per datasheet) |
| ピン 9 | GND2 — Bus-side ground |
| ピン 10 | NC — Not connected (per datasheet) |
| ピン 11 | VDD2 — Bus-side 3.3 V supply (rectified from transformer) |
| ピン 12 | A — Non-inverting receiver input (bus side) |
| ピン 13 | B — Inverting receiver input (bus side) |
| ピン 14 | Z — Inverting driver output (bus side) |
| ピン 15 | Y — Non-inverting driver output (bus side) |
| ピン 16 | D1/D2 — Transformer driver outputs to external center-tapped transformer primary |
主な用途
ADM2482EBRWZ の用途: 7 件s: 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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ADM2482EBRWZ — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | 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 |
主な差別化要因
- Highest data rate in the ADM2482E/ADM2487E family （vs ADM2487EBRWZ)
- Integrated transformer driver eliminates isolated DC/DC BOM （vs ISO3082DW (Texas Instruments))
- ±15 kV ESD protection on bus pins （vs ADM2481BRWZ)
設計ノート
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.
コンプライアンス情報
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.
