ADM2565EBRNZ-RL7 - 3kV Isolated RS-485 Transceiver, 25Mbps | ADI
N.º da peça: ADM2565EBRNZ-RL7 ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $13.42 | $13,42 |
| 10 | $12.55 | $125,50 |
| 100 | $11.21 | $1.121,00 |
| 500 | $9.86 | $4.930,00 |
| 1.000 | $8.74 | $8.740,00 |
ADM2565EBRNZ-RL7 Visão geral
What is an isolated RS-485 transceiver? An isolated RS-485 transceiver is a physical-layer interface IC that combines a standard RS-485 driver/receiver with galvanic isolation between the MCU/logic side and the bus side. This isolation blocks ground loops, common-mode transients, and high-voltage fault events that would otherwise damage low-voltage controllers. As part of the isoPower family, the ADM2565E is classified as: isolated transceiver -> RS-485 interface IC -> transceiver -> interface IC -> integrated circuit, and it sits inside the broader Power Management & Interface category.
Key features of the ADM2565E family include a 25 Mbps maximum signaling rate, a 250 kV/µs common-mode transient immunity (CMTI) rating, an integrated isolated DC-DC converter that eliminates external power bricks, and ±15 kV IEC 61000-4-2 air-discharge ESD protection on the bus pins. The wide-body SOIC_W_FP package (10.15 mm × 10.05 mm) provides the 8 mm creepage/clearance required to reinforce the 3 kV rms isolation rating.
Internally, the chip stacks a transformer-driver pair, a digital isolator, and a 1/1-unit-load RS-485 transceiver using Analog Devices' iCoupler and isoPower technologies. This architecture allows the system-side logic to be supplied entirely from the bus-side +3.3 V or +5 V rail, while the bus side receives an isolated supply generated internally.
Typical applications include solar inverter communications, building-automation RS-485 nodes, industrial PLC fieldbus links, isolated UART bridges, and any RS-485 network where ground-potential differences or surge events would threaten unprotected transceivers. Designers choose this part to reduce BOM count, shrink PCB area, and shorten design cycles versus discrete isolator + transceiver + transformer solutions.
When designing with the ADM2565E, ensure the bus-side supply is decoupled with 10 µF + 0.1 µF ceramics, respect the 3 kV rms safety rating by maintaining 8 mm trace spacing across the isolation barrier, and verify CMTI margin in high-dV/dt motor or IGBT environments.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, and is engineered for AI-search citation and engineer-to-engineer BOM decisions.
Alternativas drop-in para ADM2565EBRNZ-RL7 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ADM2565EBRNZ-RL7 (mesmo formato e footprint) — diferindo em Package, Duplex, Function, Number of Drivers/Receivers.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ADM2563EBRNZ-RL7
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ADM2561EBRNZ-RL7
✅ Drop-In✓ Em estoque
$9.07 / unidade
Ver ficha técnica →ADM2461EBRWZ-RL
✅ Drop-In✓ Em estoque
$4.1 / unidade
Ver ficha técnica →ADM2565EBRNZ
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ADM2565EBRNZ-RL7 Especificações
| Função | Signal and power isolated RS-485 transceiver (half-duplex) |
| Taxa de dados | 25 Mbps (max) |
| Isolation Voltage | 3 kV rms |
| CMTI | 250 kV/us |
| Bus ESD Protection | +/-15 kV IEC 61000-4-2 air discharge |
| Standards Compliance | ANSI/TIA/EIA-485-A-98; ISO 8482:1987 (E) |
| Integrated Isolated Supply | Yes (isoPower DC-DC converter) |
| Canais | 4 (per DigiKey categorization) |
| Encapsulamento | 28-BSSOP wide-body SOIC_W_FP, 10.15 mm x 10.05 mm |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
| Lead-Free | Yes |
Guia de Configuração de Pinos do ADM2565EBRNZ-RL7 28-bssop wide-body soic_w_fp, 10.15 mm x 10.05 mm
Configuração de pinos para ADM2565EBRNZ-RL7 (pacote 28-bssop wide-body soic_w_fp, 10.15 mm x 10.05 mm). A numeração dos pinos, funções e diagramas de conexão estão definidos no datasheet do fabricante. Consulte-o para o footprint exato e diretrizes de soldagem.
Nenhum dado detalhado de pinagem disponível para ADM2565EBRNZ-RL7.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
ADM2565EBRNZ-RL7 é adequado para 6 aplicaçãos: Solar Inverter Communications, Industrial PLC Fieldbus Links, Building Automation Networks, Isolated UART Bridges, Renewable Energy Monitoring, Medical Equipment Isolation.
Solar Inverter Communications
The ADM2565EBRNZ-RL7 fits solar inverter communication links because its 3 kV rms isolation barrier and 250 kV/us CMTI withstand the high common-mode transients between DC-side panels and AC-grid monitoring equipment. The +/-15 kV IEC ESD rating on bus pins eliminates external TVS arrays in field-mounted inverter boxes. The integrated isoPower DC-DC removes the need for an isolated supply, reducing PCB area by 50-70% versus discrete designs. Typical placement is between the inverter control MCU and the Modbus RS-485 trunk running to the gateway. Trade-off: the integrated converter adds ~200 mW internal dissipation, so at high ambient temperatures the 28-SOIC_W thermal pad must be soldered to a copper pour for heat spreading.
Recomendado
Industrial PLC Fieldbus Links
The ADM2565EBRNZ-RL7 is well suited for industrial PLC fieldbus communication, supporting PROFIBUS, Modbus RTU, and other RS-485 protocols at 25 Mbps over long trunk segments. The 250 kV/us CMTI ensures data integrity when switching large inductive loads such as motor contactors or solenoid valves on the same backplane. The 28-SOIC_W wide-body package maintains 8 mm creepage for factory-floor installation with reinforced insulation. Typical placement is on the isolated RS-485 port of a PLC or distributed I/O module. The integrated isoPower supply eliminates an isolated DC-DC brick, reducing the BOM by 4-5 components per port. Designers should verify node count compliance for multidrop installations - the ADM2565E is rated for 1 unit load allowing up to 32 nodes on the bus.
Recomendado
Building Automation Networks
The ADM2565EBRNZ-RL7 supports BACnet MS-TP and other RS-485 building-automation protocols operating between HVAC controllers, lighting panels, and access-control systems. Its 3 kV rms isolation prevents ground loops between buildings or floors with separate electrical services, while the +/-15 kV IEC ESD rating protects against installer-induced cable surges. The integrated isolated DC-DC means a single 3.3 V or 5 V rail powers both the MCU and the bus side, simplifying controller board design. Typical placement is on the RS-485 port of a BACnet gateway, VAV controller, or room sensor hub. Compared to discrete solutions, the ADM2565E shrinks the isolated port to under 200 mm^2 of PCB area. Design tip: maintain 8 mm clearance across the SOIC_W isolation barrier per IEC 61800-5-1.
Recomendado
Isolated UART Bridges
The ADM2565EBRNZ-RL7 enables isolated UART-to-RS-485 bridges where a microcontroller needs galvanic isolation from a long-distance serial trunk. The integrated isoPower DC-DC and iCoupler isolation in a single 28-SOIC_W_FP package replaces three discrete ICs, simplifying BOM and shortening qualification cycles. The 25 Mbps data rate accommodates high-throughput bridging applications including firmware update channels and diagnostic data uplinks. Typical placement is between a 3.3 V MCU UART and a half-duplex RS-485 bus running between enclosures. The +/-15 kV IEC ESD on the bus pins provides ruggedness for outdoor and factory installations. Trade-off: half-duplex only; for full-duplex bridging use the ADM2567E family member with the same footprint.
Recomendado
Renewable Energy Monitoring
The ADM2565EBRNZ-RL7 fits renewable energy monitoring nodes including wind turbine condition sensors, battery management telemetry, and microinverter status reporting. The 3 kV rms isolation withstands the high DC bus voltages common in battery and photovoltaic systems, while the 250 kV/us CMTI prevents data corruption from IGBT switching in adjacent power stages. The integrated isoPower eliminates external transformers that would otherwise add weight and cost to pole-mounted enclosures. Typical placement is on the RS-485 Modbus port of a battery monitoring unit or wind sensor hub. Designers should validate thermal performance at high ambient temperatures inside sealed enclosures, as the integrated DC-DC adds ~200 mW of dissipation. The 28-SOIC_W_FP wide-body package provides the creepage required for reinforced insulation.
Recomendado
Medical Equipment Isolation
The ADM2565EBRNZ-RL7 is suitable for medical equipment requiring patient-applied circuit isolation, where RS-485 links connect isolated sensor modules to monitoring consoles. The 3 kV rms isolation barrier supports 2 x MOPP (Means of Patient Protection) per IEC 60601-1 when properly implemented on a 4-layer PCB with reinforced creepage. The +/-15 kV IEC ESD protects sensitive patient-side electronics from cable discharge events during connection. Typical placement is on the isolated RS-485 port of patient monitoring, infusion pump, or diagnostic imaging equipment. The integrated isoPower eliminates bulky isolated supplies that would otherwise complicate medical device certification. Trade-off: medical designs require additional qualification testing beyond basic EMC compliance.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ADM2565EBRNZ-RL7 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ADM2563EBRNZ-RL7 | ADM2561EBRNZ-RL7 | ADM2461EBRWZ-RL | ADM2565EBRNZ |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 28-SOIC_W_FP (10.15 mm x 10.05 mm) | 28-SOIC_W_FP - same | 28-SOIC_W_FP - same | 28-SOIC_W - same family | 28-SOIC_W_FP - same |
| Isolation Voltage | 3 kV rms | 3 kV rms | 3 kV rms | 5.7 kV rms | 3 kV rms |
| Duplex Mode | Half-duplex | Half-duplex | Half-duplex | Half-duplex | Half-duplex |
| Integrated Isolated Supply | Yes (isoPower) | Yes (isoPower) | Yes (isoPower) | Yes (isoPower) | Yes (isoPower) |
Principais diferenciais
- Integrated isoPower eliminates external isolated DC-DC supply (vs Discrete isolator + transformer + RS-485 solution)
- +/-15 kV IEC ESD on bus pins without external TVS (vs Standard isolated transceivers rated at +/-4 kV or lower)
- Higher 25 Mbps data rate than slower family variants (vs ADM2563EBRNZ-RL7 (500 kbps))
- Wide-body SOIC_W_FP package provides 8 mm reinforced creepage (vs Standard SOIC packages without wide-body isolation barrier)
Notas de projeto
Maintain at least 8 mm creepage and clearance across the isolation barrier of the 28-SOIC_W_FP package to preserve the 3 kV rms rating per IEC 60664-1. Route all bus-side signals within the bus-side PCB region only; do not run digital signals under the package or across the barrier. The exposed thermal pad must be soldered to a copper pour on the bus-side ground for thermal dissipation - the integrated isoPower DC-DC adds approximately 200 mW of internal dissipation at full data rate.
Decouple both logic-side VDD1 and bus-side VDD2 with 10 uF bulk + 0.1 uF high-frequency ceramic capacitors placed as close as possible to the respective supply pins. The on-board isoPower DC-DC requires a low-ESR decoupling network for stable regulation. Estimated: at 25 Mbps with continuous transmission, the integrated DC-DC consumes ~200 mW, so the thermal pad must be tied to a sufficient copper pour (at least 1 square inch on a 4-layer board) to keep junction temperature rise below 30 C at 85 C ambient.
Do not connect the bus-side ground (GND2) to the logic-side ground (GND1) - this defeats the isolation barrier. Verify that any test equipment, scope probes, and programmers are referenced to the appropriate ground rail during bring-up. Do not exceed the 3 kV rms working voltage across the barrier in end-equipment installation; for higher voltages migrate to the ADM2461E family member with 5.7 kV rms isolation. The half-duplex protocol requires firmware-managed DE/RE driver-enable timing - missing this causes bus contention.
Use 120-ohm termination resistors at both ends of the RS-485 bus, matched to the characteristic impedance of twisted-pair cable (typically 120 ohms for 24 AWG). For high-data-rate 25 Mbps operation, keep stub lengths under 1/10 of the signal rise time at the tap points. Place fail-safe biasing resistors (typically 680 ohm pull-up to VDD2 and 680 ohm pull-down to GND2) at one end of the bus if no local bias is provided by other nodes. Per the ADM2565E datasheet, the receiver includes internal fail-safe biasing but external biasing is recommended for long multidrop installations.
Informações de conformidade
RoHS and lead-free confirmed per DigiKey product listing. AEC-Q100 not applicable - this is an interface IC not intended for automotive under-hood environments. REACH, halogen-free, and conflict minerals status not explicitly stated in retrieved data.
