ADM2490EBRWZ-RL7 - Isolated RS-485 Transceiver | Analog Devices
MPN: ADM2490EBRWZ-RL7 ✓ فعالADM2490EBRWZ-RL7 نمای کلی
An RS-485 transceiver is a device that converts logic-level signals to differential voltages for balanced data transmission over twisted-pair cables, enabling robust communication over long distances and in harsh industrial settings. The ADM2490E belongs to the family of isolated interface ICs, which combine signal isolation and line driving in one package, simplifying PCB design and improving system reliability.
Key features include a 5V supply on both logic and bus sides, a full-duplex interface with separate driver and receiver channels, and thermal shutdown protection. The device is specified for operation over the industrial temperature range of -40°C to +105°C. Its integrated iCoupler technology uses chip-scale transformers to provide isolation, eliminating the need for external optocouplers and associated components.
The ADM2490E is designed for multipoint bus transmission, allowing up to 64 nodes on a single bus. It includes a receiver with a wide common-mode input range and a driver with short-circuit protection. The device is fully compliant with TIA/EIA RS-485 and RS-422 standards, making it suitable for industrial automation, building control, and instrumentation networks.
Typical applications include industrial fieldbus systems, HVAC control networks, and isolated data acquisition systems. The high CMTI and 5000 Vrms isolation make it ideal for applications requiring robust galvanic isolation, such as motor drives and power inverters.
When designing with this device, ensure proper PCB layout with adequate creepage and clearance distances for the isolation barrier. Place decoupling capacitors close to the supply pins and use a solid ground plane to minimize noise coupling.
جایگزین‌های drop-in برای ADM2490EBRWZ-RL7 — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای ADM2490EBRWZ-RL7 (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Number of Channels, Supply Voltage (Logic Side), Data Rate, Isolation Voltage, Type.
ADM2490EBRWZ
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ADM2483BRWZ
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ISO3082DW
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
ISL32704EIBZ
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
ADM2490EBRWZ-RL7 مشخصات
| Type | Isolated RS-485 Transceiver |
| Number of Channels | 2 (1 driver, 1 receiver) |
| نرخ داده | 16 Mbps |
| Isolation Voltage | 5000 Vrms |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Supply Voltage (Logic Side) | 5 V |
| Supply Voltage (Bus Side) | 5 V |
| Duplex | Full |
| Number of Nodes | 64 |
| ESD Protection | ±15 kV (IEC 61000-4-2) |
| محدوده دمای کاری | -40°C to +105°C |
| بسته‌بندی | 16-SOIC (0.295", 7.50mm Width) |
| نوع نصب | Surface Mount |
| وضعیت RoHS | Compliant |
| Standards | TIA/EIA RS-485, RS-422 |
پیکربندی پین ADM2490EBRWZ-RL7
| پین 1 | VDD1 — Logic side supply voltage (5V) |
| پین 2 | GND1 — Logic side ground |
| پین 3 | DI — Driver input |
| پین 4 | RO — Receiver output |
| پین 5 | RE — Receiver enable (active low) |
| پین 6 | DE — Driver enable (active high) |
| پین 7 | GND1 — Logic side ground |
| پین 8 | NC — No connect |
| پین 9 | A — Non-inverting bus terminal |
| پین 10 | B — Inverting bus terminal |
| پین 11 | GND2 — Bus side ground |
| پین 12 | Y — Driver output (non-inverting) |
| پین 13 | Z — Driver output (inverting) |
| پین 14 | GND2 — Bus side ground |
| پین 15 | VDD2 — Bus side supply voltage (5V) |
| پین 16 | GND2 — Bus side ground |
کاربردهای معمول
ADM2490EBRWZ-RL7 مناسب است برای 6 کاربردs: Industrial Fieldbus Systems, Building Automation and HVAC Control, Isolated Data Acquisition Systems, Motor Drives and Power Inverters, Solar Inverters and Energy Storage Systems, Transportation and Rail Systems.
Industrial Fieldbus Systems
The ADM2490EBRWZ-RL7 provides isolated RS-485 communication for industrial fieldbus networks such as PROFIBUS and Modbus. Its 5000 Vrms isolation and 25 kV/µs CMTI ensure reliable data transfer in environments with high electrical noise and ground potential differences. The 16 Mbps data rate supports fast polling cycles, while the full-duplex interface enables simultaneous read/write operations, improving network efficiency. The device's 64-node capability allows scalable network topologies, and its industrial temperature range (-40°C to +105°C) ensures operation in harsh factory floors.
پیشنهادی
Building Automation and HVAC Control
In building automation, the ADM2490EBRWZ-RL7 enables isolated communication between HVAC controllers, sensors, and actuators over long cable runs. The 5000 Vrms isolation protects sensitive control electronics from ground loops and lightning-induced surges. The full-duplex interface allows simultaneous status monitoring and command updates, while the 16 Mbps data rate supports rapid response in real-time control loops. The device's low power consumption and wide temperature range make it suitable for deployment in mechanical rooms and rooftop units. Its compliance with RS-485 standards ensures interoperability with existing building management systems.
پیشنهادی
Isolated Data Acquisition Systems
The ADM2490EBRWZ-RL7 is ideal for isolated data acquisition systems where sensors and data loggers are separated by large ground potential differences. The 5000 Vrms isolation prevents ground loops that could corrupt analog measurements. The full-duplex interface allows continuous data streaming and command updates, while the 16 Mbps data rate supports high-throughput data transfer from multi-channel ADC systems. The device's high CMTI ensures accurate data transmission even in the presence of fast transients from nearby power equipment. Its compact SOIC-16 package saves board space in space-constrained designs.
پیشنهادی
Motor Drives and Power Inverters
In motor drives and power inverters, the ADM2490EBRWZ-RL7 provides isolated communication between the control board and the power stage. The 5000 Vrms isolation protects low-voltage control electronics from high-voltage transients and switching noise. The 25 kV/µs CMTI ensures reliable data transmission despite fast voltage slew rates on the bus. The full-duplex interface enables simultaneous monitoring of motor status and sending of control commands, improving response times. The device's industrial temperature range and robust ESD protection make it suitable for harsh motor control environments.
پیشنهادی
Solar Inverters and Energy Storage Systems
The ADM2490EBRWZ-RL7 enables isolated RS-485 communication in solar inverters and battery energy storage systems. The 5000 Vrms isolation provides safety isolation between the high-voltage DC bus and the communication interface, meeting stringent safety standards. The full-duplex interface allows simultaneous monitoring of inverter status and control commands, while the 16 Mbps data rate supports fast data logging. The device's high CMTI ensures reliable communication in the presence of switching transients from power electronics. Its wide temperature range (-40°C to +105°C) supports outdoor installation in extreme climates.
پیشنهادی
Transportation and Rail Systems
In transportation and rail systems, the ADM2490EBRWZ-RL7 provides isolated RS-485 communication for onboard control networks, signaling, and diagnostics. The 5000 Vrms isolation ensures safety and reliability in high-vibration, high-EMI environments. The full-duplex interface supports simultaneous data exchange between train control units and wayside equipment. The device's industrial temperature range and robust ESD protection meet the demanding requirements of railway applications. Its compliance with RS-485 standards ensures interoperability with existing railway communication protocols.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای ADM2490EBRWZ-RL7 — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | ADM2490EBRWZ | ADM2483BRWZ | ISO3082DW | ISL32704EIBZ |
|---|---|---|---|---|---|
| Package | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) - same | 16-SOIC (0.295", 7.50mm Width) - same | 16-SOIC (0.295", 7.50mm Width) - same | 16-SOIC (0.295", 7.50mm Width) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Renesas Electronics |
| Duplex | Full | Full | Half | Half | Full |
| Data Rate | 16 Mbps | 16 Mbps | 500 kbps | 20 Mbps | 40 Mbps |
| Isolation Voltage | 5000 Vrms | 5000 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 50 kV/µs | 50 kV/µs |
| Number of Nodes | 64 | 64 | 256 | 256 | 256 |
| ESD Protection | ±15 kV (IEC 61000-4-2) | ±15 kV (IEC 61000-4-2) | ±15 kV (IEC 61000-4-2) | ±16 kV (IEC 61000-4-2) | ±16 kV (IEC 61000-4-2) |
تفاوت‌های کلیدی
- Higher isolation voltage (5000 Vrms) compared to many alternatives (در مقابلISO3082DW)
- Full-duplex operation at 16 Mbps (در مقابلADM2483BRWZ)
- Higher CMTI (25 kV/µs) for robust operation in noisy environments (در مقابلISL32704EIBZ)
یادداشت‌های طراحی
For the ADM2490EBRWZ-RL7, maintain a minimum creepage distance of 8 mm between the logic side (pins 1-8) and bus side (pins 9-16) to achieve the 5000 Vrms isolation rating. Use a PCB with a minimum of 4 layers to provide a solid ground plane on both sides of the isolation barrier. Place decoupling capacitors (0.1 µF and 10 µF) close to VDD1 and VDD2 pins to ensure stable supply voltages.
Route the differential bus lines (A, B, Y, Z) as a twisted pair with controlled impedance (typically 120 Ω) to minimize reflections and electromagnetic interference. Keep the bus lines away from high-speed digital traces and power switching circuits. Terminate the bus with 120 Ω resistors at both ends to match the characteristic impedance of the cable.
Do not exceed the absolute maximum supply voltage of 6V on VDD1 or VDD2. Ensure that the enable pins (RE and DE) are properly driven to avoid bus contention. When using the device in a multipoint bus, ensure that only one driver is active at a time to prevent data corruption. Also, verify that the common-mode voltage range of the receiver is not exceeded, as specified in the datasheet.
اطلاعات انطباق
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified. Halogen-free status not specified in available data.
