ADM2687EBRIZ-RL7 - 5kV Isolated RS-485 Transceiver | Analog Devices
MPN: ADM2687EBRIZ-RL7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.5 | $8.50 |
| 10 | $7.65 | $76.50 |
| 100 | $6.8 | $680.00 |
| 500 | $6.12 | $3,060.00 |
| 1,000 | $5.44 | $5,440.00 |
Drop-in alternatives for ADM2687EBRIZ-RL7 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADM2687EBRIZ
✅ Drop-In✓ In Stock
$8.5 / Unit
View Datasheet →ADM2682EBRIZ
✅ Drop-In✓ In Stock
$7.85 / Unit
View Datasheet →ADM2587EBRIZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADM2483BRWZ
✅ Drop-In✓ In Stock
$3.75 / Unit
View Datasheet →ADM2483BRWZ-RL7
✅ Drop-In✓ In Stock
$4.16 / Unit
View Datasheet →ISO3082DW
✅ Drop-In📋 Reference alternative (not in catalog)
ADM2687EBRIZ-RL7 Maximum Ratings & Electrical Characteristics
| Type | RS-422, RS-485 Digital Isolator |
| Number of Channels | 3 |
| Isolation Voltage | 5000 Vrms |
| Data Rate | 500 kbps |
| CMTI | 25 kV/µs |
| ESD Protection | ±15 kV |
| Supply Voltage | 3.3 V or 5 V |
| Operating Temperature | -40°C to +85°C |
| Package | 16-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| Duplex | Half or Full |
| Standards | ANSI/TIA/EIA-485-A-98, ISO 8482:1987 (E) |
| Integrated DC-DC | Yes (isoPower) |
| RoHS Status | Compliant |
| Number of Drivers | 1 |
| Number of Receivers | 1 |
ADM2687EBRIZ-RL7 Pin Configuration
| Pin 1 | VDD1 — Logic side supply voltage (3.3V or 5V) |
| Pin 2 | GND1 — Logic side ground |
| Pin 3 | TXD — Transmit data input |
| Pin 4 | RXD — Receive data output |
| Pin 5 | DE — Driver enable (active high) |
| Pin 6 | RE — Receiver enable (active low) |
| Pin 7 | NC — No connect |
| Pin 8 | NC — No connect |
| Pin 9 | A — Non-inverting bus line |
| Pin 10 | B — Inverting bus line |
| Pin 11 | GND2 — Isolated side ground |
| Pin 12 | VDD2 — Isolated side supply voltage (output of isoPower) |
| Pin 13 | NC — No connect |
| Pin 14 | NC — No connect |
| Pin 15 | NC — No connect |
| Pin 16 | NC — No connect |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ADM2687EBRIZ-RL7 is suitable for 6 applications: Industrial Fieldbus Networks, Building Automation Systems, Motor Control Drives, Solar Inverters, Power Monitoring Systems, HVAC Controllers.
Industrial Fieldbus Networks
The ADM2687EBRIZ-RL7 is ideal for industrial fieldbus networks such as Modbus and Profibus. Its 5 kV isolation and 25 kV/µs CMTI ensure reliable communication in electrically noisy environments. The integrated DC-DC converter simplifies power supply design, and the 500 kbps data rate supports standard fieldbus protocols. The ±15 kV ESD protection on the bus pins enhances robustness against electrostatic discharges common in industrial settings.
Recommended
Building Automation Systems
In building automation, the ADM2687EBRIZ-RL7 provides galvanic isolation for HVAC controllers, lighting systems, and access control networks. Its wide operating temperature range (-40°C to +85°C) suits rooftop and outdoor installations. The integrated isoPower eliminates the need for separate isolated supplies, reducing installation complexity. The device's compliance with RS-485 standards ensures interoperability with existing building management systems.
Recommended
Motor Control Drives
The ADM2687EBRIZ-RL7 is used in motor control drives to isolate the control electronics from the high-voltage power stage. Its 5 kV isolation protects low-voltage logic from transient voltages and ground loops. The high CMTI (25 kV/µs) ensures data integrity during fast switching events. The integrated DC-DC converter provides a clean, isolated supply for the transceiver, reducing noise coupling into the communication lines.
Recommended
Solar Inverters
Solar inverters require robust isolation between the DC input and AC output stages. The ADM2687EBRIZ-RL7 provides 5 kV isolation, ensuring safety and noise immunity in high-voltage environments. Its wide temperature range and high ESD protection make it suitable for outdoor installations. The integrated DC-DC converter simplifies the power architecture, reducing component count and improving reliability.
Recommended
Power Monitoring Systems
In power monitoring systems, the ADM2687EBRIZ-RL7 isolates communication interfaces from high-voltage measurement circuits. Its 5 kV isolation prevents ground loops and protects sensitive monitoring equipment. The 500 kbps data rate is sufficient for transmitting measurement data over long distances. The device's compliance with RS-485 standards ensures compatibility with existing monitoring infrastructure.
Recommended
HVAC Controllers
The ADM2687EBRIZ-RL7 is used in HVAC controllers to provide isolated communication between the main controller and remote sensors or actuators. Its 5 kV isolation protects against voltage surges and ground potential differences. The wide operating temperature range and high ESD protection ensure reliable operation in harsh environments. The integrated DC-DC converter simplifies power supply design, making it easy to integrate into space-constrained controllers.
Recommended
Recommended Products Summary
Engineering reference data for ADM2687EBRIZ-RL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADM2687EBRIZ | ADM2682EBRIZ | ADM2587EBRIZ | ADM2483BRWZ | ISO3082DW |
|---|---|---|---|---|---|---|
| Package | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (same) | 16-SOIC (same) | 16-SOIC (same) | 16-SOIC (same) | 16-SOIC (same) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Isolation Voltage | 5000 Vrms | 5000 Vrms | 5000 Vrms | 5000 Vrms | 2500 Vrms | 2500 Vrms |
| Data Rate | 500 kbps | 500 kbps | 500 kbps | 500 kbps | 500 kbps | 200 kbps |
| Integrated DC-DC | Yes | Yes | Yes | Yes | No | No |
| ESD Protection | ±15 kV | ±15 kV | ±15 kV | ±15 kV | ±15 kV | ±16 kV |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs |
| Supply Voltage | 3.3V or 5V | 3.3V or 5V | 3.3V or 5V | 3.3V or 5V | 3.3V or 5V | 3.3V or 5V |
Key Differentiators
- Integrated 5 kV rms isolation with isoPower DC-DC converter (vs ADM2483BRWZ)
- Higher data rate and CMTI (vs ISO3082DW)
- Tape-and-reel packaging for automated assembly (vs ADM2687EBRIZ)
Design Notes
For optimal isolation performance, maintain a minimum creepage distance of 8 mm between the logic side (pins 1-8) and the isolated side (pins 9-16) on the PCB. Use a ground plane on the logic side and a separate ground plane on the isolated side, with a slot cut between them to increase the isolation barrier. Place decoupling capacitors (0.1 µF and 10 µF) close to VDD1 and VDD2 pins.
The integrated isoPower DC-DC converter requires a minimum load to maintain regulation. Ensure the isolated side has a load of at least 10 mA, which is typically provided by the transceiver and bus termination resistors. If the load is too light, the output voltage may rise above the specified range. Add a dummy load resistor if necessary.
To reduce EMI, place a ferrite bead on the VDD1 supply line and use a 0.1 µF capacitor close to the pin. For the isolated side, use a common-mode choke on the A and B bus lines to suppress common-mode noise. Follow the layout guidelines in the ADM2687E datasheet for optimal EMC performance.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified. Halogen-free status not specified in available data.
