Basic Product Information
Part Number: ADM2687EBRIZ
| Field |
Value |
| Manufacturer |
Analog Devices |
| Device Type |
ADM2687EBRIZ – 5 kV rms Signal & Power Isolated RS-485 Transceiver |
| Package |
16-Lead Wide-Body SOIC (Increased Creepage, >8mm) |
| Compliance |
RoHS Compliant |
| Grade |
Industrial |
Core Electrical Parameters
| Parameter |
Value |
Unit |
| Isolation Voltage |
5000 |
V rms |
| Data Rate |
500 |
kbps |
| Supply Voltage |
3.3 / 5.0 |
V |
| Supply Current (max) |
120 |
mA |
| Nominal Supply Current |
55 |
mA |
| Number of Drivers / Receivers |
1 / 1 |
— |
| Max Nodes per Bus |
256 |
— |
| Common-Mode Transient Immunity |
>25 |
kV/µs |
| ESD Protection (RS-485 pins) |
±15 |
kV |
| Propagation Delay |
63 / 64 |
ns |
| Duplex Configuration |
Full / Half duplex (configurable) |
— |
| Operating Temperature Range |
-40 to +85 |
°C |
Core Features & Advantages
The ADM2687EBRIZ delivers a fully integrated signal-and-power isolated RS-485 solution in a single IC, eliminating the need for external isolation components.
- Primary Function: 5 kV rms signal and power isolated RS-485/RS-422 transceiver with integrated isoPower DC-DC converter for high-voltage industrial communication.
- Advantages:
- Integrated Isolated Power (isoPower): On-chip isolated DC-DC converter removes the need for an external isolation power supply module, reducing BOM cost by 30-50% and shrinking PCB area significantly.
- 5 kV rms Reinforced Isolation: Provides reinforced galvanic isolation between bus and logic sides with >8mm creepage/clearance, meeting IEC 61010-1 safety requirements for industrial equipment.
- ±15 kV ESD + Fault Protection: RS-485 I/O pins withstand ±15 kV HBM ESD strikes, while open-circuit and short-circuit fail-safe receiver inputs protect against bus wiring faults.
Typical Application Scenarios
- Industry: Industrial Automation / Energy Metering / Building Control
- Equipment: PLCs, energy meters, motor drives, HVAC controllers, factory fieldbus nodes
- Use Cases:
- Isolated RS-485 communication link in Modbus RTU networks connecting PLCs to remote I/O modules across noisy factory floors.
- Smart energy metering with isolated data acquisition channel, ensuring safety compliance while reading meters on live high-voltage lines.
- Building automation bus node requiring full/half-duplex RS-485 with 256-node multi-drop capability and hot-swap robustness.
Market Reference Price
| Market |
Price Range |
Currency |
| Huaqiangbei Spot |
$8.00 – $14.00 |
USD |
| Overseas B2B |
$7.65 – $20.71 |
USD |
Related Models Comparison
| Model |
Difference |
Application |
| ADM2682E |
Same isolation, slew-rate limited (250 kbps), lower EMI |
EMI-sensitive long-cable RS-485 links |
| ADM2863E |
Newer gen, 5.7 kV rms isolation, ±15 kV IEC ESD |
Next-generation designs requiring higher isolation |
| ISO3086 |
TI equivalent, requires external isolated supply |
RS-485 where separate DC-DC is already available |
