Overview
The ADM2482EBRWZ is a 2.5 kV isolated RS-485 transceiver produced by Analog Devices Inc. This device integrates a 3-channel isolator, a three-state differential line driver, and a differential input receiver into a single package. It employs Analog Devices' iCoupler® technology to ensure high isolation and reliability. The transceiver is designed for use in RS-485 and RS-422 applications, supporting balanced transmission lines and complying with TIA/EIA-485-A-98 and ISO 8482:1987(E) standards.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|
| Power Supply Voltage (VDD1, VDD2) | 3.0 | - | 5.5 | V | - |
| Power Supply Current, Bus Side (IDD2) at 500 kbps | - | - | 17 | mA | VDD2 = 3.6 V, half-duplex configuration, RTERMINATION = 120 Ω |
| Power Supply Current, Bus Side (IDD2) at 16 Mbps | - | - | 50 | mA | VDD2 = 3.6 V, half-duplex configuration, RTERMINATION = 120 Ω |
| Differential Output Voltage (|VOD2|) | 1.5 | - | 5.0 | V | RL = 54 Ω (RS-485) |
| Propagation Delay (tDPLH, tDPHL) | 100 | - | - | ns | RDIFF = 54 Ω, CL = 100 pF |
| Rise Time/Fall Time (tDR, tDF) | 15 | - | - | ns | RDIFF = 54 Ω, CL = 100 pF |
| Enable Time (tZL, tZH) | 120 | - | - | ns | RL = 110 Ω, CL = 50 pF |
| Disable Time (tLZ, tHZ) | 150 | - | - | ns | RL = 110 Ω, CL = 50 pF |
| Package Type | - | - | - | - | 16-SOIC (0.295", 7.50mm Width) |
Key Features
- 2.5 kV isolation using iCoupler® technology
- Compliance with TIA/EIA-485-A-98 and ISO 8482:1987(E) standards
- Support for RS-485 and RS-422 protocols
- Three-state differential line driver and differential input receiver
- On-chip oscillator for isolated power generation
- Active high enable for driver and active low enable for receiver
- High common-mode transient immunity (25 kV/μs)
- Operating temperature range: -40°C to +85°C
Applications
- Industrial automation and control systems
- Building automation and HVAC systems
- Medical devices requiring high isolation
- Aerospace and defense systems
- Automotive systems requiring robust communication
- Any application requiring isolated RS-485 or RS-422 communication
Q & A
- What is the isolation voltage of the ADM2482EBRWZ?
The ADM2482EBRWZ has an isolation voltage of 2.5 kV.
- Which communication protocols does the ADM2482EBRWZ support?
The ADM2482EBRWZ supports both RS-485 and RS-422 protocols.
- What is the package type of the ADM2482EBRWZ?
The ADM2482EBRWZ comes in a 16-SOIC package.
- What is the operating temperature range of the ADM2482EBRWZ?
The operating temperature range is -40°C to +85°C.
- How does the ADM2482EBRWZ generate isolated power?
The device uses an on-chip oscillator to drive an external transformer for isolated power generation.
- What is the common-mode transient immunity of the ADM2482EBRWZ?
The common-mode transient immunity is 25 kV/μs.
- What are the typical power supply currents for the bus side at different data rates?
At 500 kbps, the current is typically 17 mA, and at 16 Mbps, it is typically 50 mA.
- Does the ADM2482EBRWZ have active enable signals?
Yes, the driver has an active high enable, and the receiver has an active low enable.
- What are the propagation delay and rise/fall times of the ADM2482EBRWZ?
The propagation delay is 100 ns, and the rise/fall times are 15 ns.
- Is the ADM2482EBRWZ RoHS compliant?
Yes, the ADM2482EBRWZ is RoHS compliant.
