Overview
The ADM2461EBRWZ, produced by Analog Devices Inc., is a 500 kbps, 5.7 kV rms signal isolated RS-485 transceiver. This device is designed to provide robust isolation and immunity to noise and system-level electromagnetic compatibility (EMC) events. It is optimized for low-speed data transmission over long cable runs and is particularly suitable for applications requiring high reliability and compliance with stringent electromagnetic interference standards.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Primary Side Supply Current | IDD1 (Q) | 0.6 | 1 | 2 | mA | DE = 0 V |
| Isolated Side Supply Current | IDD2 (Q) | 5 | 8 | 9 | mA | VDD2 ≤ 3.6 V, DE = 0 V; VDD2 ≥ 4.5 V, DE = 0 V |
| Output Voltage Low | VOL | 0.4 | V | VDD1 = 3.6 V, IOUT = 2.0 mA, VID ≤ −0.2 V | ||
| Output Voltage High | VOH | 2.4 | V | VDD1 = 3.0 V, IOUT = −2.0 mA, VID ≥ −0.03 V | ||
| Short-Circuit Current | 100 | mA |
Key Features
- Signal Isolation: Provides 5.7 kV rms isolation, ensuring robust immunity to noise and system-level EMC events.
- Compliance with Standards: Passes radiated emissions testing to the EN55032 Class B standard with margin on a 2-layer PCB.
- ESD Protection: Protected against ≥±12 kV contact and ≥±15 kV air IEC61000-4-2 electrostatic discharge (ESD) events on the RS-485 A, B, Y, and Z pins.
- Cable Invert Pins: Allows quick correction of reversed cable connections while maintaining full receiver fail-safe performance.
- Supply Voltage Range: Supports a wide range of voltages (1.7 V to 5.5 V for VDD1 and 3 V to 5.5 V for VDD2).
- Package Options: Available in industry-standard 16-lead, wide-body, standard SOIC_W package with >8.0 mm creepage and clearance.
Applications
- Industrial Automation: Suitable for use in Profibus nodes and other industrial communication protocols.
- Automotive Systems: Can be used in automotive interfaces such as CAN, audio, and Ethernet.
- Long Cable Runs: Optimized for low-speed data transmission over long cable runs.
- EMC Sensitive Environments: Ideal for applications requiring high immunity to electromagnetic interference.
Q & A
- What is the maximum data rate of the ADM2461EBRWZ?
The maximum data rate of the ADM2461EBRWZ is 500 kbps.
- What is the isolation voltage of the ADM2461EBRWZ?
The ADM2461EBRWZ provides 5.7 kV rms signal isolation.
- Does the ADM2461EBRWZ comply with any specific EMC standards?
Yes, it passes radiated emissions testing to the EN55032 Class B standard with margin on a 2-layer PCB.
- What kind of ESD protection does the ADM2461EBRWZ offer?
The device is protected against ≥±12 kV contact and ≥±15 kV air IEC61000-4-2 electrostatic discharge (ESD) events on the RS-485 A, B, Y, and Z pins.
- What is the supply voltage range for the ADM2461EBRWZ?
The primary supply (VDD1) supports 1.7 V to 5.5 V, and the isolated supply (VDD2) supports 3 V to 5.5 V.
- What package options are available for the ADM2461EBRWZ?
The device is available in a 16-lead, wide-body, standard SOIC_W package with >8.0 mm creepage and clearance.
- Can the ADM2461EBRWZ correct reversed cable connections?
Yes, it features cable invert pins to allow quick correction of reversed cable connections while maintaining full receiver fail-safe performance.
- Is the ADM2461EBRWZ suitable for industrial automation applications?
Yes, it is suitable for use in Profibus nodes and other industrial communication protocols.
- What is the short-circuit current rating of the ADM2461EBRWZ?
The short-circuit current rating is 100 mA.
- Does the ADM2461EBRWZ support half-duplex and full-duplex operations?
Yes, both half-duplex and full-duplex device options are available.
