Overview
The ADM2565EBRNZ from Analog Devices Inc. is a 3 kV rms signal and power isolated RS-485 transceiver. This device is designed for balanced transmission lines and complies with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E) standards. It features an integrated, isolated dc-to-dc converter and is optimized for low radiated emissions, making it suitable for various industrial and commercial applications. The transceiver supports high-speed data rates of up to 25 Mbps and includes several protective features such as ESD protection and cable invert detection.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Maximum Data Rate | 25 | Mbps | |||
| Propagation Delay (tDPLH, tDPHL) | 18 | 25 | ns | RL = 54 Ω, CL1 = CL2 = 100 pF | |
| Output Skew (tSKEW) | 1.5 | 5 | ns | RL = 54 Ω, CL1 = CL2 = 100 pF | |
| Rise Time/Fall Time (tDR, tDF) | 4.5 | 10 | ns | RL = 54 Ω | |
| Isolated Supply Current (IISOIN) | 55 | 75 | mA | VISOIN = 3 V to 3.465 V, 54 Ω between Y and Z | |
| Isolated DC-to-DC Converter Output Voltage (VISO) | 3 | 3.3 | 3.465 | V | VSEL = GNDISO, IISOOUT = 10 mA to 55 mA |
| Operating Temperature Range | -40 | 105 | °C | ||
| Package Type | 28-Lead SOIC_W_FP |
Key Features
- 3 kV rms signal and power isolation
- Integrated, isolated dc-to-dc converter
- Low radiated emissions, compliant with EN 55032 Class B standard
- Cable invert smart feature to correct reversed cable connections
- ESD protection on RS-485 A, B, Y, and Z pins (≥±12 kV IEC61000-4-2 contact discharge, ≥±15 kV IEC61000-4-2 air discharge)
- High-speed data rate of up to 25 Mbps (ADM2565E/ADM2567E)
- Flexible power supplies
- 28-lead, fine pitch SOIC_W package with >8.0 mm creepage and clearance
Applications
- Heating, ventilation, and air conditioning (HVAC) networks
- Industrial field buses
- Building automation
- Utility networks
- Energy meters
Q & A
- What is the maximum data rate of the ADM2565EBRNZ?
The maximum data rate of the ADM2565EBRNZ is 25 Mbps. - What is the operating temperature range of the ADM2565EBRNZ?
The operating temperature range is -40°C to +105°C. - Does the ADM2565EBRNZ have ESD protection?
Yes, it has ESD protection on RS-485 A, B, Y, and Z pins (≥±12 kV IEC61000-4-2 contact discharge, ≥±15 kV IEC61000-4-2 air discharge). - What type of package does the ADM2565EBRNZ come in?
The ADM2565EBRNZ comes in a 28-lead, fine pitch SOIC_W_FP package. - Is the ADM2565EBRNZ compliant with any specific standards?
Yes, it complies with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E) standards. - What is the isolated supply current range for the ADM2565EBRNZ?
The isolated supply current range is 55 mA to 75 mA. - Does the ADM2565EBRNZ have an integrated dc-to-dc converter?
Yes, it has an integrated, isolated dc-to-dc converter. - What are some common applications for the ADM2565EBRNZ?
Common applications include HVAC networks, industrial field buses, building automation, utility networks, and energy meters. - How does the ADM2565EBRNZ handle radiated emissions?
The device passes radiated emissions testing to the EN 55032 Class B standard with margin on a 2-layer PCB. - Does the ADM2565EBRNZ have a cable invert detection feature?
Yes, it has a cable invert smart feature to correct reversed cable connections.
