ADM2867E

RECOMMENDED FOR NEW DESIGNS

5.7 kV RMS Signal and Power Isolated RS-485 Transceiver with ±15 kV IEC ESD

Data Sheet (Rev. D) Product Selection Table

Part Models: 2
1ku List Price: Starting From $7.69

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Overview

5.7 kV rms isolated RS-485/RS-422 transceiver
Low radiated emissions, integrated, isolated dc-to-dc converter
Passes EN 55032 Class B with margin on a 2-layer PCB
Cable invert smart feature
- Correct reversed cable connection on A, B, Y, and Z bus pins while maintaining full receiver fail-safe feature
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 25 Mbps data rate (ADM2865E/ADM2867E)
Low speed 500 kbps data rate for EMI control (ADM2861E/ADM2863E)
Flexible power supplies
- Input V_CC supply of 3 V to 5.5 V
- Logic V_IO supply of 1.7 V to 5.5 V
- V_SEL pin to select V_ISO supply of 5 V (V_CC > 4.5 V) or 3.3 V

PROFIBUS compliant for 5 V V_ISO
Wide operating temperature range: −40°C to +105°C
High common-mode transient immunity: 250 kV/μs
Short-circuit, open-circuit, and floating input receiver fail-safe
Supports 192 bus nodes (72 kΩ receiver input impedance)
Full hot swap support (glitch free power-up/power-down)
Safety and regulatory approvals (pending)
Regulatory Information
UL 1577
- VISO = 5700 V rms for 1 minute
IEC/EN/CSA 62368-1
IEC/CSA 60601-1
IEC/CSA 61010-1
CQC GB4943.1
DIN EN IEC 60747-17 (VDE 0884-17) (pending)
- V_IORM = 565 V peak
28-lead, fine pitch SOIC_W package (10.15 mm × 10.05 mm) with >8.0 mm creepage and clearance

The ADM2861E, ADM2863E, ADM2865E, and ADM2867E are 5.7 kV rms signal and power isolated RS-485 transceivers. These devices are designed for balanced transmission lines and comply with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E). The devices pass radiated emissions testing to the EN 55032 Class B standard with margin on a 2-layer printed circuit board (PCB) using two small external 0402 ferrites on isolated power and ground pins. The device features an integrated, low electromagnetic interference (EMI), isolated dc-to-dc converter, which eliminates the need for an external isolated power supply. The isolation barrier provides immunity to system level electromagnetic compatibility (EMC) standards. The family of isolator devices features ±12 kV contact and ±15 kV air IEC61000-4-2 ESD protection on the RS-485 A, B, Y, and Z pins. The devices also features cable invert pins, allowing the user to quickly correct reversed cable connection on the A, B, Y, and Z bus pins while maintaining full receiver fail-safe performance.

Slew rate limited versions are available, which are optimized for low speed over long cable runs, and have a maximum data rate of 500 kbps. Half duplex and full duplex variants are available. The full duplex generics allow independent cable inversion of the driver and receiver for additional flexibility.

Applications

Heating, ventilation, and air conditioning (HVAC) networks
Industrial field buses
Building automation
Utility networks
Energy meters

Part Models: 2
1ku List Price: Starting From $7.69

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
ADM2867EBRNZ	28-Lead SOIC (Wide, Finer Pitch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADM2867EBRNZ-RL7	28-Lead SOIC (Wide, Finer Pitch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
Analog to Digital Converters (ADCs) 3
AD4000	PRODUCTION	16-Bit, 2 MSPS/1 MSPS/500 kSPS, Precision, Pseudo Differential, SAR ADCs
AD4004	RECOMMENDED FOR NEW DESIGNS	16-Bit, 2 MSPS/1 MSPS/500 kSPS, Precision, Pseudo Differential, SAR ADCs
AD4008	RECOMMENDED FOR NEW DESIGNS	16-Bit, 2 MSPS/1 MSPS/500 kSPS, Precision, Pseudo Differential, SAR ADCs
Microcontrollers 3
ADuCM3027	RECOMMENDED FOR NEW DESIGNS	Ultra Low Power ARM Cortex-M3 MCU with Integrated Power Management and 128 KB of Embedded Flash Memory

ADuCM3029	RECOMMENDED FOR NEW DESIGNS	Ultralow-Power ARM Cortex-M3 MCU with Integrated Power Management and 256 KB of Embedded Flash Memory
ADuCM4050	RECOMMENDED FOR NEW DESIGNS	Ultra Low Power ARM Cortex-M4F MCU with Integrated Power Management
Switching Regulators & Controllers 1
ADP2384	RECOMMENDED FOR NEW DESIGNS	20 V, 4 A, Synchronous Step-Down DC-to-DC Regulator

Tools & Simulations

IBIS Model 1

ADM2867E IBIS Model

Evaluation Kits

ADM2867E Evaluation Board

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Features and Benefits

Simplified evaluation of the 25 Mbps ADM2867E RS-485 transceiver
2-layer PCB compliant to EN 55032 Class B radiated emissions
Footprint for 10.15 mm × 10.05 mm, 28-lead SOIC_W_FP package with >8.0 mm creepage and clearance
On-board ADP7104 LDO regulator with jumper options for simplified evaluation in 5 V or 3.3 V configuration
Flexible, low voltage V_IO supply rail to interface with I/O nodes as low as 1.7 V
Selectable 3.3 V or 5 V isolated supply voltage options available
IEC 61000-4-2 ESD protection on the A, B, Y, and Z pins

±12 kV contact discharge and ±15 kV air discharge
SMA connector for high speed 25 Mbps TxD input signal
Optional on-board LTC6900 oscillator to provide TxD input signal
Screw terminal blocks for power connections, digital signals, and RS-485 signals
Jumper-selectable enable and disable for digital input signals
Resistors and footprints for termination and loopback test
Test points to measure all signals

Product Details

The EVAL-ADM2867EEBZ allows the simplified, efficient evaluation of the 5.7 kV rms ADM2867E signal and power isolated RS-485 transceiver.

The ADM2867E features an integrated, isolated, dc-to-dc converter that provides power to the isolated side of the device with no additional ICs required.

An on-board ADP7104 low dropout (LDO) regulator accepts an input voltage of 3.3 V to 20 V and regulates the voltage to a selectable 3.3 V or 5 V supply for the V_CC pin of the ADM2867E. The LDO regulator can be bypassed to power the V_CC pin of the ADM2867E directly.

A flexible logic V_IO supply allows the device to operate with a digital input/output (I/O) voltage from 1.7 V to 5.5 V, which enables communication with modern nodes using either a 1.8 V or 2.5 V power supply. The V_IO pin can also be supplied from the ADP7104 regulated supply.

The EVAL-ADM2867EEBZ comes with options to evaluate the ADM2867E in an individual system. Digital and RS-485 bus signals are accessible via the screw terminal blocks on the EVALADM2867EEBZ. Each digital input can be configured via the on-board jumper options.

Alternative methods can provide the transmit data input (TxD) signal to the device. An optional LTC6900 oscillator is included on the EVAL-ADM2867EEBZ and can be configured to provide a clock signal as the TxD digital input within a 1 kHz to 20 MHz range. For optimal signal integrity, use the on-board Subminiature Version A (SMA) connector to connect an external TxD signal at high data rates up to 25 Mbps.

The EVAL-ADM2867EEBZ has a footprint for the full duplex, isolated, RS-485 transceiver in a 10.15 mm × 10.05 mm, 28-lead, small outline, wide body with fine pitch (SOIC_W_FP) package. The EVAL-ADM2867EEBZ is populated with the ADM2867E 5.7 kV rms, isolated RS-485 transceiver.

For full details on the ADM2867E, see the ADM2867E data sheet, which must be used in conjunction with this user guide when using the EVAL-ADM2867EEBZ.

Resources

UG-1677: EVAL-ADM2867E User Guide (Rev.0)
5/13/2020

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ADM2867E

Overview

Documentation

Data Sheet 1

User Guide 1

Technical Articles 1

Informational 2

Safety and Regulatory Compliance 1

Video 3

3rd Party Solutions 1