ADM2861E

RECOMMENDED FOR NEW DESIGNS

5.7 kV RMS 500kbps Half Duplex 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 $6.21

Viewing:

Part Details

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

Part Models: 2
1ku List Price: Starting From $6.21

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
ADM2861EBRNZ	28-Lead SOIC (Wide, Finer Pitch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
ADM2861EBRNZ-RL7	28-Lead SOIC (Wide, Finer Pitch)	Material Declaration Reliablity Data	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

ADM2861E IBIS Model

Evaluation Kits

ADM2861E Evaluation Board

Buy Now View Details

Features and Benefits

Simplified evaluation of the ADM2561E and ADM2861E 500 kbps half-duplex, isolated RS-485 transceiver
2-layer PCB compliant to EN 55032/CISPR 32 Class B radiated emissions
Footprint for 10.15 mm × 10.05 mm, 28-lead SOIC_W_FP package with 8.3 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 for interfacing with I/O nodes as low as 1.7 V
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
SMA connector for TxD input signal
Optional on-board LTC6900 oscillator for providing TxD signal
Screw terminal blocks for connecting power, digital signals, and RS-485 signals
Jumper selectable enable and disable for digital input signals
Resistors and footprints for loopback test and termination
Test points for measuring all signals

Product Details

The EVAL-ADM2561EEBZ and the EVAL-ADM2861EEBZ allow the simplified, efficient evaluation of the 3 kV rms ADM2561E and the 5.7 kV rms ADM2861E signal and power, isolated half-duplex RS-485 transceivers, respectively. The ADM2561E and the ADM2861E transceivers are available in a small footprint, 10.15 mm × 10.05 mm, 28-lead, small outline, wide body, with fine pitch (SOIC_W_FP) package. The evaluation boards differ only by the isolated RS-485 device populated on U3.

The ADM2561E and the ADM2861E feature 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 ADM2561E and the ADM2861E. The LDO regulator can be bypassed to power the V_CC pin of the ADM2561E and the ADM2861E directly.

A screw terminal block on the evaluation boards allows connection to the flexible V_IO logic supply pin of the ADM2561E/ADM2861E. This connection allows the ADM2561E/ADM2861E to operate with a digital input/output (I/O) voltage from 1.7 V to 5.5 V, which enables communication with 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.

Digital and RS-485 bus signals are easily accessible via the screw terminal blocks on each evaluation board. Each digital input is configured via the on-board jumper options.

Alternative methods can provide the transmit data input (TxD) signal to the ADM2561E or the ADM2861E. An LTC6900 oscillator is included on each evaluation board and can be optionally configured to provide a clock signal for the TxD digital input within a 1 kHz to 250 kHz range. For optimal signal integrity, use the on-board Subminiature Version A (SMA) connector to connect an external data signal.

For full details on the ADM2561E or the ADM2861E, see the ADM2561E or the ADM2861E data sheet, which must be consulted in conjunction with this user guide when using the EVAL-ADM2561EEBZ and the EVAL-ADM2861EEBZ.

Resources

UG-1804: Evaluating the 3 kV RMS ADM2561E and the 5.7 kV RMS ADM2861E, 500 kbps Signal and Power Isolated, Half-Duplex RS-485 Transceivers with ±15 kV IEC ESD (Rev.A)
6/11/2020

Latest Discussions

No discussions on ADM2861E yet. Have something to say?

Start a Discussion on EngineerZone®