Серия RS-485 и RS-422 ADM2761E

Общие характеристики

Раздел RS-485 и RS-422
Поддерживаемый протокол
Количество передатчиков
Количество приёмников
Максимальная скорость передачи данных
Нагрузочная способность (узлов)
Напряжение питания
Напряжение изоляции вход-выход

Документация на серию ADM2761E

5.7 kV RMS Isolated, High Working Voltage, RS-485 Transceiver with ±15 kV IEC ESD ADM2761E/ADM2763E Data Sheet FEATURES FUNCTIONAL BLOCK DIAGRAMS VDD1 VDD2 DECODE ENCODE DE ENCODE DECODE TxD ENCODE DECODE R D GND1 ISOLATION BARRIER GND2 GENERAL DESCRIPTION The ADM2761E/ADM2763E are 500 kbps, 5.7 kV rms, signal isolated RS-485 transceivers that pass radiated emissions testing to the EN 55032, Class B standard with margin on a 2-layer printed circuit board (PCB). These devices are compliant to the RS-485 and RS-422 communication standards. The ADM2761E/ ADM2763E isolation barrier provides robust system level immunity to IEC 61000-4-x system level electromagnetic compatibility (EMC) standards. The devices are suitable for applications that require insulation against working voltages of 1060 V rms and 1500 V dc for the lifetime of the device. Rev. 0 B Figure 1. ADM2761E VDD2 VDD1 ADM2763E RE RxD DECODE ENCODE INVR ENCODE DECODE TxD ENCODE DECODE DE ENCODE DECODE RS-485 TRANSCEIVER R CABLE INVERT D GND1 ISOLATION BARRIER GND2 A B Y Z 22795-002 DIGITAL ISOLATION APPLICATIONS Solar inverters Electrical test and measurement Heating, ventilation, and air conditioning (HVAC) networks Industrial field buses Building automation A 22795-001 RE RxD IEC 61000-4-2 ESD PROTECTION ADM2761E RS-485 TRANSCEIVER DIGITAL ISOLATION IEC 61000-4-2 ESD PROTECTION 5.7 kV rms, signal isolated RS-485 transceiver 1500 V peak and dc working voltage to DIN V VDE 0884-11 Low radiated emissions: passes EN 55032, Class B with margin on a 2-layer PCB Receiver cable inversion smart feature (ADM2763E) Correction for reversed cable connection on A and B bus pins while maintaining full receiver fail-safe feature ESD protection on the RS-485 A, B, Y, and Z bus pins ≥±12 kV IEC 61000-4-2 contact discharge ≥±15 kV IEC 61000-4-2 air discharge Low speed 500 kbps data rate for EMI control Flexible power supply inputs Primary VDD1 supply of 1.7 V to 5.5 V Isolated VDD2 supply of 3.0 V to 5.5 V PROFIBUS compliant for 5 V VDD2 Wide −40°C to +125°C operating temperature range 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 and power-down) Safety and regulatory approvals (pending) CSA Component Acceptance Notice 5A, DIN V VDE 0884-11, UL 1577, CQC11-471543-2012, IEC 61010-1 16-lead, wide-body, SOIC_W package with 8.3 mm creepage and clearance in standard pinout Figure 2. ADM2763E The devices are protected against ≥±12 kV contact and ≥±15 kV air IEC 61000-4-2 electrostatic discharge (ESD) events on the RS-485 A, B, Y, and Z pins. The ADM2763E features a receiver cable invert pin to allow quick correction of the reversed cable connection on the A and B receiver bus pins while maintaining full receiver fail-safe performance. These devices are optimized for low speed over long cable runs and have a maximum data rate of 500 kbps. The high differential output voltage makes these devices suitable for PROFIBUS® nodes when powered with 5 V on the VDD2 supply. The VDD1 primary supply and VDD2 isolated supply both support a wide range of voltages (1.7 V to 5.5 V and 3.0 V to 5.5 V, respectively). Half-duplex and full duplex device options are available in the industry standard 16-lead, wide body, standard SOIC_W package with 8.3 mm creepage and clearance. Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2020 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com PDF
Документация на серию ADM2761E 

ADM2761E/ADM2763E (Rev. 0) 5.7 kV RMS Isolated, High Working Voltage RS-485 Transceiver with ±15 kV IEC ESD

Дата модификации: 18.06.2020

Размер: 527.1 Кб

24 стр.

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