ADIADM2795E5kVrms绝缘RS-485收发器解决方案

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'ADIADM2795E5kVrms绝缘RS-485收发器解决方案'
ADI ADM2795E 5kVrms绝缘RS ? 485收发器解决方案时间:2017-01-06 16:50:11 作者:ADI 来源:中电网ADI公司的ADM2795E是5kVrms信号绝缘RS-485收发器.釆用ADI公司的iCoupler技术, 集成了 3路绝缘器,RS-485收发器和IEC电磁兼容(EMC)瞬态保护,IEC 61000-4-5 Level 4 浪涌保护,RS?485总线引脚保护电圧±4 kV,RS-485接口引脚保护高达±15 kV,工作温度-40°C 到+125°C,主要用在加热,通风设备和空调(HVAC)网络,工业现场总线,建筑物自动化和公用 事业网络?本文介绍了 ADM2795E主要特性,框图,几种应用测试图以及评估板 EVAL-ADM2795EEBZ主要特性,电路图,材料清单和PCB设计图.The ADM2795E is a 5 kV rms signal isolated RS-485 transceiver that features up to ±42 V of ac / de peak bus overvoltage fault protec-tion on the RS-485 bus pins. The device integrates Analog Devices, Inc., iCoupler technology to combine a 3-channel isolator, RS-485 transceiver, and IEC electromagnetic compatibility (EMC) t「ansient protect!on in a single package. The ADM2795E is a RS-485 / RS-422 transceiver that integrates IEC 61000-4-5 Level 4 surge protection, allowing up to ±4 kV protection on the RS-485 bus pins (A and B). The device has IEC 61000-4-4 Level 4 EFT protection up to ±2 kV and IEC 61000-4-2 Level 4 ESD protection on the bus pins, allowing this device to withstand up to ±15 kV on the transceiver interface pins without latching up. This device has an extended common-mode in put range of ±25 V to improve data comm un ication reliability in noisy environments. The ADM2795E is capable of operating over wide power supply ranges, with a 1.7 V to 5.5 V VDD1 power supply ran ge, allowing in terfacing to low voltage logic supplies. The ADM2795E is also fully TIA / EIA RS-485 / RS-422 compliant when operated over a 3 V to 5.5 V VDD2 power supply. The device is fully characterized over an extended operating temperature range of -40°C to +125°C, and is available in a 16-lead, wide-body SOIC package?ADM2795E主要特性:5 kV rms isolated RS-485 / RS-422 transceiver±42 V ac / de peak fault protection on RS-485 bus pins Certified Level 4 EMC protection on RS-485 A, B bus pins IEC 61000-4-5 surge protection (±4 kV)IEC 61000-4-4 electrical fast transient (EFT) protection (±2 kV)IEC 61000-4-2 electrostatic discharge (ESD) protection±8 kV con tact discharge±15 kV air dischargeIEC 61000-4-6 conducted radio frequency (RF) immunity (10 V / m rms)Certified IEC 61000-4-x immunity across isolation barrierIEC 61000-4-2 ESD, IEC 61000-4-4 EFT, IEC 61000-4-5 surge, IEC 61000-4-6 conducted RF immunity, IEC 61000-4-3 radiated immunity, IEC 61000-4-8 magnetic immunity RS-485 A, B pins human body model (HBM) ESD protection: >±30 kVSafety and regulatory approvals (pending)CSA Component Acceptance Notice 5A, DIN V VDE V 0884-10, UL 1577, CQC11-471543-2012TIA / EIA RS-485 / RS-422 compliant over full supply range3 V to 5.5 V operating voltage range on VDD21.7 V to 5.5 V operating voltage range on VDD1 logic supplyCommon-mode in put range of -25 V to +25 VHigh comm on-mode transient imm unity: >75 kV / psRobust noise immunity (tested to the IEC 62132-4 standard)Passes EN55022 Class B radiated emissions by 6 dBpV / m margin Receiver short-circuit, ope n-circuit, and flo
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ADIADM2795E5kVrms 绝缘 RS 485 收发 解决方案
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