Analog Devices Inc. ADN4650 / ADN4651 / ADN4652 LVDS隔離器

類比設備 ADN4650/ADN4651/ADN4652雙通道低電壓差分訊號(LVDS)隔離器可以極低的70ps抖動實現高達600Mbps的運作效能。ADN4650/ADN4651/ADN4652隔離器採用可實現高速運作的iCoupler技術。該技術提供相容於TIA/EIA-644-A的全速LVDS驅動器和接收器電流隔離。其設計允許LVDS訊號鏈的降壓式隔離。LVDS和隔離器電路透過2.5V電源實現低抖動的高速運作。整合式晶片上LDO透過外部3.3V電源提供所需的2.5V電壓。這些設備適用於-40°C至+125°C的工業溫度範圍，具有5kVrms隔離和7.6mm爬電/間隙。為確保在惡劣環境下安全、快速的資料傳送，ADN4650/ADN4651/ADN4652隔離器符合10kV峰值浪湧保護要求。ADN4650/ADN4651/ADN4652隔離器充分適用於類比前段(AFE)隔離、資料面隔離、隔離高速時鐘和資料鏈，以及LVDS上的隔離SPI。

特點

5kVrms/3.75kVrms LVDS isolator
Complies with TIA/EIA-644-A LVDS standard
Multiple dual-channel configurations
Up to 600Mbps switching with low jitter
2.5V or 3.3V supplies
-75dBc power supply ripple rejection and glitch immunity
±8kV IEC 61000-4-2 ESD protection across an isolation barrier

High common-mode transient immunity >25kV/μs
Fail-safe output high for open, short, and terminated input conditions (ADN4651)
Passes EN55022 Class B radiated emissions limits with 600Mbps PRBS or 300MHz clock
Operating temperature range −40°C to +125°C
Fail-safe output high for open, short, and terminated input conditions (ADN4651/ADN4652)
Choice of package and isolation options
- 3.75kVrms in highly integrated 20-lead SSOP
- 5kVrms in 20-lead SOIC with 7.8mm creepage/clearance