Analog Devices Inc. ADN4650/ADN4651/ADN4652 LVDS隔离器
Analog Devices ADN4650/ADN4651/ADN4652 双通道低电压差分信号 (LVDS) 隔离器可在高达 600Mbps 的条件下工作，具有 70ps 的超低抖动。ADN4650/ADN4651/ADN4652 隔离器采用 iCoupler 技术实现高速运行。这种技术提供符合全速时 LVDS 驱动器和接收器的 TIA/EIA-644-A 标准的电流隔离。 该设计能够实现 LVDS 信号链的即用式隔离。LVDS 和隔离电路依靠 2.5V 电源实现低抖动的高速运行。集成的片上 LDO 从外部 3.3V 电源提供所需的 2.5V。该器件的指定工业温度范围是 -40°C 至 +125°C，隔离为 5kVrms，爬电距离/电气间隙为 7.6mm。为了保证在恶劣环境下进行安全、快速的数据传输，ADN4650/ADN4651/ADN4652 隔离器满足 10kV 峰值浪涌保护要求。ADN4650/ADN4651/ADN4652隔离器非常适合用于模拟前端 (AFE) 隔离、数据平面的隔离、隔离式高速时钟和数据链路以及基于LVDS的隔离式串行外设接口 (SPI)。
特性
- 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
应用
- Analog front-end (AFE) isolation
- Data plane isolation
- Isolated high-speed clock and data links
- Isolated SPI over LVDS
Block Diagrams
发布日期: 2016-04-01
| 更新日期: 2022-03-11