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MAX4505：故障保护、高电压、信号线路保护器

The MAX4505 is a single signal-line protector featuring a fault-protected input and rail-to-rail signal handling capability. The input is protected from overvoltage faults up to ±36V with power on or ±40V with power off. During a fault condition, the input terminal becomes an open circuit and only nanoamperes of leakage current flow from the source, while the switch output (AOUT) furnishes typically 19mA from the appropriate polarity supply to the load. This ensures an unambiguous rail-to-rail output when a fault begins and ends. The MAX4505 protects both unipolar and bipolar analog signals using either unipolar (+9V to +36V) or bipolar (±8V to ±18V) power supplies. The device has no logic control inputs; the protector is always on when the supplies are on. On-resistance is 100Ω max, and on-leakage is less than 0.5nA at TA = +25°C. The MAX4505 is available in 5-pin SOT23 and 8-pin µMAX® packages.

关键特性 Overvoltage Protection ±40V with Power Off ±36V with Power On Open Signal Paths with Power Off Output Clamps to Either Rail with an Input Overvoltage 100Ω max On-Resistance 10ns Overvoltage Turn-On Delay No Latchup During Power Sequencing Rail-to-Rail Signal Handling 500Ω Output Clamp Resistance During Overvoltage Tiny 5-Pin SOT23 Package

MAX4505：典型工作电路 应用 自动测试设备(ATE) 数据采集 热插拔板/系统 过程控制系统 冗余/备份系统 高灵敏度仪表

数据手册DataSheet

关键参数

技术资料

• Fault-Tolerant Analog Switches

质量和环境数据

• MAX4505.pdf

订购型号