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故障保护、高电压、信号线路保护器

产品详情

主要特征

应用/用途

Parametric specs for Signal-Line Protectors
Functions 1-Line
Signal Path Leakage (±nA) (max) 20
ΔRON 10
VSUPPLY (V) 9.0 to 36.0
VSUPPLY (Dual) (±V) (Dual) 8 to 18
RON (Ω) (max) 100
Fault Protect. (±V) 40
Package/Pins SOT23/5
Budgetary
Price (See Notes)
1.69
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简化框图

技术文档

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参量

Parametric specs for Signal-Line Protectors
Functions 1-Line
Signal Path Leakage (±nA) (max) 20
ΔRON 10
VSUPPLY (V) 9.0 to 36.0
VSUPPLY (Dual) (±V) (Dual) 8 to 18
RON (Ω) (max) 100
Fault Protect. (±V) 40
Package/Pins SOT23/5
Budgetary
Price (See Notes)
1.69

主要特征

  • 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

应用/用途

  • 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

描述

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.

简化框图

MAX4505:典型工作电路 MAX4505:典型工作电路 Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心