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Maxim产品 - DG421介绍

DG421 - 改进的、低功耗、带有锁存的CMOS模拟开关

DG421是Maxim美信半导体公司的一款保护器产品，DG421是改进的、低功耗、带有锁存的CMOS模拟开关，本站介绍了DG421的封装应用图解、特点和优点、功能等，并给出了与DG421相关的Maxim元器件型号供参考。

DG421 - 改进的、低功耗、带有锁存的CMOS模拟开关 - 保护器 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

Maxim's redesigned DG421/DG423/DG425 monolithic analog switches now feature guaranteed on-resistance matching (3Ω max) between switches and on-resistance flatness over the signal range (4Ω max). These low on-resistance switches (20Ω typ) conduct equally well in both directions. They guarantee a low charge injection of 15pC maximum and an ESD tolerance of 2000V minimum per Method 3015.7. Off leakage current over temperature has also been reduced (less than 5nA at +85°C).

The DG421/DG423/DG425 are precision, dual CMOS switches with latchable logic inputs that simplify interfacing with microprocessors (µPs). The single-pole/single-throw DG421 and double-pole/single-throw DG425 are normally open dual switches. The dual, single-pole/double-throw DG423 has two normally open and two normally closed switches. Fast switching times (175ns for tON and 145ns for tOFF) and low power consumption (35µW max) make these parts ideal for battery-powered applications requiring µP-compatible switches. Operation is from a single +10V to +30V supply, or bipolar ±4.5V to ±20V supplies. Fabricated with the same 44V silicon-gate process, these switches have rail-to-rail signal handling capabilities.

关键特性
  • 以下关键特性由Maxim美信半导体提供：New Features
  • Plug-In Upgrades for Industry-Standard DG421/DG423/DG425
  • Improved R(DS)ON Match Between Channels (3Ω max)
  • Guaranteed RFLAT(ON) Over Signal Range (4Ω max)
  • Improved Charge Injection (15pC max)
  • Improved Off Leakage Current Over Temperature (< 5nA at +85°C)
  • Withstands Electrostatic Discharge (2000V min) per Method 3015.7Existing Features
  • Low RDS(ON)(35Ω max)
  • Single-Supply Operation +10V to +30V
  • Bipolar-Supply Operation ±4.5V to ±20V
  • Low Power Consumption (35µW max)
  • Rail-to-Rail Signal Handling Capability
  • TTL/CMOS-Logic Compatible
    • 热门应用
  • 音频信号切换
  • 电池供电应用
  • 通信系统
  • 传真机
  • 引导与控制系统
  • 军用无线装置
  • 调制解调器
  • PBX、PABX
  • 采样保持电路
  • 测试设备
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