WMSIC Electronic Components

Chipanalog CA-IS3021S

ModelCA-IS3021S
PackageSOIC-8
BrandChipanalog
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

18 specifications

Core information

Product name
Chipanalog CA-IS3021S
Type
CHIPANALOG
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CHIPANALOG
Electronic Component
CA-IS3021S
Electronic Component
1
Package
SOIC-8
Electronic Component
Isolated I2C
Electronic Component
0.14g
Electronic Component
1
CMTI(kV/us)
150kV/us
Electronic Component
BM0228089892
Operating Temperature
40℃~+125℃
Clock
Electronic Component
Electronic Component
Electronic Component
Electronic Component
2500
Voltage(Vrms)
3750

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

CA-IS3021S 产品概述

一、产品简介

CA-IS3021S 是川土微(Chipanalog)推出的一款面向 I2C 总线的数字隔离器,设计用于在高噪声和高共模扰动环境中实现安全可靠的数据传输。器件采用 SOIC-8 封装,具备低功耗特性,针对 I2C 协议的典型需求进行了优化:SCL 为单向时钟方向传输,SDA 支持双向开漏数据线隔离,便于直接替换或集成到现有 I2C 设计中。

二、主要性能特点

  • 隔离耐压:3750 Vrms(典型),满足工业级信号隔离要求;
  • 高共模抗扰度:CMTI 达 150 kV/µs,适用于强干扰环境下的稳定通讯;
  • 工作温度范围:-40 ℃ 至 +125 ℃,适应严格的工业温度需求;
  • 低功耗设计:在保持隔离性能的同时降低静态与动态功耗,便于电池或能耗受限系统使用;
  • 封装:SOIC-8,便于标准 PCB 工艺组装与替换;
  • 协议兼容:针对 I2C 特性支持开漏/上拉结构,兼容常见主/从器件。

三、典型应用场景

  • 工业控制与自动化:用于电机控制、PLC 与现场传感器之间的隔离通讯,防止地环路与共模干扰;
  • 电源隔离与数据隔离:在隔离型电源或双电源系统中实现主控与外围器件的数据隔离;
  • 医疗设备与测试测量:保证患者侧或待测侧安全的同时传输 I2C 监测与配置数据;
  • 汽车电子(非安全关键路径):在车载电子系统中隔离传感器和控制器的 I2C 信号(需按车规应用评估)。

四、设计与使用建议

  • 上拉电阻:SDA 为双向开漏线,需在各侧按总线电容与速度正确选取上拉电阻;SCL 为单向时钟线,同样建议在驱动端或接收端按需上拉;
  • 去耦与布局:在器件电源引脚附近放置 0.1 μF 陶瓷去耦,缩短回流路径,降低共模干扰耦合;保持隔离区走线间距与 PCB 凝距满足 3750 Vrms 的安全要求;
  • 接地与屏蔽:两侧接地分离,避免通过接地引起的地环路干扰;如有必要采用屏蔽层并与参考地适当连接;
  • 温升与可靠性:在高温或大电流环境下评估封装散热,注意焊点工艺对长期可靠性的影响。

五、封装与环境适配

CA-IS3021S 提供 SOIC-8 标准封装,适合自动化贴片生产。器件工作温度覆盖 -40 ℃ 至 +125 ℃,适用于多数工业与嵌入式应用。器件的高 CMTI 与高隔离电压使其在电磁干扰与高压隔离场景下具备显著优势。

六、优势小结

CA-IS3021S 将高抗干扰能力、工业级隔离耐压与低功耗特性结合,针对 I2C 总线的时钟单向与数据双向特点进行了优化设计,适合需要可靠隔离通信且对功耗与封装成本敏感的系统。对在复杂电磁环境中保护主控与外设通信的工程师而言,是一种便捷且稳健的隔离解决方案。

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