WMSIC Electronic Components

Chipanalog CA-IS3742HN

ModelCA-IS3742HN
PackageSOIC-16
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 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Chipanalog CA-IS3742HN
Type
CHIPANALOG
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CHIPANALOG
Electronic Component
CA-IS3742HN
Electronic Component
1
Package
SOIC-16
Electronic Component
Isolated
Electronic Component
0.197g
Electronic Component
1
CMTI(kV/us)
150kV/us
Features
Output
Electronic Component
BM0228740293
Operating Temperature
40℃~+125℃
Output
Level
Channel Count
2
Channel Count
2
(tpd)
12ns

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

CA-IS3742HN 数字隔离器产品概述

一、产品简介

CA-IS3742HN 是 Chipanalog(川土微)推出的一款高性能数字隔离器,封装为 SOIC-16。器件在两侧各自供电(VCCA、VCCB 均支持 2.5V5.5V),能够在不同电平域之间实现高速、安全的信号传输。该器件提供两个正向通道和两个反向通道,最大数据速率可达 150 Mbps,传播延迟约 12 ns,隔离电压额定达到 3750 Vrms,工作温度覆盖 -40℃+125℃,并具有 150 kV/µs 的高抗共模瞬变能力(CMTI),适合工业与电力电子等复杂电磁环境下的隔离需求。

二、主要特点

  • 支持高达 150 Mbps 的数字数据传输,满足高速串行接口要求。
  • 双向结构:2 个正向通道 + 2 个反向通道,便于实现双向或多信号隔离。
  • 默认输出为高电平(器件上电或失能状态下输出为高),便于系统复位与故障态定义。
  • 工作电压范围宽(VCCA、VCCB 均为 2.5V~5.5V),可直接用于不同电压域之间的电平翻译。
  • 高绝缘等级:3750 Vrms 隔离电压,满足多数工业隔离要求。
  • 高共模瞬变抗扰度(CMTI)150 kV/µs,适应快速开关或强干扰环境。
  • 宽温度范围 -40℃~+125℃,适用于工业级温度场景。
  • 采用 SOIC-16 封装,便于 PCB 布局与批量生产。

三、典型应用

  • 工业现场总线隔离(如隔离的 UART/TTL、SPI、I2C 信号链路设计时配合开漏器件需注意)。
  • 与隔离型 CAN/RS-485/RS-232 收发器配合,用于电源系统、变频器、PLC 等设备的控制与监测通道隔离。
  • 功率电子控制板(逆变器、太阳能逆变器、UPS)中 MCU 与高压侧信号的隔离传输。
  • 数据采集模块与传感器隔离,降低共模噪声影响,保证测量精度。
  • 需要高 CMTI 的场景,如与大功率开关器件、IGBT 驱动或电机驱动系统同板工作。

四、设计注意事项

  • 电源去耦:在 VCCA、VCCB 近侧分别放置 0.1µF 陶瓷去耦,且靠近器件引脚布置,减少瞬变电流对通信性能的影响。
  • 布局隔离区:保持输入域与输出域的走线与地平分离,确保满足所需爬电距离与间隙。SOIC-16 外形下注意两侧电源与信号的布线过孔和铜皮。
  • 信号完整性:高速信号线尽量短并加阻抗匹配或串联小电阻以抑制反射;对 150 Mbps 近极限速率应用可做差分或屏蔽处理。
  • 默认高电平行为:系统设计时应考虑默认输出为高的状态对上位电路复位与故障安全的影响,必要时增加上拉/下拉或复位电路。
  • 共模瞬变场景下,若需更高稳健性,可在器件两侧增加滤波或缓冲,避免直接将强干扰施加到输入端口。

五、封装与引脚建议

CA-IS3742HN 采用 SOIC-16 封装,适合集成到标准工业 PCB。建议在 PCB 设计时为每侧的 VCC 与 GND 提供明确的电源分割与独立去耦,信号线避开高压或高速开关走线,遵循隔离间距规范以保证 3750 Vrms 的隔离性能长期可靠。

总结:CA-IS3742HN 在速度、隔离等级和抗干扰能力之间取得了良好平衡,适用于对可靠性和抗扰度有较高要求的工业与电力电子隔离通信场景。若需替代型号或更详细的电气参数(典型传输曲线、引脚排列、绝对最大额定值和时序图),建议参考原厂数据手册或联系 Chipanalog 技术支持。

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