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Chipanalog CA-IS3721CHS
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Chipanalog CA-IS3721CHS
- Type
- CHIPANALOG
- Minimum package
- 2500 卷
Technical parameters
- Electronic Component
- CHIPANALOG
- Electronic Component
- CA-IS3721CHS
- Electronic Component
- 1
- Package
- SOIC-8
- Electronic Component
- Isolated
- Electronic Component
- 0.195g
- Electronic Component
- 1
- CMTI(kV/us)
- 150kV/us
- Features
- Output
- Electronic Component
- BM0228740294
- Operating Temperature
- 40℃~+125℃
- Output
- Level
- Channel Count
- 1
- Channel Count
- 1
- (tpd)
- 22ns
- Operating Voltage(VCCA)
- 3V~5.5V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
CA-IS3721CHS 产品概述
一、简介
CA-IS3721CHS 是川土微（Chipanalog）推出的一款隔离数字信号器件，面向工业控制、通信接口和电源管理等场景。器件提供高共模抗扰能力与3750 Vrms的隔离等级，支持双向信号隔离（正向通道1、反向通道1），在恶劣电磁环境中能可靠传输低延迟数字数据。
二、主要特性
- 最大数据速率：40 Mbps，适合中速串行总线与开关信号。
- 默认输出电平：高电平（Fail-safe 默认态），便于上电与异常状态的安全处理。
- 隔离电压（Vrms）：3750，满足大多数工业隔离要求。
- 工作电压：VCCA 3.0 V ~ 5.5 V，VCCB 3.0 V ~ 5.5 V，适配3.3V与5V系统。
- 传播延迟（tpd）：约22 ns，可实现低延时控制与同步。
- CMTI（共模瞬变抗扰度）：150 kV/µs，抗干扰能力强。
- 工作温度范围：-40 ℃ ~ +125 ℃，适合严苛环境。
- 封装：SOIC-8，便于PCB布局和自动化贴装。
三、优势亮点
- 强隔离与高CMTI：3750 Vrms 与 150 kV/µs 的组合，能有效隔离地电位差并抵抗快速共模瞬变，适合驱动侧与被驱动侧地电位不一致的应用。
- 宽电压兼容性：两侧供电范围均为3.0~5.5V，降低不同逻辑电平系统互联的复杂度。
- 可靠的默认态：输出默认高电平，有利于防止上电或故障时产生误动作，提升系统安全性。
- 低延迟：22 ns 的传播延迟适合需要快速响应的控制回路。
四、典型应用
- 工业现场总线、串行接口隔离（如RS-485、SPI 等中低速链路）
- 电机驱动控制信号隔离与编码器信号传输
- 电源与逆变器控制回路的数字隔离
- PLC、测量与数据采集系统的信号隔离
五、设计与使用建议
- 电源去耦：建议在VCCA和VCCB各自靠近器件引脚放置0.1µF与1µF的陶瓷电容，降低电源噪声影响。
- PCB布局：尽量将两侧地（GND_A、GND_B）明确分区，隔离边界留足间距并避免过孔短接，保持隔离距离与爬电距离。
- 输入/输出终端：依据通信线特性配置合适的上拉/下拉或终端电阻；默认高电平输出可用作上电安全策略的一部分。
- 共模瞬变防护：在高共模干扰环境下，配合差分滤波或RC滤波器降低输入瞬态对逻辑的影响。
- 温度管理：器件支持-40~125℃，但在高温与高功率密度PCB上仍需注意散热与热可靠性设计。
六、封装与可靠性
CA-IS3721CHS 提供常见的 SOIC-8 封装，便于批量生产与更换。器件的电气与环境参数适配工业级应用，推荐在设计验证阶段进行实际系统下的隔离与抗扰测试，确保满足系统级安全与 EMC 要求。
总结：CA-IS3721CHS 是一款面向工业及电源控制应用的高性能数字隔离器，结合高隔离电压、强抗扰度、宽供电范围与低延迟特性，为需要可靠隔离与快速响应的系统提供稳健解决方案。
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