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ADI/LINEAR MAX14778ETP+T MAX14778ETP
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ADI(Analog Devices) / LINEAR MAX14778ETP+T
- Type
- ADI/LINEAR
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ADI(Analog Devices) / LINEAR
- Electronic Component
- MAX14778ETP+T
- Electronic Component
- 1
- Package
- TQFN-EP-20
- Electronic Component
- 75MHz
- Electronic Component
- Analog Switch / Multiplexer
- Electronic Component
- 0.001g
- Electronic Component
- 1
- Channel Count
- 2
- Features
- Analog; ESD
- Electronic Component
- BM0258831079
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 3V~5.5V
- Switch
- 4:1
- (ton)
- 2ms
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MAX14778ETP+T 产品概述
一、产品简述
MAX14778ETP+T 是 Analog Devices（原 Maxim/Linear）系列中的一款高性能模拟多路复用器，集成两路独立的 4:1 开关电路。器件工作电压范围为 3.0V 至 5.5V，适用于常见的单电源数字/模拟系统，封装为 TQFN-EP-20，便于在空间受限的便携设备或高密度电路板上部署。
二、主要特性
- 模拟多路复用：每路为 4:1，整片提供两路独立通道，适合双通道信号选择或冗余设计。
- 低导通电阻：典型导通电阻 Ron = 1.5Ω，保证较小的信号衰减与低压降，适用于低电阻要求的模拟路径。
- 响应速度：导通时间 (ton) ≈ 2 ms，关闭时间 (toff) ≈ 1.5 ms，满足多数开关切换不要求极低延时的系统。
- 带宽：75 MHz，可支持较宽频带的模拟信号传输，适合音频、低速视频或宽带传感器信号。
- 电压与温度：工作电压 3V–5.5V，工作温度范围 -40℃ 至 +85℃，适应工业级环境。
三、优势与设计亮点
- 低 Ron 提高信号完整性，特别在低阻抗源或需精确测量的通道中作用明显。
- 双通道 4:1 结构在多信号采集、测量切换或双路冗余切换中具有高集成度，减少外部器件数量与 PCB 面积。
- 75 MHz 带宽配合低 Ron，使其在模拟前端、音视频切换和传感器多路选择中表现良好。
- 宽电源范围兼容多种数字系统供电方案，便于移植与系统整合。
四、典型应用
- 多通道传感器数据采集与选择（温度、压力、流量等）
- 音频/低速视频信号切换与路由
- 多路模拟测量前端（ADC 输入多路复用）
- 测试与测量设备中的信号多路分配与切换
- 便携式与工业控制系统中需要体积小、功耗低的切换器件
五、封装与选型建议
器件封装为 TQFN-EP-20（带露铜散热垫），在高密度 PCB 设计中有利于热管理与布局紧凑。选型时建议关注：
- 系统最大信号带宽与 Ron 对信号失真、增益误差的影响；必要时在 PCB 布线中控制走线阻抗与寄生电容。
- 开关的导通/关闭时间是否满足系统切换节奏，若需更快响应应评估替代方案或并联控制策略。
- 工作环境温度与长期可靠性，TQFN-EP 有利于散热但需注意焊接工艺与热应力管理。
六、使用注意事项
- 在高频或快速切换场景下，关注开关切换突波和带来的瞬态，可通过缓冲、RC 抑制或上升沿控制优化。
- 由于 Ron 为 1.5Ω 级别，若信号源或负载阻抗极低，仍需评估电压分压影响与功率耗散。
- 推荐参考生产厂商的评估电路与布局指南以获得最佳信号完整性与热性能。
总结：MAX14778ETP+T 提供了低阻抗、宽带宽且适合工业温度范围的双路 4:1 模拟开关解决方案，适合对信号完整性与封装密度有较高要求的多路信号切换场景。
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