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ADI/LINEAR MAX6675ISA+T MAX6675ISA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ADI(Analog Devices) / LINEAR MAX6675ISA+T
- Type
- SOIC-8
- Minimum package
- 2500 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ADI(Analog Devices) / LINEAR
- Electronic Component
- MAX6675ISA+T
- Electronic Component
- 1
- Package
- SOIC-8
- Electronic Component
- ADC / DAC - Special Purpose
- Electronic Component
- 0.219g
- Electronic Component
- 1
- Features
- Built-in Temperature Sensor; Low Noise Front End
- Electronic Component
- BM0257647297
- Operating Temperature
- 20℃~+85℃
- Operating Voltage
- 3V~5.5V
- Interface Type
- SPI
- Data
- 4.3MHz
- ICType
- Converter
- Static Current
- 1500uA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MAX6675ISA+T 产品概述
一、产品简介
MAX6675ISA+T 是一款面向热电偶测温的数字转换器，属于热电偶数字转换器类别，由 ADI（含原 Maxim/Linear 设计）提供，封装为 SOIC-8。器件内置参考电压源和冷端补偿电路，能够将热电偶的毫伏级信号直接转换为数字温度数据，通过 SPI 总线输出，适合嵌入式温度检测与监控系统。
二、主要性能参数
- 分辨率：12 位（有效温度分辨率）
- 工作电压：3.0 V ~ 5.5 V
- 接口类型：SPI（串行外设接口，最高支持 SCLK 4.3 MHz）
- 工作温度范围：-20 ℃ ~ +85 ℃
- 内部基准：内置参考电压源
- 静态电流：典型 1500 μA（约 1.5 mA）
- 封装形式：SOIC-8（T/R 卷装）
三、接口与数据读取
MAX6675ISA+T 采用四线 SPI 通信（CS、SCK、SO、NC），主控通过片选与时钟读取器件内部转换结果。器件按转换周期更新温度寄存器，主机通过连续的时钟脉冲读出 12 位温度数据及故障标志。建议 SPI 时钟不要超过规格上限（4.3 MHz），并按时序规范驱动 CS/SCK，以保证读取稳定性。
四、功能特点与优势
- 集成冷端补偿，消除外部冷端测量误差，简化系统设计
- 内部放大与 A/D 转换，提升抗干扰性，减少外部放大器需求
- 12 位分辨率可满足大多数工业与实验室级别的温度测量应用
- 宽电源范围（3–5.5 V），适配单片机和微控制器常见电源
- SOIC-8 小封装便于在 PCB 上布局与量产组装
五、典型应用场景
- 工业过程温度监控与控制（炉温、退火、热处理）
- PCB 上的温度采集模块与多点测温系统
- HVAC、冷链与环境控制设备
- 实验室温度记录仪与数据采集系统
- 3D 打印机和热端温度检测（需按实际温度范围确认热电偶类型）
六、设计与使用建议
- 电源端加 0.1 μF 陶瓷旁路电容靠近 VCC 与 GND 引脚，抑制高频干扰
- 热电偶与控制器地线尽量分离，使用屏蔽或差分布线减少共模噪声
- 长导线时注意串联电阻与热电偶本身的 EMF 干扰，必要时在读取端增加滤波
- 在 PCB 布局上将模拟信号走线最短化，避免穿过噪声源（开关、功率元件）
- 读取时留意器件提供的故障输出位（如热电偶开路），增加异常处理逻辑
七、注意事项
- 确保供电符合 3.0–5.5 V 范围，电源瞬态超限可能影响测量或损坏芯片
- 器件工作温度范围为 -20 ℃～+85 ℃，超出需采取热隔离或选型更高温等级
- 正确识别 SOIC-8 引脚方向，避免接线错误
- 对于高精度需求，应校准系统并考虑温漂、冷端补偿误差及接线影响
结语：MAX6675ISA+T 是一款集成化程度高、使用便捷的热电偶数字转换器，适用于多数中低频率的温度测量应用。合理电路设计与良好布线可充分发挥其稳定性与测量精度。
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