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| 型号： | MAX31855SASA+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 11/13页 |
| 文件大小： | 0K |
| 描述： | IC CONV THERMOCOUPLE-DGTL 8SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 功能： | 热电偶冷端温度补偿器 |
| 传感器类型： | 外部 |
| 感应温度： | 50°C ~ 1600°C |
| 精确度： | ±6°C（最小值） |
| 拓扑： | ADC |
| 输出类型： | 3 线/SPI? 串行 |
| 输出警报： | 无 |
| 输出风扇： | 无 |
| 电源电压： | 3 V ~ 3.6 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 标准包装 |
| 其它名称： | MAX31855SASA+TDKR |
MAX31855
Cold-Junction Compensated
Thermocouple-to-Digital Converter
Applications Information
Noise Considerations
Because of the small signal levels involved, thermocou-
ple temperature measurement is susceptible to power-
supply coupled noise. The effects of power-supply noise
can be minimized by placing a 0.1 F F ceramic bypass
capacitor close to the V CC pin of the device and to GND.
The input amplifier is a low-noise amplifier designed to
enable high-precision input sensing. Keep the thermo-
couple and connecting wires away from electrical noise
sources. It is strongly recommended to add a 10nF
ceramic surface-mount differential capacitor, placed
across the T+ and T- pins, in order to filter noise on the
thermocouple lines.
Thermal Considerations
Self-heating degrades the device’s temperature measure-
ment accuracy in some applications. The magnitude of the
temperature errors depends on the thermal conductivity
of the device package, the mounting technique, and the
effects of airflow. Use a large ground plane to improve the
device’s temperature measurement accuracy.
Maxim Integrated
The thermocouple system’s accuracy can also be
improved by following these precautions:
? Use the largest wire possible that does not shunt heat
away from the measurement area.
? If a small wire is required, use it only in the region
of the measurement, and use extension wire for the
region with no temperature gradient.
? Avoid mechanical stress and vibration, which could
strain the wires.
? When using long thermocouple wires, use a twisted
pair extension wire.
? Avoid steep temperature gradients.
? Try to use the thermocouple wire well within its tem-
perature rating.
? Use the proper sheathing material in hostile environ-
ments to protect the thermocouple wire.
? Use extension wire only at low temperatures and only
in regions of small gradients.
? Keep an event log and a continuous record of thermo-
couple resistance.
11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX31855TASA+ | 功能描述:数据转换 IC - 多种 Thermocouple To Digital Converter RoHS:否 制造商:Texas Instruments 转换器数量:1 分辨率:8 bit 工作电源电压:2.7 V to 5.5 V 功耗: 工作温度范围:- 40 C to + 85 C 封装 / 箱体:MSOP-10 封装:Reel |
| MAX31855TASA+T | 功能描述:数据转换 IC - 多种 Thermocouple To Digital Converter RoHS:否 制造商:Texas Instruments 转换器数量:1 分辨率:8 bit 工作电源电压:2.7 V to 5.5 V 功耗: 工作温度范围:- 40 C to + 85 C 封装 / 箱体:MSOP-10 封装:Reel |
| MAX3185CAP | 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| MAX3185CAP+ | 功能描述:RS-232接口集成电路 EMC Cmplnt 230kbps RS-232 Serial Port RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| MAX3185CAP+T | 功能描述:RS-232接口集成电路 EMC Cmplnt 230kbps RS-232 Serial Port RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
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