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MAX31855
Cold-Junction Compensated
Thermocouple-to-Digital Converter
General Description
The MAX31855 performs cold-junction compensation
and digitizes the signal from a K-, J-, N-, T-, S-, R-, or
E-type thermocouple. The data is output in a signed
14-bit, SPI-compatible, read-only format. This converter
resolves temperatures to 0.25 N C, allows readings as high
as +1800 N C and as low as -270 N C, and exhibits thermo-
couple accuracy of ±2 N C for temperatures ranging from
-200 N C to +700 N C for K-type thermocouples. For full
range accuracies and other thermocouple types, see the
Thermal Characteristics specifications.
Applications
Industrial
Appliances
HVAC
Features
S Cold-Junction Compensation
S 14-Bit, 0.25 N C Resolution
S Versions Available for K-, J-, N-, T-, S-, R-, and
E-Type Thermocouples (see Table 1 )
S Simple SPI-Compatible Interface (Read-Only)
S Detects Thermocouple Shorts to GND or V CC
S Detects Open Thermocouple
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part,
refer to: www.maxim-ic.com/MAX31855.related
Functional Diagrams
Automotive
Typical Application Circuit
V CC
0.1μF
MAX31855
GND
SO
MISO
MICROCONTROLLER
T+
T-
SCK
CS
SCK
SS
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-5793; Rev 2; 2/12
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相关代理商/技术参数
MAX31855JASA+ 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
MAX31855JASA+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
MAX31855KASA+ 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
MAX31855KASA+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
MAX31855NASA+ 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
MAX31855NASA+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
MAX31855PMB1# 功能描述:温度传感器模块 MAX31855 Peripheral Module RoHS:否 制造商:Maxim Integrated 产品:K-Type Thermocouples 温度范围:- 270 C to + 1800 C 准确性:+/- 2 C 分辨率:0.25 C 输出类型:Digital 接口类型:SPI 工作电源电压:3.3 V 工作电源电流:900 uA 最大工作温度:+ 125 C 尺寸:
MAX31855RASA+ 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