MAX31850

更新时间： 2024-11-29 12:27:35

品牌	Logo	应用领域
美信 - MAXIM		转换器
页数	文件大小	规格书
25页	1900K
描述
Cold-Junction Compensated, 1-Wire Thermocouple-to-Digital Converters

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数据手册

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MAX31850 数据手册

EVALUATION KIT AVAILABLE

MAX31850/MAX31851

Cold-Junction Compensated, 1-Wire

Thermocouple-to-Digital Converters

General Description

Features

The MAX31850/MAX31851 cold-junction compensat-

ed, 1-Wire thermocouple-to-digital converters perform

S Cold-Junction Compensation

S 14-Bit, 0.25NC Resolution

cold-junction compensation and digitize the signal from

a K-, J-, N-, T-, S-, R-, or E-type thermocouple. The con-

verters resolve temperatures to 0.25NC, allow readings

as high as +1768NC and as low as -270NC, and exhibit

thermocouple accuracy of 8 LSBs (2NC) for temperatures

ranging from -200NC to +700NC.

S Versions Available for K-, J-, N-, T-, S-, R-, and

E-Type Thermocouples (see Table 1)

S 1-Wire Interface (Read-Only); Power Can Be

Obtained from Interface (Parasite-Powered Mode)

S Detects Thermocouple Shorts to GND or V

S Detects Open Thermocouple

Communication with the master microcontroller is over a

1-Wire bus that by definition requires only one data line

(and ground) for communication. Operating power can

be obtained directly from the data line (“parasite power”),

eliminating the need for an external power supply.

Applications

Industrial

HVAC

Appliances

Medical

Each device has a unique 64-bit serial code, which

allows multiple units to function on the same 1-Wire bus.

Therefore, it is simple to use one microcontroller (the

master device) to monitor temperature from many ther-

mocouples distributed over a large area.

Ordering Information appears at end of data sheet.

Four location address inputs simplify mapping of

individual units to specific locations.

Block Diagram

MAX31850

MAX31851

PARASITE-

POWER

CIRCUIT

COLD-JUCTION

COMPENSATION

64-BIT ROM

AND

1-Wire PORT

T+

T-

ADC

POWER-

SUPPLY

SENSE

FAULT

DETECTION

MEMORY

CONTROL LOGIC

REFERENCE

VOLTAGE

SCRATCHPAD

GND

ADDRESS PIN INPUT

AD0 AD1 AD2 AD3

1-Wire is a registered trademark of Maxim Integrated Products, Inc.

For related parts and recommended products to use with this part, refer to: www.maximintegrated.com/MAX31850.related

For pricing, delivery, and ordering information, please contact Maxim Direct at

1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

19-6725; Rev 0; 6/13

12 3 4 5 6 7...25

中文翻译

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与MAX31850相关器件

型号	品牌	获取价格	描述	数据表
MAX31850EATB+	MAXIM	获取价格	Analog Circuit, 1 Func, PDSO10, ROHS COMPLIANT, TDFN-10
MAX31850EVKIT	MAXIM	获取价格	MAX31850/MAX31851 Evaluation Kit
MAX31850JATB+	MAXIM	获取价格	Analog Circuit, 1 Func, PDSO10, ROHS COMPLIANT, TDFN-10
MAX31850NATB+	MAXIM	获取价格	Analog Circuit, 1 Func, PDSO10, ROHS COMPLIANT, TDFN-10
MAX31850TATB+	MAXIM	获取价格	暂无描述
MAX31851	MAXIM	获取价格	Cold-Junction Compensated, 1-Wire Thermocouple-to-Digital Converters
MAX31851RATB+	MAXIM	获取价格	Analog Circuit, 1 Func, PDSO10, ROHS COMPLIANT, TDFN-10
MAX31855	MAXIM	获取价格	冷端补偿热电偶至数字输出转换器
MAX31855	ADI	获取价格	冷端补偿热电偶至数字输出转换器
MAX31855_1111	MAXIM	获取价格	Cold-Junction Compensated Thermocouple-to-Digital Converter

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