Datasheet > MAX31820MCR+T

MAX31820MCR+T

更新时间： 2024-02-21 12:02:55

品牌	Logo	应用领域
美信 - MAXIM		输出元件传感器换能器
页数	文件大小	规格书
21页	942K
描述
Serial Switch/Digital Sensor, 12 Bit(s), 2Cel, Oval, 3 Pin, Through Hole Mount, ROHS COMPLIANT, TO-92, 3 PIN

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技术参数
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MAX31820MCR+T 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	SIP3,.1	Reach Compliance Code：	compliant
Factory Lead Time：	6 weeks	风险等级：	1.69
最大精度（摄氏度）：	2 Cel	主体宽度：	3.62 mm
主体高度：	4.635 mm	主体长度或直径：	4.7 mm
安装特点：	THROUGH HOLE MOUNT	位数：	12
端子数量：	3	最大工作电流：	1.5 mA
最高工作温度：	125 °C	最低工作温度：	-55 °C
输出接口类型：	1-WIRE INTERFACE	封装主体材料：	PLASTIC/EPOXY
封装等效代码：	SIP3,.1	封装形状/形式：	OVAL
电源：	3.3 V	传感器/换能器类型：	TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL
子类别：	Other Sensors/Transducers	最大供电电压：	3.7 V
最小供电电压：	3 V	表面贴装：	NO
端接类型：	SOLDER	Base Number Matches：	1

MAX31820MCR+T 数据手册

MAX31820

1-Wire Ambient Temperature Sensor

General Description

Beneﬁts and Features

The MAX31820 ambient temperature sensor provides

9-bit to 12-bit Celsius temperature measurements with

±0.5°C accuracy over a +10°C to +45°C temperature

range. Over its entire -55°C to +125°C operating range,

the device has ±2.0°C accuracy.

●ꢀ Uniqueꢀ1-WireꢀInterfaceꢀRequiresꢀOnlyꢀOneꢀPortꢀPinꢀ

for Communication

●ꢀ EachꢀDeviceꢀhasꢀaꢀUniqueꢀ64-BitꢀSerialꢀCodeꢀStoredꢀ

inꢀOn-BoardꢀROM

●ꢀ MultidropꢀCapabilityꢀSimplifiesꢀDistributedꢀ

Temperature-SensingꢀApplicationsꢀ

The device communicates over a 1-Wire bus that, by

definition, requires only one data line (and ground) for

communication with a central microprocessor. In addition,

the device can derive power directly from the data line

(“parasite power”), eliminating the need for an external

power supply. Requiring so few pins enables the device

to be placed in a 3-pin TO-92 package. The form factor

of this package allows the device to be placed above

the board and thus measure the ambient temperature of

a system, as opposed to the board temperature that a

surface-mount package would measure.

●ꢀ RequiresꢀNoꢀExternalꢀComponents

●ꢀ CanꢀBeꢀPoweredꢀfromꢀDataꢀLine;ꢀ3.0Vꢀtoꢀ3.7Vꢀ

Power-SupplyꢀRangeꢀ

●ꢀ MeasuresꢀTemperaturesꢀfromꢀ-55°Cꢀtoꢀ+125°Cꢀ(-67°Fꢀ

toꢀ+257°F)

●ꢀ ±0.5°CꢀAccuracyꢀfromꢀ+10°Cꢀtoꢀ+45°C

●ꢀ ThermometerꢀResolutionꢀisꢀUser-Selectableꢀfromꢀ

9ꢀBitsꢀtoꢀ12ꢀBits

Each MAX31820 has a unique 64-bit serial code, which

allows multiple MAX31820 devices to function on the same

1-Wire bus. Therefore, it is simple to use one microproces-

sor to control many devices distributed over a large area.

●ꢀ ConvertsꢀTemperatureꢀtoꢀ12-BitꢀDigitalꢀWordꢀinꢀ

750msꢀ(Max)

●ꢀ User-DefinableꢀNonvolatileꢀ(NV)ꢀAlarmꢀSettings

●ꢀ AlarmꢀSearchꢀCommandꢀIdentifiesꢀandꢀAddressesꢀ

DevicesꢀWhoseꢀTemperatureꢀisꢀOutsideꢀProgrammedꢀ

Limitsꢀ(TemperatureꢀAlarmꢀCondition)

Applications

●ꢀ HVACꢀEnvironmentalꢀControls

●ꢀ TemperatureꢀMonitoringꢀSystemsꢀInsideꢀBuildings,ꢀ

Equipment, or Machinery

●ꢀ Availableꢀinꢀ3-PinꢀTO-92ꢀPackage

●ꢀ TO-92ꢀPackageꢀAllowsꢀMeasurementꢀofꢀAmbientꢀ

●ꢀ ProcessꢀMonitoringꢀandꢀControlꢀSystems

●ꢀ ThermostaticꢀControls

Temperature

●ꢀ SoftwareꢀCompatibleꢀwithꢀtheꢀDS1822ꢀandꢀDS18B20

●ꢀ IndustrialꢀSystems

●ꢀ ConsumerꢀProducts

Ordering Information appears at end of data sheet.

●ꢀ Thermometers

●ꢀ AnyꢀThermallyꢀSensitiveꢀSystem

For related parts and recommended products to use with this part, refer

to www.maximintegrated.com/MAX31820.related.

Block Diagram

4.7kΩ

MEMORY

CONTROL LOGIC

MAX31820

PARASITE-

POWER

CIRCUIT

TEMPERATURE REGISTER

ALARM HIGH TRIGGER

64-BIT ROM

AND

GND

(T ) REGISTER (EEPROM)

1-Wire PORT

SCRATCHPAD

ALARM LOW TRIGGER

(T ) REGISTER (EEPROM)

POWER-

SUPPLY

SENSE

CONFIGURATION REGISTER (EEPROM)

8-BIT CRC GENERATOR

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

19-6731; Rev 0; 6/13

12 3 4 5 6 7...21

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与MAX31820MCR+T相关器件

型号	品牌	描述	获取价格	数据表
MAX31820PAR	ADI	1-Wire Parasite-Power, Ambient Temperature Sensor	获取价格
MAX31820PARMCR+T	MAXIM	Serial Switch/Digital Sensor, 12 Bit(s), 2Cel, Oval, 3 Pin, Through Hole Mount, ROHS COMPL	获取价格
MAX31820SLMCR+T	MAXIM	Serial Switch/Digital Sensor, 12 Bit(s), 2Cel, Oval, 3 Pin, Through Hole Mount, ROHS COMPL	获取价格
MAX31825	ADI	1-Wire? Temperature Sensor with ±1oC Accuracy	获取价格
MAX31826	MAXIM	1-Wire Digital Temperature Sensor with 1Kb Lockable EEPROM	获取价格
MAX31826	ADI	带有1Kb可锁存EEPROM的1-Wire数字温度传感器	获取价格

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