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MAX31820SLMCR+T PDF预览

MAX31820SLMCR+T

更新时间： 2024-11-26 21:05:39
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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MAX31820SLMCR+T 技术参数

是否Rohs认证： 符合生命周期：Obsolete
包装说明：SIP3,.1,50Reach Compliance Code：compliant
风险等级：5.73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,.1,50
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

MAX31820SLMCR+T 数据手册

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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  
V
PU  
4.7kΩ  
MEMORY  
CONTROL LOGIC  
DQ  
MAX31820  
PARASITE-  
POWER  
CIRCUIT  
TEMPERATURE REGISTER  
ALARM HIGH TRIGGER  
64-BIT ROM  
AND  
GND  
(T ) REGISTER (EEPROM)  
H
1-Wire PORT  
C
PP  
SCRATCHPAD  
ALARM LOW TRIGGER  
(T ) REGISTER (EEPROM)  
L
POWER-  
SUPPLY  
SENSE  
CONFIGURATION REGISTER (EEPROM)  
8-BIT CRC GENERATOR  
V
DD  
1-Wire is a registered trademark of Maxim Integrated Products, Inc.  
19-6731; Rev 0; 6/13  
1234567...21

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