Datasheet > MAX31820PARMCR+T

MAX31820PARMCR+T

更新时间： 2024-01-04 18:37:29

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	861K
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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MAX31820PARMCR+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
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
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

MAX31820PARMCR+T 数据手册

MAX31820PAR

1-Wire, Parasite-Power,

Ambient Temperature Sensor

General Description

Beneﬁts and Features

●ꢀ Uniqueꢀ1-WireꢀInterfaceꢀRequiresꢀOnlyꢀOneꢀPortꢀPinꢀ

The MAX31820PAR ambient temperature sensor pro-

vides 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.

for Communication

●ꢀ DerivesꢀPowerꢀfromꢀDataꢀLineꢀ(ParasiteꢀPower);ꢀNoꢀ

LocalꢀPowerꢀSupplyꢀNeeded

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

●ꢀ MultidropꢀCapabilityꢀSimplifiesꢀDistributedꢀ

Temperature-SensingꢀApplicationsꢀ

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

communication with a central microprocessor. In addi-

tion, the device derives 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

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

toꢀ+257°F)

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

●ꢀ ThermometerꢀResolutionꢀisꢀUser-Selectableꢀfromꢀ

9ꢀBitsꢀtoꢀ12ꢀBits

●ꢀ ConvertsꢀTemperatureꢀtoꢀ12-BitꢀDigitalꢀWordꢀinꢀ

750msꢀ(Max)

Each MAX31820PAR has a unique 64-bit serial code, which

allows multiple MAX31820PAR devices to function on the

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

cessor to control many devices distributed over a large area.

●ꢀ User-DefinableꢀNonvolatileꢀ(NV)ꢀAlarmꢀSettings

●ꢀ AlarmꢀSearchꢀCommandꢀIdentifiesꢀandꢀAddressesꢀ

DevicesꢀWhoseꢀTemperatureꢀisꢀOutsideꢀProgrammedꢀ

Limitsꢀ(TemperatureꢀAlarmꢀCondition)

Applications

●ꢀ HVACꢀEnvironmentalꢀControls

●ꢀ TemperatureꢀMonitoringꢀSystemsꢀInsideꢀBuildings,ꢀ

Equipment, or Machinery

●ꢀ Availableꢀinꢀ3-PinꢀTO-92ꢀPackage

●ꢀ SoftwareꢀCompatibleꢀwithꢀtheꢀDS1822-PARꢀandꢀ

DS18B20-PAR

●ꢀ ProcessꢀMonitoringꢀandꢀControlꢀSystems

●ꢀ ThermostaticꢀControls

●ꢀ IndustrialꢀSystems

●ꢀ ConsumerꢀProducts

●ꢀ Thermometers

●ꢀ AnyꢀThermallyꢀSensitiveꢀSystem

Ordering Information appears at end of data sheet.

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

to www.maximintegrated.com/MAX31820PAR.related.

Block Diagram

PARASITE-POWER

CIRCUIT

MEMORY

CONTROL LOGIC

4.7kΩ

MAX31820PAR

TEMPERATURE REGISTER

64-BIT ROM

AND

ALARM HIGH TRIGGER (T )

1-Wire PORT

SCRATCHPAD

ALARM LOW TRIGGER (T )

CONFIGURATION REGISTER (EEPROM)

8-BIT CRC GENERATOR

GND

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

19-6732; Rev 0; 6/13

12 3 4 5 6 7...21

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与MAX31820PARMCR+T相关器件

型号	品牌	描述	获取价格	数据表
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
MAX31826MUA	MAXIM	1-Wire Digital Temperature Sensor with 1Kb Lockable EEPROM	获取价格
MAX31826MUA T	MAXIM	1-Wire Digital Temperature Sensor with 1Kb Lockable EEPROM	获取价格

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