參數(shù)資料
型號(hào)： DS18B20+
廠商： Maxim Integrated
文件頁(yè)數(shù)： 1/22頁(yè)
文件大?。?/td> 528K
描述： IC THERM MICROLAN PROG-RES TO-92
產(chǎn)品培訓(xùn)模塊： 1-Wire Communications
Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 500
功能： 溫度計(jì)，恒溫計(jì)
傳感器類型： 內(nèi)部
感應(yīng)溫度： -55°C ~ 125°C
精確度： ±2°C（最小值）
拓?fù)洌?/td> 寄存器庫(kù)，變簽式暫存器
輸出類型： 1-Wire?
輸出警報(bào)： 是
輸出風(fēng)扇： 無(wú)
電源電壓： 3 V ~ 5.5 V
工作溫度： -55°C ~ 125°C
安裝類型： 通孔
封裝/外殼： TO-226-3、TO-92-3 標(biāo)準(zhǔn)主體
供應(yīng)商設(shè)備封裝： TO-92-3
包裝： 管件
產(chǎn)品目錄頁(yè)面： 1435 (CN2011-ZH PDF)
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or pricing, delivery, and ordering information, please contact Maxim Direct
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REV: 042208
 
 
 
 
DESCRIPTION
The DS18B20 digital thermometer provides 9-bit
to 12-bit Celsius temperature measurements and
has an alarm function with nonvolatile user-
programmable upper and lower trigger points.
The DS18B20 communicates over a 1-Wire bus
that by definition requires only one data line (and
ground)   for   communication   with   a   central
microprocessor. It has an operating temperature
range of -55癈 to +125癈 and is accurate to
?.5癈 over the range of -10癈 to +85癈. In
addition, the DS18B20 can derive power directly
from the data line (parasite power), eliminating
the need for an external power supply.
 
Each DS18B20 has a unique 64-bit serial code,
which allows multiple DS18B20s to function on
the same 1-Wire bus. Thus, it is simple to use one
microprocessor   to   control   many   DS18B20s
distributed over a large area. Applications that
can benefit from this feature include HVAC
environmental controls, temperature monitoring
systems    inside    buildings,    equipment,    or
machinery, and process monitoring and control
systems.
 
FEATURES
?  Unique 1-Wire?Interface Requires Only One
Port Pin for Communication
?  Each Device has a Unique 64-Bit Serial Code
Stored in an On-Board ROM
?  Multidrop Capability Simplifies Distributed
Temperature-Sensing Applications
?  Requires No External Components
?  Can Be Powered from Data Line; Power Supply
Range is 3.0V to 5.5V
?  Measures Temperatures from -55癈 to +125癈
(-67癋 to +257癋)
?  ?.5癈 Accuracy from -10癈 to +85癈
?  Thermometer Resolution is User Selectable
from 9 to 12 Bits
?  Converts Temperature to 12-Bit Digital Word in
750ms (Max)
?  User-Definable Nonvolatile (NV) Alarm
Settings
?  Alarm Search Command Identifies and
Addresses Devices Whose Temperature is
Outside Programmed Limits (Temperature
Alarm Condition)
?  Available in 8-Pin SO (150 mils), 8-Pin 礢OP,
and 3-Pin TO-92 Packages
?  Software Compatible with the DS1822
?  Applications Include Thermostatic Controls,
Industrial Systems, Consumer Products,
Thermometers, or Any Thermally Sensitive
System
 
PIN CONFIGURATIONS
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
DS18B20
Programmable Resolution
1-Wire Digital Thermometer
TO-92
(DS18B20)
1 2 3
AXIM
18B20 
1
2   3
SO (150 mils)
(DS18B20Z)
N.  .
N.C.
N.C.
GND
DQ
V
DD
 
6
7
3
2
V
DD
 
N.  .
N.C.
N.  .
GND
N.C.
6
7
3
2
?SPAN class="pst DS18B20Z-T-R_2290795_6">SOP 
(DS18B20U)
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
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