參數(shù)資料
型號(hào): DS1821S+
廠(chǎng)商: Maxim Integrated
文件頁(yè)數(shù): 1/19頁(yè)
文件大小: 793K
描述: IC THERMOMETER/STAT PROG 8-SOIC
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: 88
系列: 1-Wire®
功能: 溫度計(jì),恒溫計(jì)
傳感器類(lèi)型: 內(nèi)部
感應(yīng)溫度: -55°C ~ 125°C
精確度: ±1°C(最小值)
拓?fù)洌?/td> 比較器,寄存器庫(kù)
輸出類(lèi)型: 數(shù)字
輸出警報(bào): 無(wú)
輸出風(fēng)扇: 無(wú)
電源電壓: 2.7 V ~ 5.5 V
工作溫度: -55°C ~ 125°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 8-SOIC(0.209",5.30mm 寬)
供應(yīng)商設(shè)備封裝: 8-SO
包裝: 管件
產(chǎn)品目錄頁(yè)面: 1435 (CN2011-ZH PDF)
 
1 of 19
 
 
 
 
 
 
 
 
 
 
 
FEATURES
?  Requires no external components
?  Unique 1-Wire
?/DIV>
 interface requires only one
port pin for communication
?  Operates over a -55癈 to +125癈 (-67癋 to
+257癋) temperature range
?  Functions as a standalone thermostat with
user-definable trip-points
?  Provides 8-bit (1癈 resolution) centigrade
temperature measurements
?  Accuracy is ?癈 over 0癈 to +85癈 range 
?  Converts temperature to a digital word in
1 second (max)
?  Available in 3-pin TO92 and 8-pin SO
packages
?  Applications include thermostatic controls,
industrial systems, consumer products,
thermometers, or any thermally sensitive
system
 
PIN ASSIGNMENT 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PIN DESCRIPTION
GND     - Ground
DQ
- Data In/Out and Thermostat Output
V
DD
 
- Power Supply Voltage
NC
- No Connect
 
 
 
DESCRIPTION
The DS1821 can function as a standalone thermostat with user-programmable trip-points or as 8-bit
temperature sensor with a 1-Wire digital interface. The thermostat trip-points are stored in nonvolatile
memory, so DS1821 units can be programmed prior to system insertion for true standalone operation.
The DS1821 has an operating temperature range of 55癈 to +125癈 and is accurate to ?癈 over a range
of 0癈 to +85癈. Communication with the DS1821 is accomplished through the open-drain DQ pin; this
pin also serves as the thermostat output.
DS1821
Programmable Digital Thermostat and Thermometer
8-pin 208-mil SO
D  1  21
1
B  TT  M   IE
2 3
DS1821 
1      
2   3
TO92
(DS1821C) 
6
3
1
2
4
7
5
D
NC
V
N
NC
1-Wire is a registered trademark of Maxim Integrated
Products, Inc.
1 -   22 R v   12
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