參數(shù)資料
型號(hào)： DS1821
廠商： DALLAS SEMICONDUCTOR
元件分類(lèi)： Switch/Digital Output Temperature Sensor
英文描述： DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 1Cel, ROUND, SURFACE MOUNT
封裝： PR-35, 3 PIN
文件頁(yè)數(shù)： 1/17頁(yè)
文件大小： 461K
代理商： DS1821
1 of 17
040601
ma
FEATURES
Requires no external components
Unique 1-Wire interface requires only one
port pin for communication
Operates over a -55°C to +125°C (67°F to
+257°F) temperature range
Functions as a standalone thermostat with
user-definable trip-points
Provides 8-bit (1°C resolution) centigrade
temperature measurements
Accuracy is
±1°C over 0°C to +85°C range
Converts temperature to a digital word in 1
second (max)
Available in 3-pin PR35 and 8-pin SOIC
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
VDD
- 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°C to +125°C and is accurate to
±1°C over a range
of 0°C to +85°C. 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
PRELIMINARY
www.dalsemi.com
8-pin 208-mil SOIC
(DS1821S)
1
(BOTTOM VIEW)
23
DALLAS
DS1821
1
GND
DQ
V
DD
23
PR35
(DS1821)
6
3
1
2
4
8
7
5
DQ
GND
NC
VDD
NC
DS18
21
S
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1821_07 制造商:DALLAS 制造商全稱(chēng):Dallas Semiconductor 功能描述:Programmable Digital Thermostat and Thermometer
DS1821+ 功能描述:板上安裝溫度傳感器 Programmable Digital Thermostat/Thrmmtr RoHS:否 制造商:Omron Electronics 輸出類(lèi)型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
DS1821C+ 功能描述:恒溫器 Programmable Digital Thermo-stat/monitor RoHS:否 制造商:Maxim Integrated 功能: 開(kāi)路溫度: 閉合溫度: 準(zhǔn)確性:+/- 1 C 溫度范圍:- 55 C to + 125 C 電流額定值:500 uA 電壓額定值:2.7 V to 5.5 V 產(chǎn)品:Thermostats
DS1821-C02 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類(lèi)型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
DS1821-C04 制造商:DSC 功能描述:
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