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參數(shù)資料
| 型號： | DS1821C+ |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 2/19頁 |
| 文件大小： | 793K |
| 描述： | IC THERMOMETER/STAT PROG 3-TO92 |
| 標準包裝： | 500 |
| 系列： | 1-Wire® |
| 功能： | 溫度計，恒溫計 |
| 傳感器類型： | 內(nèi)部 |
| 感應溫度： | -55°C ~ 125°C |
| 精確度： | ±1°C |
| 拓撲： | 比較器，寄存器庫 |
| 輸出類型： | 數(shù)字 |
| 輸出警報： | 無 |
| 輸出風扇： | 無 |
| 電源電壓： | 2.7 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 標準主體 |
| 供應商設備封裝： | TO-92-3 |
| 包裝： | 管件 |
DS1821
2 of 19
ORDERING INFORMATION
PART
PACKAGE MARKING
PIN-PACKAGE
DS1821C+
DS1821
3 TO92
D 1 21 +
D 1 21
2 mil
DS1821S+T&R
DS1821S
8 SO (208 mils), 2000 Piece
T - n -R l
+Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
DETAILED PIN DESCRIPTIONS Table 1
TO92 8-PIN
SO*
SYMBOL
DESCRIPTION
1
2
GND
Ground in.
2
1
DQ
Open drain data input/output pin 1-Wire operation; Open drain
thermostat out ut in thermostat o eration.
3
8
V
P
r
l in
*All pins not specified in this table are No Connect pins.
OVERVIEW
Figure 1 shows a block diagram of the DS1821 and pin descriptions are given in Table 1. The DS1821
can operate as a standalone thermostat with user-programmable trip-points or as 8-bit temperature sensor
with a 1-Wire digital interface. The open-drain DQ pin functions as the thermostat output for thermostat
operation and as the data I/O pin for 1-Wire communications. The 1-Wire interface provides user access
to the nonvolatile (EEPROM) thermostat trip-point registers (T
H
and T
L
), the status/configuration register,
and the temperature register.
When configured as standalone thermostat, temperature conversions start immediately at power-up. In
this mode, the DQ pin becomes active when the temperature of the DS1821 exceeds the limit
programmed into the T
H
register, and remains active until the temperature drops below the limit
programmed into the T
L
register.
The DS1821 uses Maxims exclusive 1-Wire bus protocol that implements bus communication with one
control signal. This system is explained in detail in the 1-Wire BUS SYSTEM section of this datasheet.
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相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1821C+ | 功能描述:恒溫器 Programmable Digital Thermo-stat/monitor RoHS:否 制造商:Maxim Integrated 功能: 開路溫度: 閉合溫度: 準確性:+/- 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 輸出類型:Digital 配置: 準確性:+/- 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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| DS1821-C04 | 制造商:DSC 功能描述: |
| DS1821S | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| DS1821S/T&R | 制造商:Maxim Integrated Products 功能描述:PROGRAM THERMOSTAT 208ML 8-SOIC T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERMOMETER/STAT PROG 8-SOIC |
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