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參數資料
| 型號： | DS1720 |
| 英文描述： | Econo . Digital Thermometer and Thermostat |
| 文件頁數： | 1/12頁 |
| 文件大?。?/td> | 77K |
| 代理商： | DS1720 |
DS1720
Econo – Digital Thermometer and
Thermostat
DS1720
PRELIMINARY
030598 1/12
FEATURES
Requires no external components
Supply voltage range covers from 2.7V to 5.5V
Measures temperatures from –55
°
C to +125
°
C in
0.5
°
C increments. Fahrenheit equivalent is –67
°
F to
+257
°
F in 0.9
°
F increments
Temperature is read as a 9–bit value
Converts temperature to digital word in 1 second
(max)
Thermostatic settings are user–definable and non–
volatile
Data is read from/written via a 3–wire serial interface
(CLK, DQ, RST)
Applications include thermostatic controls, industrial
systems, consumer products, thermometers, or any
thermally sensitive system
8–pin SOIC (208 mil) package
PIN ASSIGNMENT
GND
V
DD
T
HIGH
RST
CLK/CONV
DQ
T
LOW
T
COM
1
2
3
4
8
7
6
5
DS1720S 8–PIN SOIC (208 MIL)
See Mech Drawings Section
PIN DESCRIPTION
DQ
CLK/CONV
– 3–Wire Input/Output
– 3–Wire Clock Input and
Stand–alone
Convert Input
– 3–Wire Reset Input
– Ground
– High Temperature Trigger
– Low Temperature Trigger
– High/Low Combination Trigger
– Power Supply Voltage (3V – 5V)
RST
GND
T
HIGH
T
LOW
T
COM
V
DD
DESCRIPTION
The DS1720 Digital Thermometer and Thermostat pro-
vides 9–bit temperature readings which indicate the
temperature of the device. With three thermal alarm out-
puts, the DS1720 can also act as a thermostat. T
HIGH
is
driven high if the DS1720’s temperature is greater than
or equal to a user–defined temperature TH. T
LOW
is
driven high if the DS1720’s temperature is less than or
equal to a user–defined temperature TL. T
COM
is driven
high when the temperature exceeds TH and stays high
until the temperature falls below that of TL.
User–defined temperature settings are stored in non–
volatile memory, so parts can be programmed prior to
insertion in a system, as well as used in stand–alone
applications without a CPU. Temperature settings and
temperature readings are all communicated to/from the
DS1720 over a simple 3–wire interface.
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PDF描述 |
|---|---|
| DS1721S | Digital Thermometer |
| DS1721U | Digital Thermometer |
| DS1721 | 2-Wire Digital Thermometer and Thermostat |
| DS1722S | IC-SM-DIGITAL THERMOMETER |
| DS1722 | Digital Thermometer with SPI/3-Wire Interface |
相關代理商/技術參數 |
參數描述 |
|---|---|
| DS1720S | 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 |
| DS1720S/T&R | 制造商:Maxim Integrated Products 功能描述:DIGITAL THERMOMETER/THERMOSTAT T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERMOMETER/STAT DIG 8-SOIC |
| DS1720S/T&R | 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 |
| DS1720S+ | 功能描述:板上安裝溫度傳感器 Digital Thermometer & Thermostat 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 |
| DS1720S+T&R | 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL 3-WIRE 8SOIC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERMOMETER/STAT DIG 8-SOIC |
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