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參數資料
| 型號： | DS1721S/T&R |
| 廠商： | Maxim Integrated |
| 文件頁數： | 1/17頁 |
| 文件大小： | 257K |
| 描述： | IC THERMOMETER/STAT DIG HP 8SOIC |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 功能： | 溫度計，恒溫計 |
| 傳感器類型： | 內部 |
| 感應溫度： | -55°C ~ 125°C |
| 精確度： | ±2°C（最小值） |
| 拓撲： | ADC，比較器，寄存器庫 |
| 輸出類型： | 2 線串行，I²C?/SMBUS? |
| 輸出警報： | 是 |
| 輸出風扇： | 是 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -55°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 8-SOIC |
| 包裝： | 帶卷 (TR) |
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110405
FEATURES
?Temperature measurements require no
external components with ?癈 accuracy
?Measures temperatures from -55癈 to
+125癈; Fahrenheit equivalent is -67癋 to
+257癋
?Temperature resolution is configurable from 9
to 12 (default) bits (0.5癈 to 0.0625癈
resolution)
?Maximum conversion time (9-bit resolution)
of 93.75 ms
?Thermostatic settings are user-definable
?Data is read/written via a 2-wire serial
interface (open drain I/O lines); 3-bit
addressability
?Wide power supply range (2.7V - 5.5V)
?Applications include personal computers,
cellular telephones, office equipment, or any
thermally sensitive system
?8-pin, 150-mil SOIC package and 8-pin 礢OP
package
PIN ASSIGNMENT
PIN DESCRIPTION
SDA
- 2-Wire Serial Data Input/Output
SCL
- 2-Wire Serial Clock
GND
- Ground
T
OUT
- Thermostat Output Signal
A
0
- Chip Address Input
A
1
- Chip Address Input
A
2
- Chip Address Input
V
DD
- Power Supply Voltage (+5V)
DESCRIPTION
The DS1721 2-Wire Digital Thermometer and Thermostat provides 12-bit temperature readings, which
indicate the temperature of the device. Thermostatic settings and temperature readings are all
communicated to/from the DS1721 over a simple 2-wire serial interface. No additional components are
required; the device is truly a temperature-to-digital converter.
The DS1721 has three address bits that allow a user to multidrop up to eight sensors along the 2-wire bus,
greatly simplifying the bussing of distributed temperature sensing networks.
The thermal alarm output, T
OUT
, is active when the temperature of the device exceeds a user-defined
temperature TH. The output remains active until the temperature is equal to or below the user-defined
temperature TL, allowing for any hysteresis necessary. The active state of T
OUT
is configurable by the
user.
For applications that require faster conversion times, the user can adjust the readout resolution from 12 to
9 bits, effectively reducing the conversion time from 750ms (MAX) to 93.75 ms (MAX). This is
particularly useful in applications where temperature changes large magnitudes very rapidly.
Applications for DS1721 include personal computers/services, cellular telephones, office equipment, or
any microprocessor-based, thermally sensitive system.
DS1721
2-Wire Digital Thermometer
and Thermostat
www.maxim-ic.com
*
DS1721U
8-Pin ?SOP
V
DD
A
0
A
1
A
2
SDA
SCL
T
OUT
GND
1
2 7
4
DS1721S
8-Pin SOIC (150-mil)
SDA
SCL
T
OUT
GND
V
DD
A
0
A
1
A
2
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相關代理商/技術參數 |
參數描述 |
|---|---|
| DS1721U | 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 |
| DS1721U/T&R | 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL 2-WIRE 8USOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERMOMETER/STAT DIG HP 8USOP |
| DS1721U/T&R+W | 制造商:Maxim Integrated Products 功能描述:DIGITAL THERMOMETER AND THERMOSTAT - Tape and Reel 制造商:Maxim Integrated Products 功能描述:Board Mount Temperature Sensors Digital Thermometer & Thermostat |
| DS1721U/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 |
| DS1721U/T&R+W | 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 |
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