- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376954 > DS1620S IC-SM-DIGITAL THERMOMETER PDF資料下載
參數(shù)資料
| 型號(hào)： | DS1620S |
| 元件分類： | 溫度傳感器 |
| 英文描述： | IC-SM-DIGITAL THERMOMETER |
| 中文描述： | 集成電路釤數(shù)字溫度計(jì) |
| 文件頁數(shù)： | 2/13頁 |
| 文件大?。?/td> | 539K |
| 代理商： | DS1620S |
DS1620
2 of 13
User–defined temperature settings are stored in nonvolatile memory, so parts can be programmed prior to
insertion in a system, as well as used in standalone applications without a CPU. Temperature settings and
temperature readings are all communicated to/from the DS1620 over a simple 3–wire interface.
OPERATION-MEASURING TEMPERATURE
A block diagram of the DS1620 is shown in Figure 1. The DS1620 measures temperatures through the
use of an onboard proprietary temperature measurement technique. A block diagram of the temperature
measurement circuitry is shown in Figure 2.
The DS1620 measures temperature by counting the number of clock cycles that an oscillator with a low
temperature coefficient goes through during a gate period determined by a high temperature coefficient
oscillator. The counter is preset with a base count that corresponds to –55
°
C. If the counter reaches 0
before the gate period is over, the temperature register, which is also preset to the –55
°
C value, is
incremented, indicating that the temperature is higher than –55
°
C.
At the same time, the counter is then preset with a value determined by the slope accumulator circuitry.
This circuitry is needed to compensate for the parabolic behavior of the oscillators over temperature. The
counter is then clocked again until it reaches 0. If the gate period is still not finished, then this process
repeats.
The slope accumulator is used to compensate for the nonlinear behavior of the oscillators over
temperature, yielding a high-resolution temperature measurement. This is done by changing the number
of counts necessary for the counter to go through for each incremental degree in temperature. To obtain
the desired resolution, therefore, both the value of the counter and the number of counts per degree C (the
value of the slope accumulator) at a given temperature must be known.
DS1620 FUNCTIONAL BLOCK DIAGRAM
Figure 1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1620 | Digital Thermometer and Thermostat |
| DS1629 | 2-Wire Digital Thermometer and Real Time Clock |
| DS1630ABL-70 | NVRAM (Battery Based) |
| DS1630ABL-70-IND | NVRAM (Battery Based) |
| DS1630ABL-85 | NVRAM (Battery Based) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1620S/T&R | 制造商:Maxim Integrated Products 功能描述:DIGITAL THERM. 8P SO 208M TRL - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERMOMETER/STAT DIG 8-SOIC |
| DS1620S/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(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 |
| DS1620S+ | 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(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 |
| DS1620S+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 制造商:Maxim Integrated Products 功能描述:Board Mount Temperature Sensors Digital Thermometer & Thermostat |
| DS1620S+T&R/C01 | 制造商:Maxim Integrated Products 功能描述:DIGITAL THERMOMETER AND THERMOSTAT - Tape and Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。