參數(shù)資料
型號(hào)： ADM1030ARQZ
廠商： ANALOG DEVICES INC
元件分類： 溫度/濕度傳感器
英文描述： DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 1Cel, RECTANGULAR, SURFACE MOUNT
封裝： MO-137AB, QSOP-16
文件頁數(shù)： 6/28頁
文件大?。?/td> 495K
代理商： ADM1030ARQZ
REV. A
ADM1030
–14–
It should be noted however, that changing the minimum PWM
duty cycle affects the control loop behavior.
Slope 1 of Figure 10 shows TMIN set to 0
∞C and the TRANGE
chosen is 40
∞C. In this case, the fan’s PWM duty cycle will vary
over the range 33% to 100%. The fan will run full-speed at
40
∞C. If the minimum PWM duty cycle at which the fan runs at
TMIN is changed, its effect can be seen on Slopes 2 and 3. Take
Case 2, where the minimum PWM duty cycle is reprogrammed
from 33% (default) to 53%.
TEMPERATURE – C
100
93
87
80
73
66
60
47
40
33
TMIN
16
28
40
60
0
PWM
DUTY
CYCLE
–
%
53
T RANGE
=
40
C
Figure 10. Effect of Changing Minimum Duty Cycle on
Control Loop with Fixed TMIN and TRANGE Values
The fan will actually reach full-speed at a much lower tempera-
ture, 28
∞C. Case 3 shows that when the minimum PWM duty
cycle was increased to 73%, the temperature at which the fan
ran full-speed was 16
∞C. So the effect of increasing the mini-
mum PWM duty cycle, with a fixed TMIN and fixed TRANGE, is
that the fan will actually reach full-speed (TMAX) at a lower
temperature than TMIN + TRANGE. How can TMAX be calculated?
In Automatic Fan Speed Control Mode, the register that
holds the minimum PWM duty cycle at TMIN, is the Fan Speed
Config Register (Register 0x22). Table VII shows the relation-
ship between the decimal values written to the Fan Speed Config
Register and PWM duty cycle obtained.
Table VII. Programming PWM Duty Cycle
Decimal Value
PWM Duty Cycle
00
0%
01
7%
02
14%
03
20%
04
27%
05
33% (Default)
06
40%
07
47%
08
53%
09
60%
10 (0x0A)
67%
11 (0x0B)
73%
12 (0x0C)
80%
13 (0x0D)
87%
14 (0x0E)
93%
15 (0x0F)
100%
The temperature at which the fan will run full-speed (100%
duty cycle) is given by:
TMAX = TMIN + ((Max DC – Min DC)
TRANGE/10)
where,
TMAX
=Temperature at which fan runs full-speed.
TMIN
=Temperature at which fan will turn on.
Max DC =Maximum Duty Cycle (100%) = 15 decimal.
Min DC =Duty Cycle at TMIN, programmed into Fan Speed
Config Register (default = 33% = 5 decimal).
TRANGE
=PWM Duty Cycle versus Temperature Slope.
Example 1
TMIN
=0
∞C, TRANGE = 40∞C
Min DC = 53% = 8 decimal (Table VII)
Calculate TMAX.
TMAX
=TMIN + ((Max DC – Min DC)
TRANGE/10)
TMAX
=0 + ((100% DC – 53% DC)
40/10)
TMAX
=0 + ((15 – 8)
4) = 28
TMAX
= 28 C (As seen on Slope 2 of Figure 10)
Example 2
TMIN
=0
∞C, TRANGE = 40∞C
Min DC = 73% = 11 Decimal (Table VII)
Calculate TMAX.
TMAX
=TMIN + ((Max DC – Min DC)
TRANGE/10)
TMAX
=0 + ((100% DC – 73% DC)
40/10)
TMAX
=0 + ((15 – 11)
4) = 16
TMAX
= 16 C (As seen on Slope 3 of Figure 10)
Example 3
TMIN
=0
∞C, TRANGE = 40∞C
Min DC = 33% = 5 Decimal (Table VII)
Calculate TMAX.
TMAX
=TMIN + ((Max DC – Min DC)
TRANGE/10)
TMAX
=0 + ((100% DC – 33% DC)
40/10)
TMAX
=0 + ((15 – 5)
4) = 40
TMAX
= 40 C (As seen on Slope 1 of Figure 10)
In this case, since the Minimum Duty Cycle is the default 33%,
the equation for TMAX reduces to:
TMAX
=TMIN + ((Max DC – Min DC)
TRANGE/10)
TMAX
=TMIN + ((15 – 5)
TRANGE/10)
TMAX
=TMIN + (10
TRANGE/10)
TMAX
= TMIN + TRANGE
相關(guān)PDF資料
PDF描述
ADM1030ARQ DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 1Cel, RECTANGULAR, SURFACE MOUNT
ADM1031ARQZ-R7 DIGITAL TEMP SENSOR-SERIAL, 11BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT
ADM1031ARQZ-REEL DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT
ADM1031ARQZ-REEL7 DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT
ADM1031ARQZ DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADM1030ARQZ-REEL 功能描述:板上安裝溫度傳感器 TDM PWM FAN CTRLRS IC 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
ADM1030ARQZ-REEL7 功能描述:IC SNSR TEMP/FAN PWM CTRL 16QSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類型:內(nèi)部和外部 感應(yīng)溫度:-40°C ~ 125°C，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠(yuǎn)程（最大值） 拓?fù)?ADC，比較器，寄存器庫 輸出類型:2 線 SMBus? 輸出警報(bào):無 輸出風(fēng)扇:無 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應(yīng)商設(shè)備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6
ADM1030ARQZ-RL7 功能描述:IC SNSR TEMP/FAN PWM CTRL 16QSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類型:內(nèi)部和外部 感應(yīng)溫度:-40°C ~ 125°C，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠(yuǎn)程（最大值） 拓?fù)?ADC，比較器，寄存器庫 輸出類型:2 線 SMBus? 輸出警報(bào):無 輸出風(fēng)扇:無 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應(yīng)商設(shè)備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6
ADM1031 制造商:AD 制造商全稱:Analog Devices 功能描述:Intelligent Temperature Monitor and Dual PWM Fan Controller
ADM1031ARQ 功能描述:IC SENSOR 2-TEMP/FAN CTRL 16QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類型:內(nèi)部和外部 感應(yīng)溫度:-40°C ~ 125°C，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠(yuǎn)程（最大值） 拓?fù)?ADC，比較器，寄存器庫 輸出類型:2 線 SMBus? 輸出警報(bào):無 輸出風(fēng)扇:無 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應(yīng)商設(shè)備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*