參數(shù)資料
型號(hào)： ADM1029ARQZ-R7
廠商： ON Semiconductor
文件頁(yè)數(shù)： 14/50頁(yè)
文件大?。?/td> 402K
描述： IC SENSOR 2TEMP/FAN CTRL 24QSOP
產(chǎn)品變化通告： QSOP 24ld Pkg (MSL) Change 17/Jun/2010
標(biāo)準(zhǔn)包裝： 1,000
功能： 風(fēng)扇控制，溫度監(jiān)控器
傳感器類(lèi)型： 內(nèi)部和外部
感應(yīng)溫度： 0°C ~ 100°C，外部傳感器
精確度： ±1°C 本地，±3°C 遠(yuǎn)程
拓?fù)洌?/td> ADC，風(fēng)扇控制，寄存器庫(kù)
輸出類(lèi)型： 開(kāi)路漏極
輸出警報(bào)： 是
輸出風(fēng)扇： 是
電源電壓： 3 V ~ 5.5 V
工作溫度： 0°C ~ 100°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 24-SSOP（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 24-QSOP
包裝： 帶卷 (TR)
ADM1029
http://onsemi.com
14
If two fans are installed, Bit 0 would be 1 by default and
Pin 18 would be tied high* to set Bit 1. If only one fan is
installed, it would normally be Fan 1 and Pin 18 would be
tied low* to clear Bit 1. However, both of these bits can be
modified by writing to the register, so it is possible to have
Fan 2 installed and not Fan 1, or even have no fans installed.
* Note that Pin 18 also sets TMIN for automatic fan speed control. If
this function is used, Pin 18 would be set to some other level
according to Table 13.
FAULT
 Inputs/Outputs
The ADM1029 can be used with fans that have a fault
output which indicates if the fan has stalled or failed. If one
or both of the FAULT
 inputs (Pin 2 or Pin 23) goes low, both
INT
 and CFAULT
 will be asserted.
Events on the fault inputs are also reflected in Bits 2 and
3 of the corresponding Fan Status Registers at addresses 10h
and 11h. Bit 2 reflects the inverse state of the FAULT
 pin (0
if FAULT
 is high, 1 if FAULT
 is low), while Bit 3 is latched
high if a FAULT
 input goes low. It must be cleared by writing
a zero to it.
If the fan(s) being used do not have a FAULT
 output, the
FAULT
 input(s) on the ADM1029 should be pulled high to
V
CC
.
The FAULT
 pins can also be configured as open-drain
outputs by setting Bit 5 of the corresponding Fan Fault
Action Register (18h or 19h). If a FAULT
 pin is configured
as an output, it will still function as an input. This means that
when a fault input occurs it will be latched low by the fault
output, even if the fault input is removed. The fault output
can be used to drive a fan failure indicator such as an LED.
If the FAULT
 pin is used as an output, any input to the
FAULT
 pin should also be open-drain. This will avoid the
fault input trying to source a high current into the FAULT
 pin
if the fault input goes high while the fault output is low.
Fan Present Inputs
The fan PRESENT
 signal is implemented by a shorting
link to ground in the fan connector. When the fan is plugged
in, the corresponding PRESENT
 input (Pin 4 or Pin 21) on
the ADM1029 is pulled low. If the fan is unplugged, the
PRESENT
 input will be pulled high. INT
 and CFAULT
 will
be asserted (unless masked) and the event will be reflected
in Bits 0 and Bit 1 of the corresponding Fan Status Register.
Appearance or disappearance of a PRESENT
 input signal
during normal operation signals to the ADM1029 that a fan
has been hot-plugged or unplugged. INT
 and CFAULT
 will
be asserted (unless masked). When a fan is hot-plugged,
Bit 7 of the corresponding Fan Status Register will be set
and a Fan Free Wheel Test commences automatically.
Fan Speed Measurement
The fan counter does not count the fan tach output pulses
directly, because at low fan speeds it would take several
seconds to accumulate a reasonably large and accurate
count. Instead, the period of the fan revolution is measured
by gating an onchip oscillator into the input of an 8-bit
counter.
The fan speed measuring circuit is initialized on the first
rising edge of a fan tach pulse after monitoring is enabled by
setting Bit 4 of the Configuration Register. It then starts
counting on the rising edge of the second tach pulse and
counts for four fan tach periods, until the rising edge of the
sixth tach pulse, or until the counter overranges if the fan
tach period is too long.
After the speed of the first fan has been measured, the
speed of the second fan (if installed) will be measured in the
same way. The measurement cycle will repeat until
monitoring is disabled. The fan speed measurements are
stored in the Fan Tach Value registers at addresses 70h and
71h.
If both fans are installed, Fan 1 will be measured first. If
only one fan is installed, the ADM1029 will still try to
measure both fans, starting with Fan 1, but the measurement
on the noninstalled fan will time out when the Fan Tach
Value count overranges.
The fan speed count is given by:
(eq. 2)
Count + f 4 60RN
where:
f is oscillator frequency in Hz
factor 4 is because 4 tach periods are counted
factor 60 is to convert minutes to seconds
R = fan speed in RPM
N is number of tach pulses per revolution
The frequency of the oscillator can be adjusted to suit the
expected frequency range of the fan tach pulses, which
depends on the fan speed and the number of tach pulses
produced for each revolution of the fan, which is either 1, 2,
or 4. The oscillator frequency is set by Bits 7 and 6 of the Fan
Configuration Registers (68h for Fan 1 and 69h for Fan 2).
Table 8. OSCILLATOR FREQUENCIES
Bit 7
Bit 6
Oscillator Frequency (Hz)
0
0
Measurement Disabled
0
1
470
1
0
940
1
1
1880
Figure 24. Fan Speed Measurement
CLOCK
CONFIG
REG. BIT 4
FAN 1
TACH
FAN 1
MEASUREMENT
PERIOD
FAN 2
MEASUREMENT
PERIOD
START OF
MONITORING
CYCLE
FAN 2
TACH
相關(guān)PDF資料
PDF描述
ADM1030ARQZ-RL7 IC SNSR TEMP/FAN PWM CTRL 16QSOP
ADM1032ARZ-REEL IC TEMP MONITOR 85DEG 8SOIC
ADM1033ARQZ-RL7 IC THERM/FAN SPEED CTLR 16-QSOP
ADM1034ARQZ-REEL IC THERM/FAN SPEED CTRLR 16-QSOP
ADN8810ACPZ-REEL7 IC CURRENT SOURCE(12BIT) 24LFCSP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADM1030 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Intelligent Temperature Monitor and PWM Fan Controller
ADM1030ARQ 功能描述:IC SNSR TEMP/FAN PWM CTRL 16QSOP RoHS:否 類(lèi)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(lèi)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(kù) 輸出類(lèi)型:2 線 SMBus? 輸出警報(bào):無(wú) 輸出風(fēng)扇:無(wú) 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類(lèi)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(chēng):296-22675-6
ADM1030ARQ-REEL 功能描述:IC SNSR TEMP/FAN PWM CTRL 16QSOP RoHS:否 類(lèi)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(lèi)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(kù) 輸出類(lèi)型:2 線 SMBus? 輸出警報(bào):無(wú) 輸出風(fēng)扇:無(wú) 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類(lèi)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(chēng):296-22675-6
ADM1030ARQ-REEL7 功能描述:IC SNSR TEMP/FAN PWM CTRL 16QSOP RoHS:否 類(lèi)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(lèi)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(kù) 輸出類(lèi)型:2 線 SMBus? 輸出警報(bào):無(wú) 輸出風(fēng)扇:無(wú) 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類(lèi)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(chēng):296-22675-6
ADM1030ARQZ 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 TDM & PWM FAN CNTRLRS IC RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類(lèi)型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。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(gòu)。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(gòu)

我的聯(lián)系方式

*
*
*