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參數(shù)資料
| 型號： | ADM1027ARQZ-RL7 |
| 廠商： | ON Semiconductor |
| 文件頁數(shù)： | 42/56頁 |
| 文件大?。?/td> | 1822K |
| 描述： | IC REMOTE THERMAL CTLR 24QSOP |
| 產(chǎn)品變化通告： | MFG CHG Notification ADI to ON Semi Product Discontinuation Notice 25/Aug/2008 Product Obsolescence 30/Sept/2009 |
| 標準包裝： | 1,000 |
| 系列： | dBCool® |
| 功能： | 風(fēng)扇控制，溫度監(jiān)控器 |
| 傳感器類型： | 內(nèi)部和外部 |
| 感應(yīng)溫度： | 0°C ~ 105°C，外部傳感器 |
| 精確度： | ±1°C |
| 拓撲： | ADC，比較器，風(fēng)扇速度計數(shù)器，多路復(fù)用器，寄存器庫 |
| 輸出類型： | SMBus? |
| 輸出警報： | 無 |
| 輸出風(fēng)扇： | 是 |
| 電源電壓： | 3 V ~ 5.5 V |
| 工作溫度： | 0°C ~ 105°C |
| 安裝類型： | 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) |
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REV. A
42
ADM1027
Table V. Voltage Reading Registers (Power-On Default = 0x00)
Register Address
R/W
Description
0x20
Read-Only
2.5 V Reading (8 MSBs of reading).
0x21
Read-Only
V
CCP
Reading. Holds processor core voltage measurement (8 MSBs of reading).
0x22
Read-Only
V
CC
Reading. Measures V
CC
through the V
CC
pin (8 MSBs of reading).
0x23
Read-Only
5 V Reading (8 MSBs of reading).
0x24
Read-Only
12 V Reading (8 MSBs of reading).
If the extended resolution bits of these readings are also being read, the extended resolution registers (Reg. 0x76, 0x77) should be read
first. Once the extended resolution register is read, the associated MSB reading registers are frozen until read. Both the extended
resolution register and the MSB registers are frozen.
Table VI. Temperature Reading Registers (Power-On Default = 0x80)
Register Address
R/W
Description
0x25
Read-Only
Remote 1 Temperature Reading* (8 MSBs of reading).
0x26
Read-Only
Local Temperature Reading (8 MSBs of reading).
0x27
Read-Only
Remote 2 Temperature Reading* (8 MSBs of reading).
These temperature readings are in twos complement format.
*Note that a reading of 0x80 in a temperature reading register indicates a diode fault (open or short) on that channel. If the extended resolution bits of these readings
are also being read, the extended resolution registers (Reg. 0x76, 0x77) should be read first. Once the extended resolution register is read, all associated MSB reading
registers are frozen until read. Both the extended resolution register and the MSB registers are frozen.
Table VII. Fan Tachometer Reading Registers (Power-On Default = 0x00)
Register Address
R/W
Description
0x28
Read-Only
TACH1 Low Byte
0x29
Read-Only
TACH1 High Byte
0x2A
Read-Only
TACH2 Low Byte
0x2B
Read-Only
TACH2 High Byte
0x2C
Read-Only
TACH3 Low Byte
0x2D
Read-Only
TACH3 High Byte
0x2E
Read-Only
TACH4 Low Byte
0x2F
Read-Only
TACH4 High Byte
These registers count the number of 11.11 ms periods (based on an internal 90 kHz clock) that occur between a number of consecutive
fan tach pulses (default = 2). The number of tach pulses used to count can be changed using the fan pulses per revolution register
(Reg. 0x7B). This allows the fan speed to be accurately measured. Since a valid fan tachometer reading requires that two bytes are
read; the low byte MUST be read first. Both the low and high bytes are then frozen until read. At power-on, these registers contain
0x0000 until such time as the first valid fan tach measurement is read in to these registers. This prevents false interrupts from occurring
while the fans are spinning up.
A count of 0xFFFF indicates that a fan is:
1. Stalled or Blocked (object jamming the fan)
2. Failed (internal circuitry destroyed)
3. Not Populated (The ADM1027 expects to see a fan connected to
each TACH. If a fan is not connected to that TACH, its TACH
minimum high and low bytes should be set to 0xFFFF.)
4. 2-Wire Instead of 3-Wire Fan
Rev. 3 | Page 42 of 56 | www.onsemi.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADM1027ARQZ-RL71 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:dBCOOLa?￠ Remote Thermal Controller and Voltage Monitor |
| ADM1028 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Remote Thermal Diode Monitor with Linear Fan Control |
| ADM1028ARQ | 功能描述:IC SENSOR TEMP/FAN CTRL 16QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標準包裝: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 遠程（最大值） 拓撲:ADC，比較器，寄存器庫 輸出類型:2 線 SMBus? 輸出警報: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 |
| ADM1028ARQ-REEL7 | 制造商:Rochester Electronics LLC 功能描述:TDM + LINEAR FAN CONTROL I.C. - Tape and Reel |
| ADM1029 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Dual PWM Fan Controller and Temperature Monitor for High Availability Systems |
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