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參數(shù)資料
| 型號： | MAX6581TG9A+ |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 8/27頁 |
| 文件大?。?/td> | 1212K |
| 描述： | IC TEMP SENSOR 8-CH PREC 24-TQFN |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 75 |
| 功能： | 溫度監(jiān)控器 |
| 傳感器類型： | 內(nèi)部和外部 |
| 感應溫度： | -64°C ~ 150°C |
| 精確度： | ±3°C 本地（最大），±2.5°C 遠程（最大） |
| 輸出類型： | I²C?/SMBus? |
| 輸出警報： | 是 |
| 輸出風扇： | 是 |
| 電源電壓： | 3 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-WFQFN 裸露焊盤 |
| 供應商設備封裝： | 24-TQFN-EP（4x4） |
| 包裝： | 管件 |
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8
Maxim Integrated
?癈 Accurate 8-Channel Temperature Sensor
MAX6581
Detailed Description
The MAX6581 is a precision multichannel temperature
monitor that features one local and seven remote tem-
perature-sensing channels with a programmable alert
threshold for each temperature channel and a program-
mable overtemperature threshold for channels 17 (see
Figure 1). Communication with the MAX6581 is achieved
through the SMBus serial interface and a dedicated alert
pin (ALERT). The alarm outputs, (OVERT and ALERT)
assert if the software-programmed temperature thresh-
olds are exceeded. ALERT also asserts if the measured
temperature falls below the ALERT low limits. ALERT
typically serves as an interrupt, while OVERT can be
connected to a fan, system shutdown, or other thermal-
management circuitry.
ADC Conversion Sequence
The MAX6581 starts the conversion sequence by
measuring the temperature on channel 1, followed by 2,
local channel, 37. The conversion result for each active
channel is stored in the corresponding temperature data
register. No conversion is performed on any channel that
does not have a diode.
Low-Power Standby Mode
Enter software-standby mode by setting the STOP
bit to 1 in the Configuration register. Enter hardware-
standby by pulling STBY low. Software-standby mode
disables the ADC and reduces the supply current to
approximately 4FA. During either software or hardware
standby, data is retained in memory. During hardware
standby, the SMBus interface is inactive. During software
standby, the SMBus interface is active and listening for
commands. The timeout is enabled if a START condition
is recognized on SMBus. Activity on the SMBus causes
the supply current to increase. If a standby command is
received while a conversion is in progress, the conver-
sion cycle is interrupted, and the temperature registers
are not updated. The previous data is not changed and
remains available.
Operating-Current Calculation
The MAX6581 operates at different operating-current
levels depending on how many external channels are in
use and how many of those are in resistance cancella-
tion (RC) mode. The average operating current is:
N
R
AV
CC1
CC2
N
R
N
R
N 1
2 N
I
I
I
N
2 N
1
N
2 N
1
+
?/DIV>
=
+
?/DIV>
+ ?/DIV>
+
+ ?/DIV>
+
where:
N
N
= the number of remote channels that are operating
in normal mode.
N
R
= the number of remote channels that are in RC
mode.
I
AV
= the average operating power-supply current over a
complete series of conversions.
I
CC1
= the average operating power-supply current
during a conversion in normal mode.
I
CC2
= the average operating power-supply current
during a conversion in RC mode.
Pin Description (continued)
PIN
NAME
FUNCTION
21
GND
Ground
23
DXP1
Combined Current Source and ADC Positive Input for Channel 1 Remote Diode. Connect DXP1 to
the anode of a remote-diode-connected, temperature-sensing transistor. Leave DXP1 unconnected
or connect to DXN1 if a remote diode is not used. Connect a 100pF capacitor between DXP1 and
DXN1 for noise filtering.
24
DXN1
Cathode Input for Channel 1 Remote Diode. Connect the cathode of the channel 1 remote-diode-
connected transistor to DXN1. If the channel 1 remote transistor is a substrate pnp (e.g., on a CPU
die), connect the base of the pnp to DXN1. Leave DXN1 unconnected or connect to DXP1 if a
remote diode is not used. Connect a 100pF capacitor between DXP1 and DXN1 for noise filtering.
EP
Exposed Pad. Connect EP to GND.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6581TG9A+ | 功能描述:板上安裝溫度傳感器 1C Accurate 8Ch Temperature Sensor 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(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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| MAX6581TG9A+T | 功能描述:板上安裝溫度傳感器 1C Accurate 8Ch Temperature Sensor 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(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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| MAX6581TG9C+ | 功能描述:板上安裝溫度傳感器 1C Accurate 8Ch Temperature Sensor 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(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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| MAX6581TG9C+T | 功能描述:板上安裝溫度傳感器 1C Accurate 8Ch Temperature Sensor 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(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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| MAX6581TG9E+ | 功能描述:板上安裝溫度傳感器 1C Accurate 8Ch Temperature Sensor 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(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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
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