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參數資料
型號: MAX6581TG9A+
廠商: Maxim Integrated
文件頁數: 23/27頁
文件大小: 1212K
描述: IC TEMP SENSOR 8-CH PREC 24-TQFN
產品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 75
功能: 溫度監控器
傳感器類型: 內部和外部
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:
輸出風扇:
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
  23
Maxim Integrated
?癈 Accurate 8-Channel Temperature Sensor
MAX6581
  Applications Information
Remote-Diode Selection
The MAX6581 directly measures the die temperature of CPUs
and other ICs that have on-chip temperature-sensing diodes
(see the Typical Application Circuit), or it can measure the
temperature of a discrete diode-connected transistor.
Discrete Remote Diodes
When the remote-sensing diode is a discrete transistor,
its collector and base must be connected together. Table
13 lists examples of discrete transistors that are appro-
priate for use with the MAX6581. The transistor must be
a small-signal type with a relatively high forward voltage;
otherwise, the A/D input-voltage range can be violated.
The forward voltage at the highest expected temperature
must be greater than 0.25V at 10FA, and at the low-
est expected temperature the forward voltage must be
less than 0.95V at 100FA. Large power transistors must
not be used. Also, ensure that the base resistance is
less than 100I. Tight specifications for forward-current
gain (e.g., 50 < A < 150) indicate that the manufacturer
has good process controls and that the devices have
consistent V
BE
 characteristics. Manufacturers of discrete
transistors do not normally specify or guarantee ideality
factor. This normally is not a problem since good-quality
discrete transistors tend to have ideality factors that fall
within a relatively narrow range. Variations in remote
temperature readings of less than Q2NC with a variety of
discrete transistors have been observed. However, it is
good design practice to verify good consistency of tem-
perature readings with several discrete transistors from
any supplier under consideration.
Unused Diode Channels
If one or more of the remote-diode channels is not need-
ed, disconnect the DXP_ and DXN_ inputs for that chan-
nel, or connect the DXP_ to the corresponding DXN_.
The status register indicates a diode fault for this
channel and the channel is ignored during the tempera-
ture-measurement sequence. It is also good practice to
mask any unused channels immediately upon power-up
by setting the appropriate bits in the ALERT Mask and
OVERT Mask registers. This prevents unused channels
from causing ALERT or OVERT to assert.
Table 15. Remote Sensors Transistor Suppliers (for Channels 17)
Note: Discrete transistors must be diode connected (base shorted to collector).
SUPPLIER
MODEL NO.
PNP
NPN
Central Semiconductor Corp. (USA)
CMPT3906
2N3906
CMPT3904
2N3904
Fairchild Semiconductor (USA)
MMBT3906
2N3906
2N3904
Infineon (Germany)
SMBT3906

ON Semiconductor (USA)
MMBT3906
2N3906
2N3904
ROHM Semiconductor (USA)
SST3906
SST3904
Samsung (Korea)
KST3906-TF
KST3904-TF
Siemens (Germany)
SMBT3906
SMBT3904
Zetex (England)
FMMT3906CT-ND
FMMT3904CT-ND
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相關代理商/技術參數
參數描述
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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