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參數資料
| 型號： | NE1617ADS,112 |
| 廠商： | NXP Semiconductors |
| 文件頁數： | 13/30頁 |
| 文件大小： | 305K |
| 描述： | IC TEMP MONITOR 16SSOP |
| 標準包裝： | 100 |
| 功能： | 溫度監控系統（傳感器） |
| 傳感器類型： | 內部和外部 |
| 感應溫度： | -55°C ~ 125°C，外部傳感器 |
| 精確度： | ±3°C 本地（最大），±5°C 遠程（最大） |
| 拓撲： | ADC，多路復用器，寄存器庫 |
| 輸出類型： | SMBus? |
| 輸出警報： | 是 |
| 輸出風扇： | 無 |
| 電源電壓： | 3 V ~ 5.5 V |
| 工作溫度： | -55°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SSOP（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 16-SSOP |
| 包裝： | 管件 |
| 其它名稱： | 935268119112 NE1617ADS NE1617ADS-ND |
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NE1617A
All information provided in this document is subject to legal disclaimers.
?NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 5 20 March 2012
13 of 30
NXP Semiconductors
NE1617A
Temperature monitor for microprocessor systems
9. Application design-in information
9.1 Factors affecting accuracy
9.1.1 Remote sensing diode
The NE1617A is designed to work with substrate transistors built into processors CPUs
or with discrete transistors. Substrate transistors are generally PNP types with the
collector connected to the substrate. Discrete types can be either a PNP or an NPN
transistor connected as a diode (base shorted to collector). If an NPN transistor is used,
the collector and base are connected to D+ and the emitter to D-. If a PNP transistor is
used, the collector and base are connected to D- and the emitter to D+. Substrate
transistors are found in a number of CPUs. To reduce the error due to variations in these
substrate and discrete transistors, a number of factors should be taken into consideration:
" The ideality factor, n
f
, of the transistor. The ideality factor is a measure of the deviation
of the thermal diode from the ideal behavior. The NE1617A is trimmed for an n
f
value
of 1.008. Equation 2
can be used to calculate the error introduced at a temperature
T 癈 when using a transistor whose n
f
does not equal 1.008. Consult the processor
data sheet for n
f
values.
This value can be written to the offset register and is automatically added to or
subtracted from the temperature measurement.
(2)
" Some CPU manufacturers specify the high and low current levels of the substrate
transistors. The I
source
high current level of the NE1617A is 100 mA and the low level
current is 10 mA.
If a discrete transistor is being used with the NE1617A, the best accuracy is obtained by
choosing devices according to the following criteria:
" Base-emitter voltage greater than 0.25 V at 6 mA, at the highest operating
temperature.
" Base-emitter voltage less than 0.95 V at 100 mA, at the lowest operating temperature.
" Base resistance less than 100 W.
" Small variation in h
FE
(say 50 to 150) that indicates tight control of V
BE
characteristics.
Transistors such as 2N3904, 2N3906, or equivalents in SOT23 packages are suitable
devices to use. See Table 11
for representative devices.
T
n
natural
1.008
(
)
1.008
------------------------------------------
273.15 Kelvin T
+
(
)
?/DIV>
=
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| NE1617DS | 功能描述:板上安裝溫度傳感器 I2C LOC +/- 2OC AND REM +/- 3OC TS 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 |
| NE1617DS,112 | 功能描述:板上安裝溫度傳感器 I2C LOC +/- 2OC AND 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 |
| NE1617DS,118 | 功能描述:板上安裝溫度傳感器 I2C LOC +/- 2OC AND REM +/- 3OC TS 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 |
| NE1618 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Temperature monitor for microprocessor systems |
| NE1618DS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Temperature monitor for microprocessor systems |
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