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參數(shù)資料
| 型號： | LM70 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | SPI/MICROWIRE⑩ 10-Bit plus Sign Digital Temperature Sensor |
| 中文描述： | 的SPI / MICROWIRE的⑩10位帶符號數(shù)字溫度傳感器 |
| 文件頁數(shù)： | 6/13頁 |
| 文件大小： | 285K |
| 代理商： | LM70 |
Logic Electrical Characteristics
(Continued)
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating
the device beyond its rated operating conditions.
Note 2:
When the input voltage (V
I
) at any pin exceeds the power supplies (V
I
<
GND or V
I
>
+V
S
) the current at that pin should be limited to 5 mA. The 20 mA
maximum package input current rating limits the number of pins that can safely exceed the power supplies with an input current of 5 mA to four.
Note 3:
See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” or the section titled “Surface Mount” found in a current National Semicon-
ductor Linear Data Book for other methods of soldering surface mount devices.
Note 4:
Human body model, 100 pF discharged through a 1.5 k
resistor. Machine model, 200 pF discharged directly into each pin.
Note 5:
The life expectancy of the LM70 will be reduced when operating at elevated temperatures. LM70
θ
JA
(thermal resistance, junction-to-ambient) when at-
tached to a printed circuit board with 2 oz. foil is summarized in the table below:
Device Number
NS Package
Number
LDA08A
MUA08A
Thermal
Resistance (
θ
JA
)
51.3C/W
200C/W
LM70CILD
LM70CIMM
Note 6:
Both part numbers of the LM70 will operate properly over the V
+
supply voltage range of 2.65V to 5.5V. The temperature error for temperature ranges of
10C to +65C, 40C to +85C, 55C to +125C and 55C to +150C include error induced by power supply variation of
±
5% from the nominal value. Tempera-
ture error will increase by
±
0.3C for a power supply voltage (V
) variation of
±
10% from the nominal value.
Note 7:
Typicals are at T
A
= 25C and represent most likely parametric norm.
Note 8:
Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 9:
This specification is provided only to indicate how often temperature data is updated. The LM70 can be read at any time without regard to conversion state
(and will yield last conversion result). A conversion in progress will not be interrupted. The output shift register will be updated at the completion of the read and a
new conversion restarted.
Note 10:
For best accuracy, minimize output loading. Higher sink currents can affect sensor accuracy with internal heating. This can cause an error of 0.64C at full
rated sink current and saturation voltage based on junction-to-ambient thermal resistance.
L
www.national.com
6
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相關(guān)代理商/技術(shù)參數(shù) |
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| LM70_06 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SPI/MICROWIRE 10-Bit plus Sign Digital Temperature |
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| LM7000N | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Direct PLL Frequency Synthesizer for Electronic Tuning |
| LM7001 | 制造商:Panasonic Industrial Company 功能描述:IC |
| LM7001J | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Direct PLL Frequency Synthesizers for Electronic Tuning |
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