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參數(shù)資料
| 型號(hào)： | LM95221CIMMX |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | Dual Remote Diode Digital Temperature Sensor with SMBus Interface |
| 中文描述： | 雙遠(yuǎn)程二極管數(shù)字溫度傳感器，帶有SMBus接口 |
| 文件頁(yè)數(shù)： | 6/16頁(yè) |
| 文件大?。?/td> | 282K |
| 代理商： | LM95221CIMMX |
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SMBus Communication
20094309
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
DD
), the current at that pin should be limited to 5 mA.
Parasitic components and or ESD protection circuitry are shown in the figure below for the LM95221’s pins. The nominal breakdown voltage of D4 is 6.5 V. Care
should be taken not to forward bias the parasitic diode, D1, present on pins: D1+, D2+, D1, D2. Doing so by more than 50 mV may corrupt the temperature
measurements.
Pin Name
V
DD
D1+
D1
D2+
D2-
SMBDAT
SMBCLK
PIN #
1
2
3
4
6
7
8
D1
D2
D3
D4
x
x
x
x
x
x
x
D5
D6
D7
R1
SNP
ESD CLAMP
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Note: An “x” indicates that the component exists for the designated pin. SNP refers to a snap-back device.
Note 3:
See the URL ”http://www.national.com/packaging/“ for other recommendations and methods of soldering surface mount devices.
Note 4:
Human body model, 100pF discharged through a 1.5k
resistor. Machine model, 200pF discharged directly into each pin.
Note 5:
Thermal resistance junction-to-ambient when attached to a printed circuit board with 2 oz. foil:
– MSOP-8 = 210C/W
Note 6:
Typicals are at T
A
= 25C and represent most likely parametric norm.
Note 7:
Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8:
Local temperature accuracy does not include the effects of self-heating. The rise in temperature due to self-heating is the product of the internal power
dissipation of the LM95221 and the thermal resistance. See (Note 5) for the thermal resistance to be used in the self-heating calculation.
Note 9:
The accuracy of the LM95221CIMM is guaranteed when using the thermal diode with a non-ideality of 1.008 and series R= 2.7
. When using an
MMBT3904 type transistor as the thermal diode the error band will be offset by -3.25C
Note 10:
Quiescent current will not increase substantially with an SMBus.
Note 11:
This specification is provided only to indicate how often temperature data is updated. The LM95221 can be read at any time without regard to conversion
state (and will yield last conversion result).
Note 12:
The output rise time is measured from (V
IN(0)
max + 0.15V) to (V
IN(1)
min 0.15V).
Note 13:
The output fall time is measured from (V
IN(1)
min - 0.15V) to (V
IN(1)
min + 0.15V).
Note 14:
Holding the SMBDAT and/or SMBCLK lines Low for a time interval greater than t
TIMEOUT
will reset the LM95221’s SMBus state machine, therefore setting
SMBDAT and SMBCLK pins to a high impedance state.
20094313
FIGURE 1. ESD Protection Input Structure
L
www.national.com
6
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM95221CIMMX/NOPB | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)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(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| LM95221EVAL | 功能描述:溫度傳感器開(kāi)發(fā)工具 LM95221 EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:Temperature Sensors and Control ICs 工具用于評(píng)估:MSP430G2553 接口類型:USB 工作電源電壓: 工作電源電流: |
| LM95231 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:TruTherm Precision Dual Remote Diode Temperature Sensor with SMBus Interface |
| LM95231_06 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Precision Dual Remote Diode Temperature Sensor with SMBus Interface and TruTherm Technology |
| LM95231BIMM | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)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(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
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