參數(shù)資料
型號: LM95235CIMM
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 溫度/濕度傳感器
英文描述: Precision Remote Diode Temperature Sensor with SMBus Interface and TruTherm Technology
中文描述: DIGITAL TEMP SENSOR-SERIAL, 11BIT(s), 2Cel, SQUARE, SURFACE MOUNT
封裝: MO-187, MSOP-8
文件頁數(shù): 10/25頁
文件大?。?/td> 784K
代理商: LM95235CIMM
1.0 Functional Description
(Continued)
7.
8.
9.
Remote TCRIT limit default is 6Eh (110 C).
Remote Offset High and Low bytes default to 00h.
Configuration Register 1 defaults to 00h. This sets the
LM95235 as follows:
A. The STOP/RUN defaults to the active/converting
mode.
B. The Local and Remote TCRIT and OS Masks are
reset to 0.
10. Configuration Register 2 defaults to 1Fh. This sets the
LM95235 as follows:
A. Remote Diode digital filter defaults on.
B. The Remote Diode mode defaults to a typical Intel
processor on 65/90 nm process.
C. Diode Fault Mask bit for TCRIT defaults to 1.
D. Diode Fault Mask bit for OS defaults to 0.
E. Pin 6 Function defaults to Address Input function
(A0).
1.3 SMBus INTERFACE
The LM95235 operates as a slave on the SMBus, so the
SMBCLK line is an input and the SMBDAT line is bidirec-
tional. The LM95235 never drives the SMBCLK line and it
does not support clock stretching. According to SMBus
specifications, the LM95235 has a 7-bit slave address. Three
SMBus addresses can be selected by connecting pin 6 (A0)
to either Low, Mid-Supply or High voltages. The address
selection table below shows the possible selections.
State of the A0 Pin
SMBus Device Address
HEX
18
29
4C
Binary
001 1000
010 1001
100 1100
Low
Mid-Supply
High
The OS/A0 pin, after power-up, defaults as an address
select input pin (A0). After power-up, the OS/A0 pin can only
be programmed as an OS output when it is in the “High”
state. Therefore, 4Ch is the only valid slave address that can
be used when the OS/A0 pin is programmed to function as
an OS output. When the OS/A0 pin is programmed to func-
tion as an A0 input the LM95235 will immediately detect the
state of this pin to determine its SMBus slave address. The
LM95235 does not latch the state of the A0 pin when it is
functioning as an input.
1.4 DIGITAL FILTER
In order to suppress erroneous remote temperature readings
due to noise, the LM95235 incorporates a digital filter for the
Remote Temperature Channel. The filter is accessed in the
Configuration Register 2, bits D2 (FE1) and D1(FE0). The
filter can be set according to the following table.
FE1
0
0
1
1
FE0
0
1
0
1
Filter Setting
Filter Off
Reserved
Reserved
Filter On
Figure 2
depicts the filter output in response to a step input
and an impulse input.
Figure 3
shows the filter in use in a typical Intel processor on
a 65/90 nm process system. Note that the two curves have
been purposely offset for clarity. Inserting the filter does not
induce an offset as shown.
20174925
a) Seventeen and fifty degree step response
20174926
b) Impulse response with input transients less than
4C
20174928
c) Impuse response with input transients greater than
4C
FIGURE 2. Filter Impulse and Step Response Curves
L
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM95235CIMM 制造商:Texas Instruments 功能描述:TEMP SENSE REM DIODE SMD MSOP8
LM95235CIMM/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
LM95235CIMMX 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
LM95235CIMMX/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
LM95235DIMM 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