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參數(shù)資料
| 型號： | LM75BD,112 |
| 廠商： | NXP Semiconductors |
| 文件頁數(shù)： | 10/37頁 |
| 文件大?。?/td> | 520K |
| 描述： | IC TEMP SENSOR DIGITAL 8-SOIC |
| 特色產(chǎn)品： | Digital Temperature Sensor / Thermal Watchdog |
| 標(biāo)準(zhǔn)包裝： | 100 |
| 功能： | 溫度監(jiān)視系統(tǒng)（傳感器），監(jiān)視器 |
| 傳感器類型： | 內(nèi)部 |
| 感應(yīng)溫度： | -55°C ~ 125°C |
| 精確度： | ±3°C（最小值） |
| 拓?fù)洌?/td> | ADC（三角積分型），比較器，振蕩器，寄存器庫 |
| 輸出類型： | 2 線串行，I²C? |
| 輸出警報： | 無 |
| 輸出風(fēng)扇： | 是 |
| 電源電壓： | 2.8 V ~ 5.5 V |
| 工作溫度： | -55°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SO |
| 包裝： | 管件 |
| 其它名稱： | 935285837112 LM75BD LM75BD-ND |
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LM75B
All information provided in this document is subject to legal disclaimers.
?NXP B.V. 2014. All rights reserved.
Product data sheet
Rev. 5 22 January 2014
10 of 37
NXP Semiconductors
LM75B
Digital temperature sensor and thermal watchdog
For 9-bit Temp data application in replacing the industry standard LM75, just use only
9 MSB bits of the two bytes and disregard 7 LSB of the LSByte. The 9-bit Temp data with
0.5 癈 resolution of the LM75B is defined exactly in the same way as for the standard
LM75 and it is here similar to the Tos and Thyst registers.
The only MSByte of the temperature can also be read with the use of a one-byte reading
command. Then the temperature resolution will be 1.00 癈 instead.
7.4.4 Overtemperature shutdown threshold (Tos) and hysteresis (Thyst) registers
These two registers, are write/read registers, and also called set-point registers. They are
used to store the user-defined temperature limits, called overtemperature shutdown
threshold (T
th(ots)
) and hysteresis temperature (T
hys
), for the device watchdog operation.
At the end of each conversion the Temp data will be compared with the data stored in
these two registers in order to set the state of the device OS output; see Section 7.1
.
Each of the set-point registers contains two 8-bit data bytes consisting of one MSByte and
one LSByte the same as register Temp. However, only 9 bits of the two bytes are used to
store the set-point data in twos complement format with the resolution of 0.5 癈. Table 11
and Table 12
show the bit arrangement of the Tos data and Thyst data in the data bytes.
Notice that because only 9-bit data are used in the set-point registers, the device uses
only the 9 MSB of the Temp data for data comparison.
When a set-point register is read, all 16 bits are provided to the bus and must be collected
by the controller to complete the bus operation. However, only the 9 most significant bits
should be used and the 7 LSB of the LSByte are equal to zero and should be ignored.
Table 13
shows examples of the limit data and value.
111 0011 1000
738
-200
-25.000 癈
110 0100 1001
649
-439
-54.875 癈
110 0100 1000
648
-440
-55.000 癈
Table 10. Temp register value &continued
11-bit binary
(twos complement)
Hexadecimal value
Decimal value
Value
Table 11. Tos register
MSByte
LSByte
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
D8 D7 D6 D5 D4 D3 D2 D1 D0
X
X
X
X
X
X
X
Table 12. Thyst register
MSByte
LSByte
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
D8 D7 D6 D5 D4 D3 D2 D1 D0
X
X
X
X
X
X
X
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| LM75BDP | 制造商:NXP Semiconductors 功能描述:IC TEMP SENSOR DIGITAL 8-TSSOP 制造商:NXP Semiconductors 功能描述:IC, TEMP SENSOR, DIGITAL, 8-TSSOP |
| LM75BDP,118 | 功能描述:板上安裝溫度傳感器 I2C LOCAL +/- 20C TS DIGITAL TEMP SENSOR 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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