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| 型号： | LM95241CIMM/NOPB |
| 厂商： | National Semiconductor |
| 文件页数： | 12/29页 |
| 文件大小： | 0K |
| 描述： | IC TEMP SENS DUAL REM DIO 8-MSOP |
| 标准包装： | 1 |
| 系列： | PowerWise®, TruTherm® |
| 功能： | 温度监控系统（传感器） |
| 传感器类型： | 内部和外部 |
| 感应温度： | 0°C ~ 85°C，外部传感器 |
| 精确度： | ±3°C 本地（最大），±2.5°C 远程（最大） |
| 拓扑： | ADC（三角积分型），寄存器库 |
| 输出类型： | 2 线串行，I²C?/SMBUS? |
| 输出警报： | 无 |
| 输出风扇： | 无 |
| 电源电压： | 3 V ~ 3.6 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 标准包装 |
| 产品目录页面： | 1314 (CN2011-ZH PDF) |
| 配用： | LM95241EB-ND - BOARD EVALUATION LM95241 |
| 其它名称： | LM95241CIMM/NOPBDKR LM95241CIMMDKR LM95241CIMMDKR-ND |
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SNIS143E – AUGUST 2006 – REVISED MARCH 2013
Table 5. 13-bit, unsigned binary
Temperature
Binary
Digital Output
Hex
+255.875°C
+255°C
+201°C
+125°C
+25°C
+1°C
+0.03125°C
0°C
1111 1111 1110 0000
1111 1111 0000 0000
1100 1001 0000 0000
0111 1101 0000 0000
0001 1001 0000 0000
0000 0001 0000 0000
0000 0000 0000 1000
0000 0000 0000 0000
FFE0h
FF00h
C900h
7D00h
1900h
0100h
0008h
0000h
Local Temperature data is represented by a 10-bit, two's complement word with an LSb (Least Significant Bit)
equal to 0.25°C. The data format is a left justified 16-bit word available in two 8-bit registers. Unused bits will
always report "0". Local temperature readings greater than +127.75°C are clamped to +127.75°C, they will not
roll-over to negative temperature readings.
Temperature
Binary
Digital Output
Hex
+125°C
+25°C
+1°C
+0.25°C
0°C
? 0.25°C
? 1°C
? 25°C
? 55°C
0111 1101 0000 0000
0001 1001 0000 0000
0000 0001 0000 0000
0000 0000 0100 0000
0000 0000 0000 0000
1111 1111 1100 0000
1111 1111 0000 0000
1110 0111 0000 0000
1100 1001 0000 0000
7D00h
1900h
0100h
0040h
0000h
FFC0h
FF00h
E700h
C900h
SMBDAT OPEN-DRAIN OUTPUT
The SMBDAT output is an open-drain output and does not have internal pull-ups. A “high” level will not be
observed on this pin until pull-up current is provided by some external source, typically a pull-up resistor. Choice
of resistor value depends on many system factors but, in general, the pull-up resistor should be as large as
possible without effecting the SMBus desired data rate. This will minimize any internal temperature reading
errors due to internal heating of the LM95241. The maximum resistance of the pull-up to provide a 2.1V high
level, based on LM95241 specification for High Level Output Current with the supply voltage at 3.0V, is
82k Ω (5%) or 88.7k Ω (1%).
DIODE FAULT DETECTION
The LM95241 is equipped with operational circuitry designed to detect fault conditions concerning the remote
diodes. In the event that the D+ pin is detected as shorted to GND, D ? , V DD or D+ is floating, the Remote
Temperature reading is –128.000 °C if signed format is selected and +255.875 if unsigned format is selected. In
addition, the appropriate status register bits RD1M or RD2M (D1 or D0) are set.
COMMUNICATING WITH THE LM95241
The data registers in the LM95241 are selected by the Command Register. At power-up the Command Register
is set to “00”, the location for the Read Local Temperature Register. The Command Register latches the last
location it was set to. Each data register in the LM95241 falls into one of four types of user accessibility:
1. Read only
2. Write only
3. Write/Read same address
4. Write/Read different address
12
Product Folder Links: LM95241
Copyright ? 2006–2013, Texas Instruments Incorporated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM95241CIMMX | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| LM95241CIMMX/NOPB | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| LM95241CIMMX-1 | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| LM95241CIMMX-1/NOPB | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| LM95241CIMMX-2 | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
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