- 您现在的位置：买卖IC网 > PDF目录178070 > LM75BIM-5/NOPB (NATIONAL SEMICONDUCTOR CORP) DIGITAL TEMP SENSOR-SERIAL, 9BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT PDF资料下载
参数资料
| 型号： | LM75BIM-5/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | Switch/Digital Output Temperature Sensor |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 9BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT |
| 封装： | 0.150 INCH, SOP-8 |
| 文件页数： | 2/18页 |
| 文件大小： | 474K |
| 代理商： | LM75BIM-5/NOPB |
1265807
Note 14:
These interrupt mode resets of O.S. occur only when LM75 is read or placed in shutdown. Otherwise, O.S. would remain active indefinitely for any
event.
FIGURE 4. O.S. Output Temperature Response Diagram
1.4 TEMPERATURE DATA FORMAT
Temperature data can be read from the Temperature, T
OS Set
Point, and T
HYST Set Point registers; and written to the TOS
Set Point, and T
HYST Set Point registers. Temperature data is
represented by a 9-bit, two's complement word with an LSB
(Least Significant Bit) equal to 0.5°C:
Temperature
Digital Output
Binary
Hex
+125°C
0 1111 1010
0FAh
+25°C
0 0011 0010
032h
+0.5°C
0 0000 0001
001h
0°C
0 0000 0000
000h
0.5°C
1 1111 1111
1FFh
25°C
1 1100 1110
1CEh
55°C
1 1001 0010
192h
1.5 SHUTDOWN MODE
Shutdown mode is enabled by setting the shutdown bit in the
Configuration register via the I2C bus. Shutdown mode re-
duces power supply current significantly. See specified qui-
escent current specification in the electrical tables. In Interrupt
mode O.S. is reset if previously set and is undefined in Com-
parator mode during shutdown. The I2C interface remains
active. Activity on the clock and data lines of the I2C bus may
slightly increase shutdown mode quiescent current. T
OS,
T
HYST, and Configuration registers can be read from and writ-
ten to in shutdown mode.
For the LM75A and LM75B the TIMEOUT feature is turned
off in Shutdown Mode.
1.6 FAULT QUEUE
A fault queue of up to 6 faults is provided to prevent false
tripping of O.S. when the LM75 is used in noisy environments.
The number of faults set in the queue must occur consecu-
tively to set the O.S. output.
1.7 COMPARATOR/INTERRUPT MODE
As indicated in the O.S. Output Temperature Response Dia-
gram, Figure 4, the events that trigger O.S. are identical for
either Comparator or Interrupt mode. The most important dif-
ference is that in Interrupt mode the O.S. will remain set
indefinitely once it has been set. To reset O.S. while in Inter-
rupt mode, perform a read from any register in the LM75.
1.8 O.S. OUTPUT
The O.S. output is an open-drain output and does not have
an internal pull-up. A “high” level will not be observed on this
pin until pull-up current is provided from 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. This will minimize any
errors due to internal heating of the LM75. The maximum re-
sistance of the pull up, based on LM75 specification for High
Level Output Current, to provide a 2V high level, is 30 k
Ω.
www.national.com
10
LM75
相关PDF资料 |
PDF描述 |
|---|---|
| LM75 | 2-Wire Serial Temperature Sensor and Monitor |
| LM80CIMTX-32 | Serial Interface ACPI-Compatible Microprocessor System Hardware Monitor |
| LM9637EVAL-KIT | LM9637 Monochrome CMOS Image Sensor VGA 68 FPS |
| LM9647EVAL-KIT | LM9647 Color CMOS Image Sensor VGA 68 FPS |
| LM99-1CIMM | 【1C Accurate, High Temperature, Remote Diode Temperature Sensor with Two-Wire Interface |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM75BIMM-3 | 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 |
| LM75BIMM-3/NOPB | 功能描述:板上安装温度传感器 Digital Temp Sensor 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 |
| LM75BIMM-3/NOPB | 制造商:Texas Instruments 功能描述:Temperature Sensor IC |
| LM75BIMM-3+ | 功能描述:板上安装温度传感器 2-Wire Digital Temp Snsr & Thrml Wtchdog 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 |
| LM75BIMM-3+T | 功能描述:板上安装温度传感器 2-Wire Digital Temp Snsr & Thrml Wtchdog 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 |
发布紧急采购，3分钟左右您将得到回复。