- 制造厂商:TI
- 产品类别:传感器
- 技术类目:温度传感器和控制 IC - 数字温度传感器
- 功能描述:具有 SPI 接口的 ±1.25°C 温度传感器
- 点击这里打开及下载LM74的技术文档资料
- TI代理渠道,提供当日发货、严格的质量标准,满足您的目标价格
The LM74 is a temperature sensor, Delta-Sigma analog-to-digital converter with an SPI and MICROWIRE compatible interface. The host can query the LM74 at any time to read temperature. A shutdown mode decreases power consumption to less than 10 μA. This mode is useful in systems where low average power consumption is critical.
The LM74 has 12-bit plus sign temperature resolution (0.0625°C per LSB) while operating over a temperature range of −55°C to +150°C.
The LM74's 3.0V to 5.5V supply voltage range, low supply current and simple SPI interface make it ideal for a wide range of applications. These include thermal management and protection applications in hard disk drives, printers, electronic test equipment, and office electronics. The LM74 is available in the SOIC package as well as the 5-Bump DSBGA package.
- 0.0625°C Temperature Resolution
- Shutdown Mode Conserves Power Between Temperature Reading
- SPI and MICROWIRE Bus Interface
- 5-Bump DSBGA Package Saves Space
- Supply Voltage 3.0V or 2.65V to 5.5V
- Supply Current
- Operating265μA (typ)520μA (max)
- Shutdown3μA (typ)
- Temperature Accuracy
- ?10°C to 65°C, ±1.25°C(max)
- ?25°C to 110°C, ±2.1°C(max)
- ?55°C to 125°C, ±3°C(max)
All trademarks are the property of their respective owners.
- Local sensor accuracy (Max) (+/- C)
- 1.25
- Type
- Local
- Operating temperature range (C)
- -40 to 125, -55 to 150
- Supply voltage (Min) (V)
- 2.65, 3
- Interface type
- SPI
- Supply voltage (Max) (V)
- 5.5
- Supply current (Max) (uA)
- 470
- Temp resolution (Max) (bits)
- 13
- Remote channels (#)
- 0
- Rating
- Catalog
LM74的完整型号有:LM74CIM-3/NOPB、LM74CIM-5/NOPB、LM74CIMX-3/NOPB、LM74CIMX-5/NOPB、LM74CITP-3/NOPB、LM74CITPX-3/NOPB、LM74CIM-3、LM74CIM-5、LM74CIMX-3,以下是这些产品的关键参数及官网采购报价:
LM74CIM-3/NOPB,工作温度:-55 to 150,封装:SOIC (D)-8,包装数量MPQ:95个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM74CIM-3/NOPB的批量USD价格:1.118(1000+)
LM74CIM-5/NOPB,工作温度:-55 to 150,封装:SOIC (D)-8,包装数量MPQ:95个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM74CIM-5/NOPB的批量USD价格:1.118(1000+)
LM74CIMX-3/NOPB,工作温度:-55 to 150,封装:SOIC (D)-8,包装数量MPQ:2500个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM74CIMX-3/NOPB的批量USD价格:0.939(1000+)
LM74CIMX-5/NOPB,工作温度:-55 to 150,封装:SOIC (D)-8,包装数量MPQ:2500个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM74CIMX-5/NOPB的批量USD价格:0.939(1000+)
LM74CITP-3/NOPB,工作温度:-40 to 125,封装:DSBGA (YTA)-5,包装数量MPQ:250个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SNAGCU,TI官网LM74CITP-3/NOPB的批量USD价格:1.118(1000+)
LM74CITPX-3/NOPB,工作温度:-40 to 125,封装:DSBGA (YTA)-5,包装数量MPQ:3000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SNAGCU,TI官网LM74CITPX-3/NOPB的批量USD价格:0.939(1000+)
LM74CIM-3,工作温度:-55 to 150,封装:SOIC (D)-8,包装数量MPQ:95个,MSL 等级/回流焊峰值温度:Level-1-235C-UNLIM,引脚镀层/焊球材料:SNPB,TI官网LM74CIM-3的批量USD价格:1.43(1000+)
LM74CIM-5,工作温度:-55 to 150,封装:SOIC (D)-8,包装数量MPQ:95个,MSL 等级/回流焊峰值温度:Level-1-235C-UNLIM,引脚镀层/焊球材料:SNPB,TI官网LM74CIM-5的批量USD价格:1.43(1000+)
LM74CIMX-3,工作温度:-55 to 150,封装:SOIC (D)-8,包装数量MPQ:2500个,MSL 等级/回流焊峰值温度:Level-1-235C-UNLIM,引脚镀层/焊球材料:SNPB,TI官网LM74CIMX-3的批量USD价格:1.252(1000+)
LM70SW-LINUX — 用于 LM70 的 Linux 驱动程序
Linux 驱动程序支持 LM70 系列温度传感器。Linux 驱动程序支持通过 SPI 总线和接口与硬件监测子系统进行通信。Linux 主线状态
在 Linux 主线中提供:是
可通过 git.ti.com 获取:不适用
- lm70
- tmp121
- lm71
- lm74
与该器件关联的文件为:
drivers/hwmon/lm70.c
其他文件Documentation/hwmon/lm70
启用驱动程序支持 使用“make (...)