LM77 具有双线接口的 9 位 + 数字温度传感器和热窗形比较器
The LM77 is a digital temperature sensor and thermal window comparator with an I 2C ™ Serial Bus interface. The window-comparator architecture of the LM77 eases the design of temperature control systems conforming to the ACPI (Advanced Configuration and Power Interface) specification for personal computers. The open-drain Interrupt (INT) output becomes active whenever temperature goes outside a programmable window, while a separate Critical Temperature Alarm (T_CRIT_A) output becomes active when the temperature exceeds a programmable critical limit. The INT output can operate in either a comparator or event mode, while the T_CRIT_A output operates in comparator mode only.
The host can program both the upper and lower limits of the window as well as the critical temperature limit.
|
LM77 |
| Temp Resolution (Max) (bits) |
10 |
| Supply Voltage (Min) (V) |
3 |
| Supply Voltage (Max) (V) |
5.5 |
| Iq (Typ) (uA) |
500 |
| Interface |
2-Wire Serial |
| Sensor Type |
Local |
| Local Sensor Accuracy (Max) (+/- C) |
1.5 |
| Fault Queue |
Yes |
| Special Features |
Window comparator |
| Pin/Package |
8SOIC, 8VSSOP |
| Approx. Price (US$) |
0.86 | 1ku |
| Rating |
Catalog |
LM77 特性
- Window comparison simplifies design of ACPI compatible temperature monitoring and control.
- Serial Bus interface
- Separate open-drain outputs for Interrupt and Critical Temperature shutdown
- Shutdown mode to minimize power consumption
- Up to 4 LM77s can be connected to a single bus
- 9-bit + sign output; full-scale reading of over 128°C
- SOP and MSOP 8-lead packages
LM77 器件用途
- System Thermal Management
- Personal Computers
- Office Electronics
- Electronic Test Equipment
- Automotive
- HVAC
LM77 工具和软件
LM77 解决方案指南
LM77 应用技术支持与电子电路设计开发资源下载
- LM77 数据资料 dataSheet 下载.PDF
- TI 德州仪器温度传感器产品选型与价格 . xls
- (应用手册)Applying I2C Compatible Temperature Sensors in Systems with Slow Clock Edges
- (应用手册)Sensing and Monitoring for Control and Protection Seminar
