LM95221
- Accurately Senses Die Temperature of Remote ICs or Diode Junctions
- Remote Diode Fault Detection
- On-board Local Temperature Sensing
- Remote Temperature Readings
- 0.125°C LSb
- 10-bits Plus Sign or 11-bits Programmable Resolution
- 11-bits Resolves Temperatures Above 127°C
- Local Temperature Readings
- 0.25°C
- 9-bits Plus Sign
- Status Register Support
- Programmable Conversion Rate Allows User Optimization of Power Consumption
- Shutdown Mode One-shot Conversion Control
- SMBus 2.0 Compatible Interface, Supports TIMEOUT
- 8-pin VSSOP Package
Key Specifications
- Local Temperature Accuracy
- TA = 0°C to 85°C ± 3.0°C (max)
- Remote Diode Temperature Accuracy
- TA = 30°C to 50°C, TD = 45°C to 85°C
±1.0 °C (Max) - TA = 0°C to 85°C, TD = 25°C to 140°C
±3.0°C (Max)
- TA = 30°C to 50°C, TD = 45°C to 85°C
- Supply Voltage 3.0 V to 3.6 V
- Supply Current 2 mA (Typ)
All trademarks are the property of their respective owners.
The LM95221 is a dual remote diode temperature sensor in an 8-lead VSSOP package. The 2-wire serial interface of the LM95221 is compatible with SMBus 2.0. The LM95221 can sense three temperature zones, it can measure the temperature of its own die as well as two diode connected transistors. The diode connected transistors can be a thermal diode as found in Pentium and AMD processors or can simply be a diode connected MMBT3904 transistor. The LM95221 resolution format for remote temperature readings can be programmed to be 10-bits plus sign or 11-bits unsigned. In the unsigned mode the LM95221 remote diode readings can resolve temperatures above 127°C. Local temperature readings have a resolution of 9-bits plus sign.
The temperature of any ASIC can be accurately determined using the LM95221 as long as a dedicated diode (semiconductor junction) is available on the target die. The LM95221 remote sensor accuracy of ±1°C is factory trimmed for a series resistance of 2.7 ohms and 1.008 non-ideality factor.
技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | LM95221 Dual Remote Diode Digital Temperature Sensor with SMBus Interface 数据表 (Rev. B) | 2013年 3月 22日 | |||
应用手册 | Calibrating the ADC08xxxx Family of Ultra High-Speed Converters (cn) | 2008年 3月 6日 |
设计和开发
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SENSOREVAL — Eval Board Software For Hardware Monitors And Digital Temperature Sensors
SensorEval
SensorEval software supports the latest TI temperature sensor and hardware monitor evaluation boards via USB interface. It also allows access to sensors mounted directly on motherboards that support Intel chip sets.
- Download SensorEval Software and Manual
- Windows XP support is offered for (...)
支持的产品和硬件
产品
数字温度传感器
精密 ADC
封装 | 引脚 | CAD 符号、封装和 3D 模型 |
---|---|---|
VSSOP (DGK) | 8 | Ultra Librarian |
订购和质量
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
- 制造厂地点
- 封装厂地点