Support software
DIGITALTEMPSENSORSEVM-SW — Eval Board Software for Hardware Monitors and Digital Temp Sensors
Evaluation Board Software for Hardware Monitors and Digital Temperature Sensors
LM95221
±3°C dual remote & local temperature sensor with beta compensation and SMBus, I2C
Data sheet
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.
Technical documentation
No results found. Please clear your search and try again.
View all 1 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LM95221 Dual Remote Diode Digital Temperature Sensor with SMBus Interface datasheet (Rev. B) | 22 Mar 2013 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Support software
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 (...)
Supported products & hardware
Products
Digital temperature sensors
Precision ADCs
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VSSOP (DGK) | 8 | Ultra Librarian |
Ordering & quality
Information included:
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Information included:
- Fab location
- Assembly location
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.