Overview
The TMP108AIYFFT from Texas Instruments is a low-power digital temperature sensor designed for thermal management optimization in various applications. This sensor features a dynamically-programmable limit window with under- and overtemperature alert functions, providing optimized temperature control without the need for frequent temperature readings by the controller or application processor. It operates over a wide temperature range of –40°C to +125°C and is compatible with SMBus and two-wire interface protocols.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Accuracy | ±0.75°C (–20°C to +85°C), ±1°C (–40°C to +125°C) | °C |
| Supply Range | 1.4 V to 3.6 V | V |
| Resolution | 12 bits (0.0625°C) | - |
| Quiescent Current | 6 µA (active, maximum) | µA |
| Package | 1.2-mm × 0.8-mm, 6-ball WCSP | - |
| Interface | SMBus and two-wire compatible | - |
| Operating Temperature Range | –40°C to +125°C | °C |
Key Features
- Dynamically-programmable limit window with under- and overtemperature alerts
- Low quiescent current of 6 µA (maximum) from –40°C to +125°C
- High resolution of 12 bits (0.0625°C)
- SMBus and two-wire interface compatibility
- Supports up to four devices on one bus with SMBus alert function
- Shutdown, one-shot, and continuous conversion modes for power management
- Programmable hysteresis and polarity for the ALERT pin
Applications
- Smartphone and tablet thermal management
- Battery management
- Thermostat control
- Undertemperature and overtemperature protection
- Environmental monitoring and HVAC systems
Q & A
- What is the accuracy of the TMP108 temperature sensor?
The TMP108 has an accuracy of ±0.75°C from –20°C to +85°C and ±1°C from –40°C to +125°C.
- What is the supply voltage range for the TMP108?
The supply voltage range is 1.4 V to 3.6 V.
- What is the resolution of the TMP108 temperature sensor?
The resolution is 12 bits, which corresponds to 0.0625°C.
- What are the different operational modes of the TMP108?
The TMP108 supports shutdown, one-shot, and continuous conversion modes.
- Is the TMP108 compatible with SMBus and two-wire interfaces?
- How many devices can be connected on one bus with the SMBus alert function?
Up to four devices can be connected on one bus with the SMBus alert function.
- What is the quiescent current of the TMP108?
The quiescent current is 6 µA (maximum) from –40°C to +125°C.
- What is the package type and size of the TMP108?
The package is a 1.2-mm × 0.8-mm, 6-ball WCSP.
- What are some common applications of the TMP108?
Common applications include smartphone and tablet thermal management, battery management, thermostat control, and environmental monitoring.
- Can the hysteresis and polarity of the ALERT pin be programmed?
