Overview
The TMP102AIDRLT, produced by Texas Instruments, is a low-power digital temperature sensor designed to replace NTC/PTC thermistors in applications requiring high accuracy. This device offers an accuracy of ±0.5°C without the need for calibration or external component signal conditioning. It features a 12-bit ADC, providing a resolution of 0.0625°C and does not require complex calculations or lookup tables to derive the temperature. The TMP102 is compatible with SMBus, two-wire, and I2C interfaces and supports up to four devices on a single bus.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 1.4V to 3.6V |
| Average Quiescent Current | 3.2µA to 7.5µA (depending on configuration) |
| Shutdown Current | 0.15µA to 0.35µA |
| Temperature Range | –40°C to 125°C (specified), –55°C to 150°C (operating) |
| Resolution | 12-bit, 0.0625°C |
| Conversion Time | 10ms to 15ms |
| Conversion Modes | 0.25, 1, 4, 8 conversions per second |
| Package | SOT563 (1.6mm × 1.6mm) |
| Interface | SMBus, two-wire, I2C |
Key Features
- High accuracy: ±0.5°C without calibration or external signal conditioning.
- Low power consumption: Average quiescent current of 3.2µA to 7.5µA.
- Compact package: SOT563 package, 68% smaller footprint than SOT-23.
- Multi-device support: Up to four devices on a single bus.
- SMBus alert function: Supports interrupt mode for overtemperature alerts.
- Linear temperature output: No complex calculations or lookup tables required.
- Integrated spike suppression filters and Schmitt triggers: Minimizes the effects of input spikes and bus noise.
Applications
The TMP102AIDRLT is designed for a variety of applications, including:
- Communication systems
- Computers and consumer electronics
- Environmental monitoring
- Industrial automation
- Instrumentation and thermal management
Q & A
- What is the operating temperature range of the TMP102AIDRLT?
The specified operating temperature range is –40°C to 125°C, with an extended operating range of –55°C to 150°C.
- What is the resolution of the TMP102AIDRLT temperature sensor?
The resolution is 12-bit, which translates to 0.0625°C per LSB.
- What interfaces does the TMP102AIDRLT support?
The device supports SMBus, two-wire, and I2C interfaces.
- How many devices can be connected on a single bus?
Up to four devices can be connected on a single bus.
- What is the supply voltage range for the TMP102AIDRLT?
The supply voltage range is from 1.4V to 3.6V.
- What is the average quiescent current of the TMP102AIDRLT?
The average quiescent current ranges from 3.2µA to 7.5µA, depending on the configuration.
- Does the TMP102AIDRLT require calibration or external signal conditioning?
No, it does not require calibration or external signal conditioning to achieve its specified accuracy.
- What is the package size of the TMP102AIDRLT?
The device comes in a SOT563 package, which is 1.6mm × 1.6mm in size.
- Does the TMP102AIDRLT support an alert function?
- What is the significance of the ALERT pin on the TMP102AIDRLT?
The ALERT pin is used to signal overtemperature conditions and can be connected as an SMBus alert signal.
