Overview
The TMP102, produced by Texas Instruments, is a low-power digital temperature sensor designed to replace NTC/PTC thermistors in applications where high accuracy is required. This device offers a high degree of accuracy and linearity, making it suitable for a wide range of temperature measurement needs. The TMP102 operates over a supply voltage range of 1.4V to 3.6V and features an SMBus, two-wire, and I2C interface compatibility, allowing for easy integration into various systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 1.4 to 3.6 | V |
| Operating Temperature Range | –40 to 125 | °C |
| Accuracy | ±0.5 | °C (from –40°C to 125°C) |
| Resolution | 12 bits | |
| Temperature Resolution | 0.0625 | °C |
| Quiescent Current (Active) | 7.5 | µA |
| Quiescent Current (Shutdown) | 0.35 | µA |
| Interface | SMBus, Two-Wire, I2C | |
| Package | SOT563 (1.6mm × 1.6mm) |
Key Features
- High accuracy of ±0.5°C without requiring calibration or external component signal conditioning.
- Low quiescent current: 7.5µA active and 0.35µA in shutdown mode.
- Compact SOT563 package with a footprint 68% smaller than an SOT-23 package.
- SMBus alert function for temperature threshold alerts.
- Supports up to four devices on one bus.
- NIST-traceable and verified through ISO/IEC 17025 accredited calibrations.
Applications
The TMP102 is designed for extended temperature measurement in various applications, including:
- Communication systems
- Computer systems
- Consumer electronics
- Environmental monitoring
- Industrial automation
- Instrumentation
Q & A
- What is the operating temperature range of the TMP102?
The TMP102 operates over a temperature range of –40°C to 125°C. - What is the accuracy of the TMP102 temperature sensor?
The TMP102 has an accuracy of ±0.5°C from –40°C to 125°C. - What interfaces does the TMP102 support?
The TMP102 supports SMBus, two-wire, and I2C interfaces. - How many devices can be connected on one bus?
Up to four TMP102 devices can be connected on one bus. - What is the quiescent current of the TMP102 in active and shutdown modes?
The quiescent current is 7.5µA in active mode and 0.35µA in shutdown mode. - What is the resolution of the TMP102 temperature sensor?
The resolution is 12 bits, providing a temperature resolution of 0.0625°C. - Is the TMP102 NIST-traceable?
Yes, the TMP102 production units are 100% tested against NIST-traceable sensors and verified through ISO/IEC 17025 accredited calibrations. - What is the package type and size of the TMP102?
The TMP102 comes in a SOT563 package, measuring 1.6mm × 1.6mm. - Does the TMP102 require calibration or external signal conditioning?
No, the TMP102 does not require calibration or external component signal conditioning. - What is the purpose of the SMBus alert function in the TMP102?
The SMBus alert function allows for temperature threshold alerts.
