Overview
The TMP102-Q1, produced by Texas Instruments, is a low-power digital temperature sensor designed for high accuracy and reliability. This device is ideal for replacing NTC and PTC thermistors in various applications where precise temperature measurement is crucial. It operates over a wide temperature range of –40°C to 125°C and offers an accuracy of ±0.5°C without the need for calibration or external component signal conditioning. The TMP102-Q1 features a compact SOT563 package, which is 68% smaller than the SOT23 package, making it suitable for space-constrained designs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 1.4 | 3.3 | 3.6 | V |
| Operating Temperature | –40 | 125 | °C | |
| Accuracy (–25°C to 85°C) | ±0.5 | ±2 | °C | |
| Accuracy (–40°C to 125°C) | ±1 | ±3 | °C | |
| Resolution | 0.0625 | °C | ||
| Quiescent Current (Serial Bus Inactive) | 7 | 10 | μA | |
| Quiescent Current (Serial Bus Active, SCL = 400 kHz) | 15 | μA | ||
| Quiescent Current (Serial Bus Active, SCL = 3.4 MHz) | 85 | μA | ||
| ESD Rating (Human Body Model) | ±2000 | V | ||
| ESD Rating (Charged Device Model) | ±1000 | V |
Key Features
- High accuracy: ±0.5°C over the range of –25°C to 85°C and ±1°C over the range of –40°C to 125°C.
- Compact SOT563 package: 1.6-mm × 1.2-mm footprint, 68% smaller than SOT23.
- Low power consumption: Average quiescent current of 7 μA to 10 μA in serial bus inactive mode.
- Multi-interface compatibility: Supports SMBus, two-wire, and I2C interfaces.
- Alert function: Supports SMBus alert function for interrupt mode operation.
- High-speed mode: Supports bus frequencies up to 2.85 MHz.
- Multiple device addressing: Allows up to four devices on a single bus using an address pin.
Applications
The TMP102-Q1 is designed for a variety of applications, including:
- Communication systems
- Computer systems
- Consumer electronics
- Environmental monitoring
- Industrial automation
- Instrumentation
Its high accuracy, low power consumption, and compact size make it an ideal choice for thermal management and thermal protection in these fields.
Q & A
- What is the operating temperature range of the TMP102-Q1?
The TMP102-Q1 operates over a temperature range of –40°C to 125°C. - What is the accuracy of the TMP102-Q1?
The accuracy is ±0.5°C over the range of –25°C to 85°C and ±1°C over the range of –40°C to 125°C. - What interfaces does the TMP102-Q1 support?
The TMP102-Q1 supports SMBus, two-wire, and I2C interfaces. - How many devices can be addressed on a single bus?
Up to four devices can be addressed on a single bus using the address pin. - What is the quiescent current of the TMP102-Q1 in serial bus inactive mode?
The average quiescent current is 7 μA to 10 μA in serial bus inactive mode. - Does the TMP102-Q1 support high-speed mode?
Yes, it supports bus frequencies up to 2.85 MHz in high-speed mode. - What is the resolution of the temperature measurement?
The resolution is 0.0625°C. - Is the TMP102-Q1 ESD protected?
Yes, it has ESD ratings of ±2000 V for the human body model and ±1000 V for the charged device model. - What package type does the TMP102-Q1 use?
The TMP102-Q1 uses a SOT563 package. - Does the TMP102-Q1 have an alert function?
Yes, it supports the SMBus alert function for interrupt mode operation.
