Overview
The TMP112AQDRLRQ1, produced by Texas Instruments, is a high-accuracy, low-power digital temperature sensor designed for applications requiring precise temperature measurement. This device is particularly suited for replacing NTC/PTC thermistors in various automotive and industrial environments. It offers high accuracy without the need for calibration or external component signal conditioning, making it a reliable choice for thermal management and protection.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (V+) | 1.4 | 3.6 | V | |
| Operating Temperature Range | –40 | 125 | °C | |
| Temperature Accuracy (25°C, V+ = 3.3 V) | ±0.1 | ±0.5 | °C | |
| Temperature Accuracy (0°C to 65°C, V+ = 3.3 V) | ±0.25 | ±0.5 | °C | |
| Temperature Accuracy (–40°C to 125°C, V+ = 3.3 V) | ±0.5 | ±1.0 | °C | |
| Resolution | 12-bit (0.0625°C/LSB) | |||
| Conversion Time (One-shot mode) | 26 | 35 | ms | |
| Quiescent Current | 10 µA | |||
| Package | SOT563 (6-pin) |
Key Features
- High Accuracy: The TMP112AQDRLRQ1 offers an accuracy of ±0.5°C without requiring calibration or external component signal conditioning. User calibration can achieve accuracy as good as ±0.17°C.
- Low Power Consumption: The device operates with a maximum quiescent current of 10 µA over the full operating range.
- Compact Package: The SOT563 package is 68% smaller than an SOT23 package, making it ideal for space-constrained applications.
- Interface Compatibility: Supports SMBus, two-wire, and I2C interfaces, allowing up to four devices on one bus.
- Overtemperature Alert: Features an SMBus alert function for overtemperature conditions.
- Extended Temperature Range: Specified to operate over a temperature range of –40°C to 125°C).
Applications
- Climate Control: Ideal for temperature monitoring in climate control systems).
- Infotainment Processor Management: Used in managing temperature for infotainment systems).
- Airflow Sensors: Suitable for temperature measurement in airflow sensors).
- Battery Control Units: Employed in battery management systems for temperature monitoring).
- Engine Control Units: Used in engine control units for precise temperature measurement).
- UREA Sensors: Applied in UREA sensors for accurate temperature readings).
- Water Pumps and HID Lamps: Used in various automotive and industrial applications requiring precise temperature control).
- Airbag Control Units: Suitable for temperature monitoring in airbag control systems).
Q & A
- What is the operating temperature range of the TMP112AQDRLRQ1?
The TMP112AQDRLRQ1 operates over a temperature range of –40°C to 125°C).
- What is the accuracy of the TMP112AQDRLRQ1 at 25°C?
The device offers an accuracy of ±0.5°C at 25°C without requiring calibration).
- What interfaces does the TMP112AQDRLRQ1 support?
The device supports SMBus, two-wire, and I2C interfaces).
- What is the resolution of the TMP112AQDRLRQ1?
The device has a 12-bit resolution, which translates to 0.0625°C per least significant bit (LSB)).
- How many devices can be connected on one bus?
Up to four devices can be connected on one bus).
- What is the maximum quiescent current of the TMP112AQDRLRQ1?
The maximum quiescent current is 10 µA over the full operating range).
- What package type is the TMP112AQDRLRQ1 available in?
The device is available in the SOT563 (6-pin) package).
- Does the TMP112AQDRLRQ1 have an overtemperature alert feature?
Yes, the device features an SMBus alert function for overtemperature conditions).
- What is the supply voltage range for the TMP112AQDRLRQ1?
The supply voltage range is from 1.4 V to 3.6 V).
- How long does the one-shot mode conversion take?
The one-shot mode conversion time is between 26 ms and 35 ms).
