Overview
The TMP121AIDBVRG4, produced by Texas Instruments, is a highly accurate digital temperature sensor. This device is part of the TMP121 and TMP123 series, known for their SPI-compatible interface and high precision temperature measurement capabilities. The TMP121AIDBVRG4 is packaged in a tiny SOT23-6 package, making it ideal for space-constrained applications. It requires no external components for operation and is designed for low-power consumption, making it suitable for a wide range of thermal management and thermal protection applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Temperature Range | −40 | +125 | °C | |
| Accuracy (−25°C to +85°C) | ±0.5 | ±1.5 | °C | |
| Resolution | ±0.0625 | °C | ||
| Supply Voltage Range | 2.7 | 5.5 | V | |
| Quiescent Current | 35 | 50 | µA | |
| Shutdown Current | 0.1 | 1 | µA | |
| Conversion Time | 240 | 320 | ms | |
| Conversion Period | 480 | 640 | ms | |
| Package Type | SOT23-6 |
Key Features
- SPI-Compatible Interface: The TMP121AIDBVRG4 communicates through an SPI-compatible serial interface, allowing for easy integration into various systems.
- High Accuracy: The device offers high accuracy with a temperature error of ±1.5°C from −25°C to +85°C.
- Low Power Consumption: It features a low quiescent current of 50µA and a shutdown current of 1µA, making it suitable for low-power applications.
- Wide Supply Range: The device operates over a supply voltage range of 2.7V to 5.5V.
- Compact Package: The SOT23-6 package is tiny, making it ideal for space-constrained applications.
- No External Components Required: The TMP121AIDBVRG4 does not require any external components for operation, though a 0.1µF supply bypass capacitor is recommended.
Applications
- Power Supply Temperature Monitoring: Ideal for monitoring temperatures in power supply units.
- Computer Peripheral Thermal Protection: Used in thermal protection systems for computer peripherals.
- Notebook Computers: Suitable for temperature monitoring in notebook computers.
- Cell Phones: Used in mobile devices for thermal management.
- Battery Management: Applied in battery management systems to monitor temperature.
- Office Machines: Used in various office equipment for thermal monitoring and protection.
Q & A
- What is the temperature accuracy of the TMP121AIDBVRG4?
The temperature accuracy of the TMP121AIDBVRG4 is ±1.5°C from −25°C to +85°C.
- What is the resolution of the temperature measurements?
The resolution is ±0.0625°C.
- What is the supply voltage range for the TMP121AIDBVRG4?
The supply voltage range is from 2.7V to 5.5V.
- How much quiescent current does the TMP121AIDBVRG4 consume?
The quiescent current is 50µA.
- What is the conversion time for the TMP121AIDBVRG4?
The conversion time is between 240ms and 320ms.
- Does the TMP121AIDBVRG4 require any external components?
No, it does not require any external components, though a 0.1µF supply bypass capacitor is recommended.
- What is the package type of the TMP121AIDBVRG4?
The package type is SOT23-6.
- What are some common applications of the TMP121AIDBVRG4?
Common applications include power supply temperature monitoring, computer peripheral thermal protection, notebook computers, cell phones, battery management, and office machines.
- How does the TMP121AIDBVRG4 communicate with other devices?
The TMP121AIDBVRG4 communicates through an SPI-compatible serial interface.
- What is the shutdown current of the TMP121AIDBVRG4?
The shutdown current is 1µA.
