Overview
The TMP123AIDBVRG4, 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 in temperature measurement. The TMP123AIDBVRG4 is packaged in a tiny SOT23-6 package, making it ideal for space-constrained applications. It requires no external components for operation and features a low quiescent current, making it suitable for low-power applications.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Temperature Range | −40 | +125 | °C | |
| Accuracy (temperature error) | ±0.5 | ±1.5 | °C (−25°C to +85°C) | |
| Resolution | 0.0625 | °C | ||
| Supply Voltage Range | 2.7 | 5.5 | V | |
| Quiescent Current | 35 | 50 | µA | |
| Shutdown Current | 0.1 | 3 | µA | |
| Conversion Time | 240 | 320 | ms | |
| Conversion Period | 480 | 640 | ms | |
| Thermal Resistance (JA) | 200 | °C/W |
Key Features
- SPI-compatible interface for easy communication.
- High accuracy: ±1.5°C from −25°C to +85°C.
- Low quiescent current: 50µA (max) during active conversion and 1µA (max) in shutdown mode.
- Wide supply voltage range: 2.7V to 5.5V.
- Compact SOT23-6 package.
- Operation up to 150°C.
- No external components required for operation.
- Hardware shutdown for additional power savings.
Applications
- Power supply temperature monitoring.
- Computer peripheral thermal protection.
- Notebook computers.
- Cell phones.
- Battery management systems.
- Office machines.
Q & A
- What is the temperature accuracy of the TMP123AIDBVRG4?
The TMP123AIDBVRG4 has a temperature accuracy of ±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 TMP123AIDBVRG4?
The supply voltage range is from 2.7V to 5.5V.
- How much quiescent current does the TMP123AIDBVRG4 consume?
The quiescent current is 50µA (max) during active conversion and 1µA (max) in shutdown mode.
- What is the package type of the TMP123AIDBVRG4?
The package type is SOT23-6.
- Does the TMP123AIDBVRG4 require any external components for operation?
No, it does not require any external components for operation, though a 0.1µF supply bypass capacitor is recommended.
- What is the maximum operating temperature of the TMP123AIDBVRG4?
The maximum operating temperature is up to 150°C.
- How does the TMP123AIDBVRG4 communicate with other devices?
The TMP123AIDBVRG4 communicates through an SPI-compatible serial interface.
- What are some typical applications of the TMP123AIDBVRG4?
Typical applications include power supply temperature monitoring, computer peripheral thermal protection, notebook computers, cell phones, battery management systems, and office machines.
- How long does it take for the TMP123AIDBVRG4 to complete a temperature conversion?
The conversion time is typically 240-320 ms, with a conversion period of 480-640 ms.
