Overview
The TMP122AIDBVR is a digital temperature sensor produced by Texas Instruments. It is designed to provide accurate temperature measurements with a high degree of precision and versatility. Available in a SOT-23-6 package, this sensor is ideal for various applications requiring low-power and reliable temperature monitoring.
Key Specifications
| Parameter | Condition | Min | Max | Units | |
|---|---|---|---|---|---|
| Temperature Range | -40 | 125 | °C | ||
| Accuracy (Temperature Error) | -25°C to +85°C | ±0.5 | ±1.5 | ±1.5 | °C |
| -40°C to +125°C | ±1.0 | ±2.0 | ±2.0 | °C | |
| Supply Voltage | 2.7 | 5.5 | V | ||
| Resolution | 9 to 12 bits + sign | ||||
| Conversion Time | 9 bits | 30 ms | ms | ||
| 10 bits | 60 ms | ms | |||
| 11 bits | 120 ms | ms | |||
| 12 bits | 240 ms | ms | |||
| Input Logic Levels (VIH) | 0.7(V+) | V | |||
| Input Logic Levels (VIL) | 0.3(V+) | V | |||
| Output Logic Levels (VOL SO/I) | ISINK = 3mA | 0.4 | V | ||
| Output Logic Levels (VOH SO/I) | ISOURCE = 2mA | (V+)-0.4 | V |
Key Features
- SPI-Compatible Interface: The TMP122AIDBVR features a digital output with an SPI-compatible interface, enabling easy communication with microcontrollers and other devices.
- Programmable Resolution: The sensor offers programmable resolution from 9 to 12 bits plus sign, allowing users to balance between accuracy and conversion time.
- High Accuracy: It provides temperature accuracy of ±1.5°C from -25°C to +85°C and ±2.0°C from -40°C to +125°C.
- Low Power Consumption: With a supply current range and a shutdown function, it is suitable for low-power applications.
- Alert Function: The sensor includes an ALERT pin that becomes active when the temperature equals or exceeds the set high or low thresholds, supporting various operational modes such as Comparator, Interrupt, and Interrupt/Comparator modes.
- Flexible Operational Modes: Users can configure the sensor for different modes of operation, including Comparator, Interrupt, and Interrupt/Comparator modes.
Applications
The TMP122AIDBVR is versatile and can be used in a variety of applications, including:
- Communication devices
- Computer systems
- Consumer electronics
- Environmental monitoring
- Industrial automation
- Instrumentation
Q & A
- What is the temperature range of the TMP122AIDBVR?
The TMP122AIDBVR can measure temperatures from -40°C to +125°C. - What is the accuracy of the TMP122AIDBVR?
The accuracy is ±1.5°C from -25°C to +85°C and ±2.0°C from -40°C to +125°C. - What are the available resolutions for the TMP122AIDBVR?
The sensor offers programmable resolution from 9 to 12 bits plus sign. - What is the supply voltage range for the TMP122AIDBVR?
The supply voltage range is from 2.7V to 5.5V. - Does the TMP122AIDBVR support any alert functions?
Yes, it includes an ALERT pin that becomes active based on set high or low temperature thresholds. - What are the different operational modes of the TMP122AIDBVR?
The sensor supports Comparator, Interrupt, and Interrupt/Comparator modes. - How does the TMP122AIDBVR communicate with other devices?
The TMP122AIDBVR uses an SPI-compatible interface for communication. - What is the typical conversion time for the TMP122AIDBVR?
The conversion time varies from 30 ms for 9-bit resolution to 240 ms for 12-bit resolution. - Is the TMP122AIDBVR suitable for low-power applications?
Yes, it has low supply current and a shutdown function, making it suitable for low-power applications. - What package type is the TMP122AIDBVR available in?
The TMP122AIDBVR is available in a SOT-23-6 package.
