Texas Instruments TMP117 Sensor de temperatura digital - Alta precisão, Pacote QFN

High-Precision Digital Temperature Sensor for Industrial and Medical Applications

O TMP117 is a high-accuracy, low-power digital temperature sensor developed by Texas Instruments (TI), designed to meet the stringent requirements of industrial, medical, and environmental monitoring systems. With a precision of ±0.1°C across a wide temperature range, this sensor delivers reliable and repeatable measurements, making it ideal for applications where accuracy is critical. The device integrates a 16-bit analog-to-digital converter (ADC), I²C and SMBus interfaces, and supports programmable alert limits, enabling seamless integration into complex systems.

Engineered for performance and efficiency, this sensor is housed in a compact 6-pin WSON package, making it suitable for space-constrained designs. Its low power consumption and high resolution make it a preferred choice for battery-powered and portable devices. The TMP117 is factory-calibrated, eliminating the need for user calibration and reducing time-to-market for OEMs and system designers.

Why Choose This High-Accuracy Temperature Sensor Over Conventional Alternatives?

Unlike traditional analog temperature sensors or thermistors, this digital sensor offers superior accuracy e long-term stability without the need for external calibration. Many conventional sensors require complex analog front-end circuitry, which increases design complexity and cost. In contrast, this device provides a fully digital output, simplifying system integration and reducing BOM (Bill of Materials) costs.

Its ±0.1°C accuracy over a wide temperature range (-20°C to +50°C) is unmatched by most alternatives in the same category. This level of precision is particularly valuable in medical-grade thermometers, cold chain monitoring, and industrial automation systems where even minor temperature deviations can lead to performance degradation or safety concerns.

Additionally, the sensor’s low power consumption (as low as 3.5 µA average current) makes it ideal for battery-operated systems. The integrated EEPROM allows for user-defined settings and persistent storage, further enhancing its flexibility in embedded applications.

Technical Specifications and Performance Parameters

• Temperature Accuracy: ±0.1°C (–20°C to +50°C)
• Gama de temperaturas de funcionamento: –55°C to +150°C
• Resolution: 0.0078°C (16-bit)
• Interface: I²C and SMBus compatible
• Supply Voltage: 1,8 V a 5,5 V
• Average Current Consumption: 3.5 µA (1-Hz conversion rate)
• Shutdown Current: 150 nA (typical)
• Conversion Time: 15.5 ms (typical)
• Embalagem: 6-pin WSON (2.0 mm × 2.0 mm)
• Alert Function: Programmable temperature limits with interrupt
• EEPROM: 48 bytes user memory
• Factory Calibrated: Sim

Typical Use Cases and Application Areas

This sensor is widely adopted in industries where temperature accuracy e system reliability are paramount. Its robust performance and digital interface make it suitable for a variety of applications:

• Dispositivos médicos: Clinical thermometers, patient monitoring systems
• Automação industrial: Process control, HVAC systems
• Cold Chain Monitoring: Pharmaceutical storage, food transportation
• Eletrónica de consumo: Wearables, smart home devices
• Monitorização ambiental: Weather stations, greenhouse control

Texas Instruments: A Trusted Name in Precision Sensing

Texas Instruments (TI) is a global leader in analog and embedded processing technologies. With decades of experience in sensor design and manufacturing, TI delivers high-performance components that meet the rigorous demands of industrial and medical markets. The company’s commitment to quality and innovation is reflected in the design of this sensor, which combines cutting-edge technology with proven reliability.

Engineers and product developers worldwide trust TI’s sensor solutions for their accuracy, durability, and ease of integration. The TMP117 is a testament to TI’s dedication to enabling smarter, more efficient systems through precision sensing.

Perguntas frequentes (FAQ)

1. What makes this sensor more accurate than other digital temperature sensors?

This sensor offers ±0.1°C accuracy over a wide temperature range, which is significantly better than most digital sensors that typically offer ±0.5°C or worse. It is factory-calibrated, ensuring consistent performance without user calibration.

2. Can this sensor be used in battery-powered applications?

Yes, it is optimized for low power consumption, drawing only 3.5 µA on average at a 1-Hz conversion rate. This makes it ideal for portable and battery-operated devices where energy efficiency is critical.

3. Is the sensor suitable for medical-grade applications?

Absolutely. Its high accuracy and reliability make it suitable for medical devices such as thermometers and patient monitoring systems. It meets the precision requirements needed in healthcare environments.

4. How does the alert function work?

The sensor includes programmable temperature limits that trigger an interrupt when the measured temperature exceeds the set thresholds. This feature is useful for real-time monitoring and system protection.

5. What interface options are available for system integration?

It supports both I²C and SMBus interfaces, allowing easy integration with a wide range of microcontrollers and embedded systems. This flexibility simplifies design and accelerates development time.

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