Overview
The LMT01LPG device from Texas Instruments is a high-accuracy, 2-pin temperature sensor designed with an easy-to-use pulse count current loop interface. This sensor is highly suitable for both onboard and offboard applications in various markets, including automotive, industrial, and consumer sectors. The LMT01LPG offers precision digital temperature measurement with a wide temperature range of –50°C to 150°C, making it an ideal replacement for traditional PTC or NTC thermistors. Its simplicity and high accuracy enable seamless integration with any microcontroller (MCU) without the need for system calibration or hardware and software compensation.
Key Specifications
| Parameter | Value |
|---|---|
| Package | TO-92 (LPG), 2 pins |
| Operating Temperature Range | –50°C to 150°C |
| Accuracy | –20°C to 90°C: ±0.5°C (Maximum) 90°C to 150°C: ±0.625°C (Maximum) –50°C to –20°C: ±0.7°C (Maximum) |
| Resolution | 0.0625°C |
| Communication Frequency | 88 kHz |
| Conversion Current | 34 µA |
| Continuous Conversion Plus Data-Transmission Period | 100 ms |
| Supply Operation | Floating 2 V to 5.5 V (VP–VN) with Integrated EMI Immunity |
| Package Size | 3.1 mm × 4 mm × 1.5 mm |
Key Features
- High accuracy over a wide temperature range of –50°C to 150°C
- Precision digital temperature measurement simplified in a 2-pin package
- Pulse count current loop output easily read by a processor with 0.0625°C resolution
- Single-wire interface designed to directly interface with a GPIO or comparator input
- Integrated EMI suppression and simple 2-pin architecture
- Floating 2 V to 5.5 V supply operation
- Multiple 2-pin package offerings, including TO-92/LPG
Applications
- Digital output wired probes
- White goods
- HVAC (Heating, Ventilation, and Air Conditioning)
- Power supplies
- Industrial Internet of Things (IoT)
- Automotive
- Battery management
Q & A
- What is the operating temperature range of the LMT01LPG?
The operating temperature range is –50°C to 150°C. - What is the accuracy of the LMT01LPG temperature sensor?
The accuracy is ±0.5°C from –20°C to 90°C, ±0.625°C from 90°C to 150°C, and ±0.7°C from –50°C to –20°C. - What is the resolution of the temperature measurements?
The resolution is 0.0625°C. - How does the LMT01LPG communicate with a processor?
The LMT01LPG uses a pulse count current loop interface that is easily read by a processor. - What is the communication frequency of the LMT01LPG?
The communication frequency is 88 kHz. - What is the conversion current of the LMT01LPG?
The conversion current is 34 µA. - How long does the continuous conversion plus data-transmission period take?
The period is 100 ms. - What is the supply voltage range for the LMT01LPG?
The supply voltage range is floating 2 V to 5.5 V (VP–VN) with integrated EMI immunity. - Can the LMT01LPG be used in noisy environments?
Yes, the LMT01LPG has integrated EMI suppression, making it suitable for use in noisy environments. - What are some common applications of the LMT01LPG?
Common applications include digital output wired probes, white goods, HVAC, power supplies, industrial IoT, automotive, and battery management.
