Overview
The LMT01-Q1, produced by Texas Instruments, is a high-accuracy, 2-pin digital output temperature sensor. This device is designed for precision temperature measurement and is particularly suited for onboard and offboard applications in automotive, industrial, and consumer markets. It features a pulse count current loop interface, which simplifies hardware implementation and allows direct interfacing with GPIO or comparator inputs. The LMT01-Q1 achieves a maximum ±0.5°C accuracy over a temperature range of –20°C to 90°C without the need for system calibration or hardware and software compensation.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Temperature Range | –40 | 150 | °C | |
| Accuracy (–20°C to 90°C) | ±0.5 | °C | ||
| Accuracy (90°C to 120°C) | ±0.625 | °C | ||
| Accuracy (–40°C to –20°C) | ±0.625 | °C | ||
| Resolution | 0.0625 | °C | ||
| Voltage Drop (VP – VN) | 2 | 5.5 | V | |
| Conversion Current | 34 | µA | ||
| Conversion Time | 46 | 50 | 54 | ms |
| Output Current Pulse Frequency | 82 | 88 | 94 | kHz |
| Package Options | TO-92/LPG, WSON/DQX |
Key Features
- AEC-Q100 Qualified with temperature grades 0 (E) and 1 (Q)
- High accuracy over a wide temperature range without system calibration or hardware and software compensation
- Pulse count current loop interface for easy integration with MCU, FPGA, or ASIC
- Floating 2-V to 5.5-V supply operation with integrated EMI immunity
- Continuous temperature update every 100 ms
- Multiple package options including TO-92/LPG and WSON/DQX
- High ESD tolerance with HBM and CDM classifications
Applications
- Automotive: Battery Management Systems, Engine Management, and Advanced Driver Assistance Systems (ADAS)
- Digital Output Wired Probes
- Heating, Ventilation, and Air Conditioning (HVAC)
- Power Supplies and Battery Management
Q & A
- What is the temperature accuracy of the LMT01-Q1 over the range of –20°C to 90°C?
The temperature accuracy is ±0.5°C over this range.
- What is the resolution of the temperature measurements provided by the LMT01-Q1?
The resolution is 0.0625°C.
- What are the package options available for the LMT01-Q1?
The device is available in TO-92/LPG and WSON/DQX packages.
- What is the voltage range for the supply operation of the LMT01-Q1?
The device operates with a floating 2-V to 5.5-V supply.
- How often does the LMT01-Q1 provide temperature updates?
The device provides continuous temperature updates every 100 ms.
- Is the LMT01-Q1 suitable for use in noisy environments?
Yes, it has integrated EMI immunity, making it suitable for use in noisy environments.
- What are some common applications of the LMT01-Q1?
Common applications include automotive systems, digital output wired probes, HVAC, and power supplies and battery management.
- What is the conversion time for the LMT01-Q1?
The conversion time is typically 50 ms, ranging from 46 ms to 54 ms.
- Does the LMT01-Q1 require system calibration or hardware and software compensation?
No, it does not require system calibration or hardware and software compensation for its high accuracy.
- What is the output current pulse frequency of the LMT01-Q1?
The output current pulse frequency is between 82 kHz and 94 kHz.
