Overview
The LMT87-Q1, produced by Texas Instruments, is a precision CMOS temperature sensor designed for high accuracy and low power consumption. This device features a linear analog output voltage that is inversely proportional to temperature, making it suitable for a wide range of applications, including automotive, industrial, and battery-powered devices such as drones and sensor nodes. The LMT87-Q1 operates on a 2.7-V supply voltage, has a quiescent current of 5.4 μA, and a power-on time of 0.7 ms, which are critical for minimizing power consumption in battery-powered systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 2.7 | V |
| Quiescent Current | 5.4 - 9 | μA |
| Power-on Time | 0.7 - 1.9 | ms |
| Operating Temperature Range | -50 to 150 | °C |
| Typical Accuracy | ±0.4 | °C |
| Maximum Accuracy | ±2.7 | °C |
| Average Sensor Gain | -13.6 | mV/°C |
| Output Drive Capability | ±50 | μA |
| Output Load Capacitance | 1100 | pF |
| Package Type | SOT-SC70 (DCK) | |
| Pins | 5 |
Key Features
- AEC-Q100 Grade 0 qualified for automotive applications, with an operating temperature range of -40°C to +150°C.
- High accuracy: ±0.4°C typical and ±2.7°C maximum over the full operating temperature range without calibration.
- Low power consumption: 2.7-V supply voltage and 5.4-μA quiescent current.
- Fast power-on time: 0.7 ms.
- Push-pull output with ±50-μA drive capability and short-circuit protection.
- Footprint compatible with industry-standard LM20/19 and LM35 temperature sensors.
- Cost-effective alternative to thermistors).
Applications
- Automotive systems: infotainment, cluster, and powertrain systems).
- Battery-powered devices: drones, sensor nodes, and other low-power applications).
- Industrial temperature sensing: where high accuracy and low power consumption are critical).
Q & A
- What is the operating temperature range of the LMT87-Q1?
The operating temperature range of the LMT87-Q1 is -50°C to 150°C).
- What is the typical accuracy of the LMT87-Q1?
The typical accuracy of the LMT87-Q1 is ±0.4°C).
- What is the maximum accuracy of the LMT87-Q1 over its full operating temperature range?
The maximum accuracy of the LMT87-Q1 over its full operating temperature range is ±2.7°C).
- What is the supply voltage and quiescent current of the LMT87-Q1?
The supply voltage is 2.7 V, and the quiescent current is 5.4 μA).
- How long does it take for the LMT87-Q1 to power on?
The power-on time of the LMT87-Q1 is 0.7 ms).
- Is the LMT87-Q1 qualified for automotive applications?
Yes, the LMT87-Q1 is AEC-Q100 Grade 0 qualified for automotive applications).
- What is the output drive capability of the LMT87-Q1?
The output drive capability of the LMT87-Q1 is ±50 μA).
- Is the LMT87-Q1 footprint compatible with other temperature sensors?
Yes, the LMT87-Q1 is footprint compatible with industry-standard LM20/19 and LM35 temperature sensors).
- What are some common applications of the LMT87-Q1?
- Does the LMT87-Q1 require calibration for its full operating temperature range?
No, the LMT87-Q1 maintains its accuracy over the full operating temperature range without calibration).
