Overview
The LMT86-Q1, produced by Texas Instruments, is a precision CMOS temperature sensor designed for a wide range of applications, particularly in automotive and industrial settings. This device is AEC-Q100 Grade 0 qualified, ensuring it meets stringent automotive standards with an operating temperature range of –50°C to +150°C. It features a linear analog output voltage that is inversely proportional to temperature, making it highly accurate with a typical accuracy of ±0.4°C and a maximum accuracy of ±2.7°C over the full operating range. The LMT86-Q1 operates on a low 2.2-V supply voltage and consumes a minimal 5.4-µA quiescent current, making it suitable for battery-powered devices and power-sensitive applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Temperature Range | –50 | 150 | °C | |
| Supply Voltage (VDD) | 2.2 | 5.5 | V | |
| Quiescent Current (IS) | 5.4 | 9 | µA | |
| Sensor Gain | –10.9 | mV/°C | ||
| Output Drive Capability | ±50 | µA | ||
| Power-on Time | 0.7 | 1.9 | ms | |
| Output Load Capacitance (CL) | 1100 | pF | ||
| Junction-to-Ambient Thermal Resistance (RθJA) | 275 | °C/W |
Key Features
- AEC-Q100 Grade 0 Qualified: Suitable for automotive applications with an operating temperature range of –40°C to +150°C.
- High Accuracy: Typical accuracy of ±0.4°C and maximum accuracy of ±2.7°C over the full operating range.
- Low Power Operation: Operates on a 2.2-V supply voltage with a quiescent current of 5.4 µA.
- Linear Analog Output: Output voltage is inversely proportional to temperature with an average sensor gain of –10.9 mV/°C.
- Short-Circuit Protected Output: Ensures robust operation in various environments.
- Push-Pull Output: Capable of sourcing and sinking up to ±50 µA, ideal for driving dynamic loads.
- Compact Package: Available in a small SC70 package, footprint compatible with industry-standard LM20/19 and LM35 temperature sensors.
- Cost-Effective Alternative to Thermistors: Offers a more accurate and reliable solution compared to thermistors.
Applications
- Automotive: Infotainment and cluster systems, powertrain systems.
- Industrial: General temperature sensing, battery management, and white goods.
- Consumer Electronics: Appliances, drones, wireless transceivers, and cell phones.
- Other Applications: Smoke and heat detectors, disk drives, and gaming devices.
Q & A
- What is the operating temperature range of the LMT86-Q1?
The LMT86-Q1 operates over a temperature range of –50°C to +150°C.
- What is the typical accuracy of the LMT86-Q1?
The typical accuracy is ±0.4°C, with a maximum accuracy of ±2.7°C over the full operating range.
- What is the supply voltage range for the LMT86-Q1?
The device operates on a supply voltage range of 2.2 V to 5.5 V.
- What is the quiescent current of the LMT86-Q1?
The quiescent current is typically 5.4 µA.
- Is the LMT86-Q1 suitable for automotive applications?
Yes, it is AEC-Q100 Grade 0 qualified, making it suitable for automotive applications.
- What is the output drive capability of the LMT86-Q1?
The output can source and sink up to ±50 µA.
- How does the LMT86-Q1 handle capacitive loads?
The device can handle capacitive loads up to 1100 pF without additional components; for loads greater than 1100 pF, a series resistor may be required.
- What is the thermal resistance of the LMT86-Q1?
The junction-to-ambient thermal resistance (RθJA) is 275 °C/W.
- Is the output of the LMT86-Q1 short-circuit protected?
Yes, the output is short-circuit protected.
- What package is the LMT86-Q1 available in?
The device is available in a small SC70 package.
