Overview
The LMT70AYFQR is a high-precision analog output temperature sensor produced by Texas Instruments. It is designed to offer accurate temperature measurements over a wide temperature range, making it suitable for various applications that require high precision and low power consumption. The sensor features an output enable pin, allowing multiple LMT70s to share a single ADC channel, which simplifies system design and reduces overall system cost. Its ultra-small 0.88 mm x 0.88 mm 4-bump WLCSP (DSBGA) package makes it ideal for space-constrained designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature Range | -55 to 150 | °C |
| Accuracy | ±0.05°C (typ) or ±0.13°C (max) from 20°C to 42°C ±0.2°C (max) from -20°C to 90°C ±0.23°C (max) from 90°C to 110°C ±0.36°C (max) from -55°C to 150°C | °C |
| Matching Accuracy for Adjacent Units | 0.1°C (max) at 30°C | °C |
| Supply Voltage | 2.0 to 5.5 | V |
| Supply Current | 9.2 µA (typ), 12 µA (max) | µA |
| Output Slope | -5.19 mV/°C | mV/°C |
| Output Impedance | 28 to 80 Ω | Ω |
| Package Type | 4-DSBGA (WLCSP) | |
| Package Size | 0.88 mm x 0.88 mm | mm |
Key Features
- Wide Temperature Range: The LMT70AYFQR operates over a wide temperature range of -55°C to 150°C, making it versatile for various applications.
- High Precision: Offers high accuracy with ±0.05°C (typ) or ±0.13°C (max) from 20°C to 42°C and up to ±0.36°C (max) from -55°C to 150°C.
- Low Power Consumption: Consumes very low power, with a supply current of 9.2 µA (typ) and 12 µA (max), suitable for battery-powered devices.
- Output Enable Pin: Allows multiple LMT70s to share one ADC channel, simplifying system design and reducing overall system cost.
- Linear Analog Output: Features a very linear analog temperature sensor output with an NTC output slope of -5.19 mV/°C.
- Ultra-Small Package: Comes in an ultra-small 0.88 mm x 0.88 mm 4-bump WLCSP (DSBGA) package, ideal for space-constrained designs.
Applications
- Internet of Things (IoT) Sensor Nodes: Ideal for IoT applications requiring high precision and low power consumption.
- Medical Thermometers and Equipment: Suitable for medical applications such as thermometers and fitness equipment due to its high accuracy and reliability.
- Industrial Control Systems: Can replace RTD and precision NTC/PTC thermistors in industrial settings, offering better accuracy and lower power consumption.
- Automotive Applications: Used in automotive systems where precise temperature monitoring is critical.
- Consumer Electronics: Applicable in various consumer electronics where temperature sensing is required.
- Battery-Powered Devices: Ideal for battery-powered devices due to its low power consumption.
Q & A
- What is the operating temperature range of the LMT70AYFQR?
The LMT70AYFQR operates over a temperature range of -55°C to 150°C.
- What is the typical accuracy of the LMT70AYFQR?
The typical accuracy is ±0.05°C from 20°C to 42°C, with maximum accuracy varying by temperature range.
- What is the supply voltage range for the LMT70AYFQR?
The supply voltage range is from 2.0 V to 5.5 V.
- How much current does the LMT70AYFQR typically consume?
The LMT70AYFQR typically consumes 9.2 µA of supply current, with a maximum of 12 µA.
- What is the output slope of the LMT70AYFQR?
The output slope is -5.19 mV/°C.
- What is the package type and size of the LMT70AYFQR?
The LMT70AYFQR comes in a 4-bump WLCSP (DSBGA) package, measuring 0.88 mm x 0.88 mm.
- Can multiple LMT70AYFQR sensors share an ADC channel?
- What are some common applications of the LMT70AYFQR?
- Is the LMT70AYFQR suitable for battery-powered devices?
- What is the matching accuracy for adjacent LMT70A units?
