Overview
The TMP35GT9, produced by Analog Devices Inc., is a low voltage, precision centigrade temperature sensor. It is part of the TMP35/TMP36/TMP37 family, which provides a voltage output that is linearly proportional to the Celsius temperature. The TMP35GT9 is functionally compatible with the LM35/LM45 and is designed for single-supply operation from 2.7 V to 5.5 V. This device is known for its high accuracy, low self-heating, and stable operation with large capacitive loads.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 2.7 to 5.5 | V |
| Output Voltage at 25°C | 250 | mV |
| Output Scale Factor | 10 | mV/°C |
| Temperature Range | 10 to 125 | °C |
| Accuracy over Temperature Range | ±2 | °C |
| Linearity | ±0.5 | °C |
| Quiescent Current | < 50 | µA |
| Shutdown Current | < 0.5 | µA |
| Package Types | 3-lead TO-92, 8-lead SOIC_N, 5-lead SOT-23 |
Key Features
- Low voltage operation (2.7 V to 5.5 V)
- Calibrated directly in °C with a 10 mV/°C scale factor
- High accuracy: ±2°C over the temperature range and ±0.5°C linearity
- Stable with large capacitive loads
- Low self-heating: less than 0.1°C in still air
- Shutdown function to reduce supply current to less than 0.5 µA
- Available in 3-lead TO-92, 8-lead SOIC_N, and 5-lead SOT-23 packages
Applications
- Environmental control systems
- Thermal protection
- Industrial process control
- Fire alarms
- Power system monitors
- CPU thermal management
Q & A
- What is the operating voltage range of the TMP35GT9?
The TMP35GT9 operates from a single supply voltage of 2.7 V to 5.5 V.
- What is the output voltage of the TMP35GT9 at 25°C?
The output voltage at 25°C is 250 mV.
- What is the temperature range of the TMP35GT9?
The TMP35GT9 is specified for temperatures from 10°C to 125°C.
- What is the accuracy of the TMP35GT9 over its temperature range?
The accuracy is ±2°C over the temperature range.
- Does the TMP35GT9 have a shutdown feature?
- What are the available package types for the TMP35GT9?
The TMP35GT9 is available in 3-lead TO-92, 8-lead SOIC_N, and 5-lead SOT-23 packages.
- How much quiescent current does the TMP35GT9 consume?
The quiescent current is less than 50 µA.
- Is the TMP35GT9 suitable for automotive applications?
- What is the linearity of the TMP35GT9?
The linearity is ±0.5°C.
- How does the TMP35GT9 perform with large capacitive loads?
The TMP35GT9 is stable with large capacitive loads and does not oscillate.
