| Local sensor accuracy (Max) (+/- C) | 1 |
| Operating temperature range (C) | -40 to 125 |
| Supply voltage (Min) (V) | 5 |
| Supply voltage (Max) (V) | 2.99 |
| Supply current (Max) (uA) | 400 |
| Interface type | Analog output |
| Sensor gain (mV/Deg C) | 10 |
| Rating | Catalog |
- Directly Calibrated to the Kelvin Temperature
Scale - 1°C Initial Accuracy Available
- Operates from 400 μA to 5 mA
- Less than 1-Ω Dynamic Impedance
- Easily Calibrated
- Wide Operating Temperature Range
- 200°C Overrange
- Low Cost
The LM135 series are precision, easily-calibrated, integrated circuit temperature sensors. Operating as a 2-terminal zener, the LM135 has a breakdown voltage directly proportional to absolute temperature at 10 mV/°K. With less than 1-Ω dynamic impedance, the device operates over a current range of 400 μA to 5 mA with virtually no change in performance. When calibrated at 25°C, the LM135 has typically less than 1°C error over a 100°C temperature range. Unlike other sensors, the LM135 has a linear output.
Applications for the LM135 include almost any type of temperature sensing over a ?55°C to 150°C temperature range. The low impedance and linear output make interfacing to readout or control circuitry are especially easy.
The LM135 operates over a ?55°C to 150°C temperature range while the LM235 operates over a ?40°C to 125°C temperature range. The LM335 operates from ?40°C to 100°C. The LMx35 devices are available packaged in hermetic TO transistor packages while the LM335 is also available in plastic