Tem
The CMOS oscillator illustrated in the figure has a frequency that depends on the temperature sensor, a NTC of nominal value (at room temperature) between 20 k ohms and 1 M ohms. The 1 nF to 1 µF C capacitor determines the frequency at room temperature and the frequency range that will be scanned when the sensor changes its temperature. For a 20k ohms sensor and a 1 nF capacitor, the frequency at room temperature will be in the order of 1 MHz, which is the maximum recommended value for the application.
