1. Frequency Stabilization and Signal Generation
Ceramic resonators utilize the mechanical vibration properties of piezoelectric ceramic materials (such as PZT and lead zirconate titanate) to convert electrical energy into fixed-frequency mechanical oscillations, which are then fed back as electrical signals. Their typical frequency range is 1 MHz to 40 MHz (see Murata datasheet), with an accuracy of ±0.5%, making them suitable for circuits with less stringent timing requirements.
2. Cost and Size Advantages
Compared to quartz crystal resonators, ceramic resonators are 30%-50% cheaper (data source: TDK industry report) and can be as small as 2.0 × 1.6 mm (such as the Murata CSTCR series), making them suitable for space-constrained portable devices such as TWS earphones and smart wristbands.