Sound meter is a sound meter resonator and sound meter filter (usually referred to as SAW) the main function principle is to use the piezoelectric characteristics of piezoelectric materials, the use of input and output Transducer (Transducer) the radio wave input signal into mechanical energy, after processing, and then the mechanical energy into electrical signals, to filter unnecessary signals and noise, improve the quality of receiving Goal. Sound meter resonators and sound meter filters are widely used to replace LC resonant circuits in various wireless communication systems, mobile phones, television sets, remote controls and receivers of the global Beidou satellite positioning system.
Crystal oscillator is the abbreviation of crystal resonator and crystal oscillator, crystal oscillator is made of quartz material quartz crystal resonator, plays the role of generating frequency, has stable, good anti-interference performance, widely used in a variety of electronic products.
There are three main differences:
1. Frequency difference, the general crystal frequency is below 150MHZ, most of them are below 100MHZ, the sound meter frequency is above 100MHZ, most of them are above 300MHZ.
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2. Package difference, crystal oscillator package plug-in mainly HC49S, JU2*6, JU3*8, patch mainly SMD2520,SMD3225, SMD5032. The sound meter plug-in package is TO39,F-11, D-11, and the patch package is mainly SMD2016, SMD3030,SMD5050,SMD7234.
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3. The function is different, the sound meter is used for communication and transmission and reception modules, and the crystal vibration is more widely used.
Summary: When the customer tells you that the frequency is more than 300MHZ, then it needs the sound meter, if the customer tells you that the T039 package is also on behalf of the customer needs the sound meter, and also tells you that below 100MHZ, the customer needs the crystal oscillator.
COCKEY Technology, a professional frequency device solution provider, has been committed to the production and sales of industrial crystal and sound meters for more than 10 years, providing customers with sound meters and crystal sample support. COCKEY launched in 2020 2016 package sound meter, small size, cheap price, more stable. At present, the output has reached 3 million pieces per month.