April, 2, 2009
Murata Manufacturing Co., Ltd.
President/ Statutory Representative Director: Tsuneo Murata
Murata Manufacturing Co., Ltd. has commercialized and commenced mass production of “Hybrid Crystal Resonator,” quartz crystal unit, jointly developed with Tokyo Denpa Co., Ltd. (hereinafter “Tokyo Denpa”) .
In 1977, Murata developed “CERALOCK®,” now widely used in various equipment for the purpose of resonating CPU clock signals*1.
Resonator devices*2 include ceramic resonators and quartz crystal units. Ceramic resonators are small and inexpensive, while quartz crystal units are expensive and high-precision. In most cases, consumer products tend to incorporate ceramic resonators.
However, as SATA*3 and USB accelerated the transfer speed for the PC interface, resonators used for HDDs began to require higher precision.
We have combined Tokyo Denpa’s high quality quartz crystal element technology and our excellent production technology to jointly develop quartz crystal units “Hybrid Crystal Resonators” as a timing device responding to the market demands.
In addition to our ceramic resonator’s stronghold in automotive and consumer applications, we can now aim at expanding our share in the HDD market where relatively high precision is required.
| *1 Clock signal | Signal source that regulates operations of various LSIs |
| *2 Resonator device | One of the timing devices. Ceramic resonators utilize ceramic piezoelectric properties, while quartz crystal units utilize quartz piezoelectric properties. |
| *3 SATA | One of the extended specifications for IDE (ATA) standards used in the connection between computers and storage devices such as HDDs |
XRCGA series
Used for storage devices such as HDDs and ODDs. USB2.0 High Speed specification compliant
| Nominal frequency | 24 to 48 MHz |
| Initial frequency deviation | ±100 ppm |
| Temperature characteristics | ±50 ppm |
| Operational temperature range | -30 to 85ﾟC |
Temperature characteristics of XRCGA30M000*
in April 2009
20 Yen/per unit
2 patents pending
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