Markets & Applications
Telecommunications
Mobile communications applications require extremely accurate synchronization of the signal frequency throughout the network. Without absolute frequency stability typically within ±0.05 ppm at all points, cut-outs and failed calls will occur. To minimize frequency discrepancies, each timing device within the network is locked to an external reference source, e.g. GPS in the case of CDMA. This imposes two key requirements on each timing device: it must be able to synchronize adequately to the reference clock over its entire lifetime of ten years or more, and it must be able to hold its frequency stable for a period of 24 hours or more in the event of loss of the external reference signal.
TC-OCXO Technology
The world’s first TC-OCXOs (temperature-compensated oven-controlled crystal oscillators) are designed to deliver the high stability of an OCXO from a device with low power consumption, small size and light weight comparable to those of a TCXO. Known as Triton™, it is capable of stabilities better than ±0.05 ppm over operating temperature range, and is aimed at mobile, battery powered and remote applications such as GPS, satellite comms, distress beacons and secure radio.
Pluto™ Temperature Compensation
Temperature is an important factor when specifying the stability of crystal oscillators. By compensating for the effects of temperature on the oscillation frequency of the crystal, a TCXO can exhibit up to 100 times better stability over its operating temperature range than a comparable uncompensated oscillator.