Technical Paper: Pluto -- A Novel 4th-Order Temperature Compensation ASIC Brings Stratum 3 Frequency Stability Within a Miniature SMD

Temperature is an important factor in determining the stability of crystal oscillators. By compensating for the effects of temperature on the oscillation frequency of the crystal, a TCXO (temperature compensated crystal oscillator) can exhibit up to 50 times better stability over its operating temperature range than a comparable uncompensated oscillator. For example, whereas an uncompensated device might offer ±20 ppm stability over the temperature range from –40° to +85°C, a TCXO of otherwise equivalent specifications might be stable to within ±0.4 ppm over the same temperature range.

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