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Temperature__compensated_crystal_oscillator_TCXO

2016-08-02 00:55  
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Temperature__compensated_crystal_oscillator_TCXO
This circuit shows a temperature-controlled crystal oscillator without an expensive, power-consuming oven. Instead, the crystal frequency is controlled by an MV-209 varactor. In turn, the MV209 is controlled by a linear thermistor in the feedback loop of A1. Linear Technology Corporaton. Linear Appications Handbook, 1990, p. AN12-4.