| 摘要 |
PROBLEM TO BE SOLVED: To provide a temperature control circuit, an oven-controlled piezoelectric oscillator and a temperature control method that compactly reduce a deviation of temperature with ease.SOLUTION: In a module including a semiconductor integrated circuit IC and a vibrator SS whose frequency varies with temperature in the same package PKG, the semiconductor integrated circuit IC includes: a heating circuit H; at least one temperature detection circuit TS; a control circuit CC for controlling a heating value of the heating circuit H on the basis of temperature data detected by the temperature detection circuit TS and a heat conduction characteristic between each of the package PKG, the vibrator SS and the semiconductor integrated circuit IC and the temperature detection circuit TS; an oscillation circuit OSC for causing the vibrator SS to oscillate; and an oscillation signal output circuit FO for outputting a desired waveform and amplitude level in response to a signal of the oscillation circuit OSC. The module can thus be kept at a constant temperature irrespective of the ambient temperature to keep the oscillation frequency of the vibrator SS constant. |
