| 摘要 |
PROBLEM TO BE SOLVED: To reduce the current flowing through a crystal resonator in a crystal oscillator circuit. SOLUTION: The current flowing through the crystal resonator is reduced by providing resistances Rd and Rg on one of the paths formed of the output terminal, capacitor element Cd, and power terminal VDD of a CMOS inverter 2 and one of the path formed of the input terminal, capacitor element Cg, and power terminal VDD of the CMOS inverter 2. Specially, the crystal current is reduced and necessary negative resistance is obtained by setting the sum of the values of the resistances Rd and Rg to 10 to 320Ω.
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