| 摘要 |
An integrated circuit current source includes an oscillator, a capacitor, a capacitor charging circuit and a capacitor discharging circuit, all formed on an integrated circuit substrate. The capacitor, capacitor charging circuit, and capacitor discharging circuit form a switched capacitor circuit having a resistance that varies inversely with the frequency of oscillation of the oscillator. This switched capacitor circuit is included in a bias signal generator that generates a bias signal at a level that varies in accordance with frequency of the oscillating signal. This bias signal is used to control frequency of the oscillator to provide a stable frequency of oscillation and a stable output current.
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