Double-emitter clock oscillator and mobile terminal

Abstract

The invention discloses a dual-emitter clock oscillator and a mobile terminal, and belongs to the field of clock oscillators. The double-emitter clock oscillator comprises a double-emitter clock circuit. The double-emitter clock circuit comprises two triodes, a capacitor and two first constant current sources. Wherein the emitter of each triode is connected with a first constant current source and then is grounded; a collector electrode of each triode is connected to a reference voltage end through a divider resistor, and a base electrode of each triode is connected to a voltage end; two ends of the capacitor are respectively connected to emitting electrodes of the two triodes; and the triodes are turned on in turn to realize charging and discharging of the capacitor so as to realize fixed output of oscillation frequency of the capacitor. Therefore, the dual-emitter clock circuit is very good in stability and can stably provide clock output, more frequency output can be obtained by adjusting devices according to needs, adjustment of various frequencies is achieved, and the requirements of most circuit designs can be met.

Description

technical field [0001] The invention relates to the field of clock oscillators, in particular to a double emitter clock oscillator and a mobile terminal. Background technique [0002] At present, in the design of electronic circuits, the clock oscillator circuit plays the role of the basic functional module, and its design will affect the performance of the entire system circuit. The better the stability of the clock circuit, the better the system performance, so designers The design of the clock circuit is one of the highest design priorities, and the module area design will be formed separately. Especially for the design of smart mobile terminals, the application of clock oscillation circuits, especially in digital circuits, is more frequent and important. [0003] At present, the general clock oscillation circuit uses crystal oscillator devices such as quartz crystals to form a clock with a certain frequency. Although this method can control the cost well, its biggest di...

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a dual-emitter clock oscillator and a mobile terminal, aiming to solve the problem that the current clock oscillation circuit cannot adjust the frequency in real time according to the needs, and it is difficult to achieve the optimal frequency in the anti-jamming environment. problem of effect

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