A fast-start low-power crystal oscillator circuit

Abstract

The invention discloses a quick-start low-power crystal oscillator circuit, which includes a crystal oscillator, an input module, a feedback module, a wave detection module, an acceleration module, a bias module and an output module. The crystal oscillator is connected to the input module, and the input module is connected to the input module. The feedback module is connected to the detection module, the detection module is connected to the acceleration module, the detection module is connected to the output module, the acceleration module is connected to the bias module, and the output terminal of the bias module is connected to the The input terminal of the output module is connected, the output module is connected with the crystal oscillator, and the bias module is connected with the input terminal of the input module. The circuit structure of the present invention is simple; adding a detection module and an acceleration module enables the circuit to vibrate quickly; the present invention has small normal operating current and low power consumption; and can also save external suspension compensation capacitors. The invention can be widely used in the field of crystal oscillators as a fast-start low-power crystal oscillator circuit.

Description

technical field [0001] The invention relates to the field of crystal oscillator clocks, in particular to a fast-start low-power crystal oscillator circuit. Background technique [0002] The traditional low-speed crystal oscillator circuit has a simple circuit structure and low power consumption, but the start-up time of the crystal oscillator is generally longer, usually between a few milliseconds and more than ten milliseconds; in existing circuit applications, the system is required to be able to start quickly, in order to achieve fast The effect of oscillation is to use an amplifier with a large power consumption, which increases the power consumption of the circuit; and the structure of the crystal oscillator circuit is complex. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the object of the present invention is to provide a crystal oscillator circuit with fast start-up and low power consumption. [0004] The technical so...

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Problems solved by technology

[0002] The traditional low-speed crystal oscillator circuit has a simple circuit structure and low power consumption, but the start-up time of the crystal oscillator is generally relatively long, generally between a few milliseconds to more than ten milliseconds; in existing circuit applications, the system is required to be able to start quickly, in order to achieve fast The effect of oscillation, the use of amplifiers with large power consumption increases the power consumption of the circuit; and the structure of the crystal oscillator circuit is complex

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