Self-adaptive overshoot voltage suppression circuit, reference circuit, chip and communication terminal

Abstract

The invention discloses a self-adaptive overshoot voltage suppression circuit, a reference circuit, a chip and a communication terminal. A module comprises an overshoot voltage suppression unit and a voltage-current conversion unit, the input end of the overshoot voltage suppression unit is connected with a preset sampling node on a reference circuit to be measured, and the output end of the overshoot voltage suppression unit is connected with the input end of the voltage-current conversion unit. And the output end of the voltage-current conversion unit is connected with a preset adjusting node on the reference circuit to be measured. The transient high-frequency induction voltage is generated according to the sampling voltage output by the reference circuit to be measured detected in real time, and the transient high-frequency induction voltage is converted into the corresponding pull-up current, injected into the reference circuit to be measured and superposed with the pull-down starting current of the reference circuit to be measured, so that the nonlinear starting current at the starting moment of the reference circuit to be measured is reduced; it is ensured that the reference circuit meets the time sequence requirement, and meanwhile the overshoot quick response of the reference voltage output by the reference circuit is effectively restrained.

Description

technical field [0001] The invention relates to an adaptive overshoot voltage suppression circuit, and also relates to a reference circuit including the adaptive overshoot voltage suppression circuit, an integrated circuit chip and a corresponding communication terminal, belonging to the technical field of integrated circuits. Background technique [0002] With the continuous advancement of integrated circuit process nodes and the promotion and development of 5G technology, the requirements for timing response of equipment in 5G systems are getting higher and higher, which poses challenges to the response time of each circuit module inside the equipment. Especially in the PA (Power Amplifier, power amplifier) ​​system, not only need to meet the strict response time, but also require that the power supply voltage provided for it should not have a large overshoot. [0003] Usually in the circuit system, in order to obtain a fast system response, the system will generate a larg...

AI Technical Summary

Problems solved by technology

However, this method is more complicated, and at the same time, the hardware overhead is large, the cost is high, and it is easy to be disturbed

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