Adaptive overshoot voltage suppression circuit, reference circuit, chip and communication terminal

Abstract

The invention discloses an adaptive overshoot voltage suppression circuit, a reference circuit, a chip and a communication terminal. The module includes an overshoot voltage suppression unit and a voltage-current conversion unit. The input terminal of the overshoot voltage suppression unit is connected to the preset sampling node on the reference circuit to be tested, and the output terminal of the overshoot voltage suppression unit is connected to the voltage-current conversion unit. The input end of the voltage-current conversion unit is connected to a preset adjustment node on the reference circuit to be tested. According to the sampling voltage output by the reference circuit to be tested and detected in real time, the present invention generates a transient high-frequency induced voltage, converts it into a corresponding pull-up current, injects it into the reference circuit to be tested, and is compared with the pull-down start-up current of the reference circuit to be tested. superimposed to reduce the non-linear start-up current at the start-up moment of the reference circuit to be tested, so as to ensure that the reference circuit meets the timing requirements and at the same time effectively suppress the reference voltage overshoot rapid response of the reference circuit output.

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...

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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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