Correction circuit, delay circuit and annular oscillator circuit

Abstract

A correction circuit for generating a control signal for correcting a characteristic change of a first transistor includes a control signal adjusting section including a constant voltage reduction element for determining either one of a maximum voltage and a minimum voltage of the control signal and a second transistor for determining a characteristic of the control signal, a gate electrode of the second transistor receiving a prescribed voltage; and a resistor section including two types of resistor elements having resistance values of different temperature dependency characteristics from each other, the resistor elements being connected in series. The constant voltage reduction element, the second transistor, and the resistor section are connected in series between a supply terminal and a ground terminal. The control signal is output from a connection point between the control signal adjusting section and the resistor section.

Description

technical field [0001] The present invention relates to a correction circuit for use in a correction circuit for generating a control signal that corrects a change in characteristics caused by production conditions or physical conditions such as changes in power supply and temperature conditions in transistors included in semiconductor integrated circuits; And the delay circuit and the ring oscillator circuit in this correction circuit. In particular, the present invention relates to a correction circuit, a delay circuit and a ring oscillator circuit which can be preferably used to generate a reference clock generation circuit (timing generation circuit) in, for example, an internal subsynchronous semiconductor memory device. Background technique [0002] In CMOS semiconductor integrated circuits, some delay circuits used as timing generating circuits or the like use CMOS transistors. A delay circuit using a CMOS transistor utilizes the signal transmission delay characteris...

AI Technical Summary

Problems solved by technology

Therefore, when the time period until this voltage is obtained from the standby-release state is too long, the correction circuitry 230 and the delay circuit including the correction circuitry 230 cannot actually be used for such a long time.

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