Correction circuit, delay circuit and annular oscillator circuit

Abstract

A correction circuit for generating a control signal to correct a characteristic change of a first transistor, comprising: a control signal adjustment section including a constant voltage reducing element for determining one of a maximum voltage and a minimum voltage of the control signal, and a second transistor for determining the characteristics of the control signal, the gate of the second transistor receiving a prescribed voltage; and a resistor portion including two types of resistor elements having temperature-dependent characteristics of resistance values ​​different from each other, the resistor The elements are connected in series. The constant voltage reducing element, the second transistor, and the resistor portion are connected in series between the power supply terminal and the ground terminal. The control signal is output from a connection point between the control signal adjustment section and the resistor section. The constant voltage reducing element includes a transistor. The drain of the transistor included in the voltage lowering element is connected to the source of the second transistor, and the drain of the second transistor is connected to one end of the resistor portion.

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.

Images