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Amplifying circuit, amplifying apparatus, and memory apparatus

A technology of amplifying circuit and amplifying device, applied in the field of amplifying circuit, amplifying device and memory device, can solve the problems of impossible to meet high performance and low power consumption, etc.

Inactive Publication Date: 2005-02-09
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is impossible to satisfy the demands for high performance and low power consumption necessary for each electronic device in recent years

Method used

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  • Amplifying circuit, amplifying apparatus, and memory apparatus
  • Amplifying circuit, amplifying apparatus, and memory apparatus
  • Amplifying circuit, amplifying apparatus, and memory apparatus

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Embodiment Construction

[0039] Specific embodiments of the amplifying circuit according to the present invention will be described below with reference to the accompanying drawings. Furthermore, the amplifying circuit according to the present invention can be applied in a sense amplifier of a memory device, and can even be applied in an amplifying circuit of other different signal processing devices.

[0040] An amplifying circuit 1 according to the present invention is provided, consisting of, for example, figure 1 The differential amplifier circuit 2 shown, the latch amplifier circuit 3, and the switching circuit 4 for switching operations between the two amplifier circuits 2 and 3 are constituted.

[0041] The differential amplifier circuit 2 is composed of N-channel MOS (Metal-Oxide-Semiconductor, Metal-Oxide Semiconductor) transistors (FETs, FieldEffect Transistor--field effect transistors) Q1, Q2 used as a differential pair. The resistance pair of the load is composed of R1, R2, and an N-chann...

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Abstract

To attain both of the acceleration of an amplifier circuit and the reduction of power consumption. The amplifier circuit is provided with a differential amplifier circuit, a latch type amplifier circuit and a switching circuit for switching the drive of these two amplifier circuits and constituted so as to drive the latch type amplifier circuit after driving the differential amplifier circuit by the switching circuit, especially the drive of the differential amplifier circuit is stopped after starting the drive of the latch type amplifier circuit.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Japanese Priority Document No. 2003-273646 filed with the Japan Patent Office on July 11, 2003, which is incorporated herein by reference. technical field [0003] The invention relates to an amplifying circuit, an amplifying device and a memory device. Background technique [0004] Conventionally, an amplification circuit that amplifies a signal is mainly used in various circuits built in various electronic devices. Particularly, in a memory device having a huge memory capacity, a sense amplifier for an amplifying circuit is connected to each memory cell. [0005] The amplifying circuit as described above has a differential amplifying circuit 101 with two transistors Q101 and Q102 in differential connection as shown in FIG. The latch-type amplifying circuit 102 of the latch constituted by Q106 is widely known (for example, reference may be made to Patent Document 1: Laid-Open Ja...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11C11/419G11C7/06G11C7/08G11C11/409H03F3/45
CPCG11C7/065G11C7/06G11C7/08
Inventor 中岛胜也
Owner SONY CORP