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Circuit with remote amplifier

A technology of amplifiers and sense amplifiers, applied in instruments, static memory, digital memory information, etc., can solve problems such as large RC delay

Active Publication Date: 2015-04-15
TAIWAN SEMICON MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This goal is difficult to achieve because the global bit lines are long, and the RC delay on the global bit lines is large

Method used

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  • Circuit with remote amplifier
  • Circuit with remote amplifier
  • Circuit with remote amplifier

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Embodiment Construction

[0031] The embodiments or examples shown in the drawings are disclosed below using specific language. However, it should be understood that these embodiments and examples are not limiting. Any alterations and modifications in the disclosed embodiments, and any further application of the principles disclosed herein are contemplated, as would normally occur to one of ordinary skill in the art. Reference numerals may be repeated throughout the embodiments, but even though the embodiments use the same reference numerals, there is no requirement that components from one embodiment be implemented in another embodiment.

[0032] Certain embodiments have one or a combination of the following features and / or advantages. Amplifies the weak signal on the opposite side of the global bitline or on the sideline. Data transfers on global bit lines are accelerated during write cycles. Therefore, the speed for writing data into memory cells is improved.

[0033] example circuit

[0034]...

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Abstract

A circuit comprises a first driver, a second driver, and a remote sense amplifier. The first driver is configured to generate a first data signal on a first data line. The second driver is configured to generate a control signal on a control signal line. An RC delay of the control signal line is less than an RC delay of the first data line. The remote sense amplifier is configured to receive the first data signal, a second data signal on a second data line, and the control signal. The control signal line is configured for the control signal to enable the remote sense amplifier to amplify the voltage difference between the first data signal and the second data signal at inputs of the remote sense amplifier, if the voltage difference reaches a predetermined value.

Description

technical field [0001] The invention relates to circuits with remote amplifiers. Background technique [0002] As is well known, global bit lines can be regarded as input / output (IO) or data lines in a dynamic random access memory (DRAM). Global bit lines are typically established as a differential pair (ie, line GBL and corresponding line GBLb) and are used to transfer data bi-directionally between multiple memory banks and the IO interface. For example, global bit lines carry read data from the memory bank to the interface and write data from the interface to the memory bank. Depending on the structure of the memory, there may be as many as thousands of pairs of global bit lines GBL and GBLb in the memory. Furthermore, global bit lines are very long, eg, greater than 1 millimeter (mm). The capacitance on the global bit lines is on the order of a few hundred femtofarads (fF). Because of the large number of global bit lines, the global bit lines are usually designed to b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11C7/06
CPCG11C11/4091G11C11/4097
Inventor 谢尔吉·罗曼诺夫斯基
Owner TAIWAN SEMICON MFG CO LTD