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JP2004129255A Expired / Lapsed JP ⏱️ 0.0 years remaining

Delay locked loop circuit for internally performing duty cycle correction and duty cycle correction method thereof

Assignee: Samsung Electronics Co Ltd
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Filing: 2003-09-24
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Granted: —
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Expires: 2023-09-24
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Abstract

Abstract Translated from Japanese 【課題】 内部でそれ自体でデューティサイクル補正を行うDLL回路及びそのデューティサイクル補正方法を提供する。 【解決手段】 前記DLL回路は上昇エッジを合せるためのループ及び下降エッジを合せるためのループだけでなく、デューティサイクル補正のためのループをさらに備える。したがって前記DLL回路は位相混合器なしに遅延同期ループ回路の内部でそれ自体でデューティサイクルを補正する。これにより、広いDCC範囲を有し、電力消耗が低く、動作周波数に対する制約が少なく、またメモリ装置の特性を向上させうる。 【選択図】   図3 PROBLEM TO BE SOLVED: To provide a DLL circuit which internally performs duty cycle correction and a duty cycle correction method thereof. The DLL circuit further includes a loop for adjusting a rising edge and a loop for adjusting a falling edge, as well as a loop for correcting a duty cycle. Therefore, the DLL circuit corrects the duty cycle by itself inside the delay locked loop circuit without a phase mixer. Accordingly, the memory device has a wide DCC range, low power consumption, few restrictions on an operating frequency, and can improve characteristics of a memory device. [Selection diagram] FIG.

Inventors

  • 👤 Geun-Hee Cho
  • 👤 趙 根 ▲ヒー▼
  • 👤 Kyu-Hyoun Kim
  • 👤 金 圭 現

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-01 15:40
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/13; H03L; H03L7/00; H03L7/06; H03L7/08; H03L7/081; H03L7/0812; H03L7/0814; H03K5/156; H03K5/1565; H03L7/0816; H03L7/0818; H03L7/085; H03L7/089

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