IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543

この記事には本公開記事があります。本公開記事を参照してください。
引用する場合も本公開記事を引用してください。

A high-speed single channel reconfigurable 1-GS/s to 1.5-GS/s, 8-bit to 6-bit SAR ADC in 28nm CMOS
Qing SuXuan GuoHanbo JiaYihan LiKai SunXinyu Liu
著者情報
ジャーナル フリー 早期公開

論文ID: 22.20250220

この記事には本公開記事があります。
詳細
抄録

This paper presents a high-speed single channel reconfigurable successive approximation register (SAR) analog-to-digital converter (ADC) for ultra-high-speed system. The ADC operates in two modes: 1GS/s 8-bit and 1.5GS/s 6-bit. A floating-skip algorithm is proposed to address the speed limitation and amplitude attenuation of input signals in 6-bit operating mode, while avoiding unnecessary switching power consumption. Meanwhile, the ADC employs binary redundant CDAC to improves the fault tolerance range and relaxes the requirements for setting accuracy, further achieving high conversion speed. The reconfigurable ADC is designed in the 28-nm CMOS process, it achieves the 36.69-/47.68-dB signal-to-noise-and-distortion ratio (SNDR) at 1-/1.5-GHz sampling rate with the same power consumption of 4.42 mW. The ADC core occupies an active area of only 0.003948 mm2. It achieves a FoMw of 22.31 fJ/conv.-step at 8-bit conversion mode.

著者関連情報
© 2025 by The Institute of Electronics, Information and Communication Engineers
feedback
Top