Design of a 20-Gsps 12-bit time-interleaved analog-to-digital conversion system

• 来源期刊: 核技术（英文版）
• 年，卷（期）: 2021,（3）
• 所属期刊栏目: NUCLEAR ELECTRONICS AND INSTRUMENTATION
• 页码范围: 30-40
• 页数: 11页
• 语种: 英文

摘要

The time-interleaved analog-to-digital conver-sion (TIADC) technique is an effective method for increasing the sampling rate in a waveform digitization system. In this study, a 20-Gsps TIADC system was designed. A wide-bandwidth performance was achieved by optimizing the analog circuits, and a sufficient effective number of bits (ENOB) performance guaranteed using the perfect reconstruction algorithm for mismatch error cor-rection. The proposed system was verified by tests, and the results indicated that a -3 dB bandwidth of 6 GHz and the ENOB performance of 8.7 bits at 1 GHz and 7.6 bits at 6 GHz were successfully achieved.