Bandpass ΔΣ ADC using pipelined SAR ADC. Issue 10 (1st May 2020)

• Record Type: Journal Article
• Authors: Oh, S.; Kim, K.; Chae, H.
• Is Part Of: Electronics letters. Volume 56:Issue 10(2020)
• Page Start: 480
• Page End: 482
• Publication Date: 2020-05-01
• Subjects: quantisation (signal) -- analogue‐digital conversion -- delta‐sigma modulation; energy efficiency -- high sampling rate -- low oversampling ratio -- SAR conversion -- residue signal -- internal quantiser -- second‐order bandpass ΔΣ ADC -- low‐order noise‐shaping -- pipelined structure -- inherent delay -- second‐order bandpass noise‐shaping -- pipelined successive‐approximation‐register ADC -- pipelined SAR ADC; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2020.0314
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : This Letter proposes a second‐order bandpass ΔΣ ADC using a pipelined successive‐approximation‐register (SAR) ADC as an internal quantiser. The second‐order bandpass noise‐shaping is achieved by utilising the residue signal after SAR conversion and inherent delay existing in a pipelined structure. The proposed ADC can show very high resolution even with low‐order noise‐shaping and low oversampling ratio. Also, it shows good energy efficiency and a high sampling rate due to the use of a pipelined SAR ADC as a quantiser.