A 240-mW 2.1-GS/s 52-dB SNDR Pipeline ADC Using MDAC Equalization

Autor: Chun-Ying Chen, Shauhyuarn Sean Tsai, Chun-Sheng Huang, Wenbo Liu, Tianwei Li, Loke Kun Tan, Bryan Juo-Jung Hung, Steven T. Jaffe, Jiangfeng Wu, Hung Vu, Wei-Ta Shih, Binning Chen, Lin He, Hing T. Hung
Rok vydání: 2013
Předmět:
Zdroj: IEEE Journal of Solid-State Circuits. 48:1818-1828
ISSN: 1558-173X
0018-9200
Popis: This paper introduces multiplying digital-to-analog converter (MDAC) equalization, a digital correction technique for pipeline ADCs that corrects MDAC gain, settling, and other dynamic errors using successive digital FIR filters operating on sub-ADC output samples. This technique reduces the required MDAC residue amplifier (RA) bandwidth relative to the sampling frequency, thereby reducing ADC power. MDAC equalization is demonstrated in a 240-mW 2.1-GS/s ping-pong pipeline ADC in 40-nm CMOS where MDAC RA power is reduced from 175 to 53 mW by 70%. The ADC achieves 58 dB SNR and 52 dB SNDR.
Databáze: OpenAIRE