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A low power 12-bit 30 MSPS CMOS pipeline ADC with on-chip voltage reference buffer

Chen Qihui, Qin Yajie, Lu Bo and Hong Zhiliang

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Abstract: A 12-bit 30 MSPS pipeline analog-to-digital converter (ADC) implemented in 0.13-μm 1P8M CMOS technology is presented. Low power design with the front-end sample-and-hold amplifier removed is proposed. Except for the first stage, two-stage cascode-compensated operational amplifiers with dual inputs are shared between successive stages to further reduce power consumption. The ADC presents 65.3 dB SNR, 75.8 dB SFDR and 64.6 dB SNDR at 5 MHz analog input with 30.7 MHz sampling rate. The chip dissipates 33.6 mW from 1.2 V power supply. FOM is 0.79 pJ/conv step.

Key words: analog-to-digital converterpipelineSHA removingopampon-chip reference buffer

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    Received: 18 August 2015 Revised: 11 September 2010 Online: Published: 01 January 2011

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      Chen Qihui, Qin Yajie, Lu Bo, Hong Zhiliang. A low power 12-bit 30 MSPS CMOS pipeline ADC with on-chip voltage reference buffer[J]. Journal of Semiconductors, 2011, 32(1): 015003. doi: 10.1088/1674-4926/32/1/015003 Chen Q H, Qin Y J, Lu B, Hong Z L. A low power 12-bit 30 MSPS CMOS pipeline ADC with on-chip voltage reference buffer[J]. J. Semicond., 2011, 32(1): 015003. doi: 10.1088/1674-4926/32/1/015003.Export: BibTex EndNote
      Citation:
      Chen Qihui, Qin Yajie, Lu Bo, Hong Zhiliang. A low power 12-bit 30 MSPS CMOS pipeline ADC with on-chip voltage reference buffer[J]. Journal of Semiconductors, 2011, 32(1): 015003. doi: 10.1088/1674-4926/32/1/015003

      Chen Q H, Qin Y J, Lu B, Hong Z L. A low power 12-bit 30 MSPS CMOS pipeline ADC with on-chip voltage reference buffer[J]. J. Semicond., 2011, 32(1): 015003. doi: 10.1088/1674-4926/32/1/015003.
      Export: BibTex EndNote

      A low power 12-bit 30 MSPS CMOS pipeline ADC with on-chip voltage reference buffer

      doi: 10.1088/1674-4926/32/1/015003
      • Received Date: 2015-08-18
      • Accepted Date: 2010-07-12
      • Revised Date: 2010-09-11
      • Published Date: 2010-12-19

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