An analog front end with a 12-bit 3.2-MS/s SAR ADC for a power line communication system
This paper presents an analog front end for a power line communication system, including a 12-bit 3.2-MS/s energy-efficient successive approximation register analog-to-digital converter, a positive feedback programmable gain amplifier, a 9.8 ppm/℃ bandgap reference and on-chip low-output voltage reg...
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Published in | Journal of semiconductors Vol. 35; no. 11; pp. 141 - 148 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
01.11.2014
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Subjects | |
Online Access | Get full text |
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Summary: | This paper presents an analog front end for a power line communication system, including a 12-bit 3.2-MS/s energy-efficient successive approximation register analog-to-digital converter, a positive feedback programmable gain amplifier, a 9.8 ppm/℃ bandgap reference and on-chip low-output voltage regulators. A two segment capacitive array structure (6 MSB 5 LSB) composed by split capacitors is designed for the SAR core to save area cost and release reference voltage accuracy requirements. Implemented in the GSMC 0.13 #m 1.5 V/12 V dual-gate 4P6M e-flash process, the analog front end occupies an area of 0.457 mm2 and consumes power of 18.8 mW, in which 1.1 mW cost by the SAR ADC. Measured at 500 kHz input, the spurious-free dynamic range and signal-to-noise plus distortion ratio of the ADC are 71.57 dB and 60.60 dB respectively, achieving a figure of merit of 350 U/conversion-step. |
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Bibliography: | This paper presents an analog front end for a power line communication system, including a 12-bit 3.2-MS/s energy-efficient successive approximation register analog-to-digital converter, a positive feedback programmable gain amplifier, a 9.8 ppm/℃ bandgap reference and on-chip low-output voltage regulators. A two segment capacitive array structure (6 MSB 5 LSB) composed by split capacitors is designed for the SAR core to save area cost and release reference voltage accuracy requirements. Implemented in the GSMC 0.13 #m 1.5 V/12 V dual-gate 4P6M e-flash process, the analog front end occupies an area of 0.457 mm2 and consumes power of 18.8 mW, in which 1.1 mW cost by the SAR ADC. Measured at 500 kHz input, the spurious-free dynamic range and signal-to-noise plus distortion ratio of the ADC are 71.57 dB and 60.60 dB respectively, achieving a figure of merit of 350 U/conversion-step. analog front end; successive approximation register; A/D; power line communication 11-5781/TN Chen Huabin, Xiang Jixuan, Xue Xiangyan, Chen Chixiao, Ye Fan, Xu Jun, Ren Junyan(State-Key Laboratory of ASIC and System, Fudan University, Shanghai 201203, China) |
ISSN: | 1674-4926 |
DOI: | 10.1088/1674-4926/35/11/115008 |