3.7 A 10mW 16b 15MS/s Two-Step SAR ADC with 95dB DR Using Dual-Deadzone Ring-Amplifier
| Autor: | Ahmed ElShater, Jason Muhlestein, Spencer Leuenberger, Praveen Kumar Venkatachala, Kazuki Sobue, Koichi Hamashita, Un-Ku Moon, Calvin Yoji Lee |
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| Rok vydání: | 2019 |
| Předmět: |
Ring (mathematics)
ComputerSystemsOrganization_COMPUTERSYSTEMIMPLEMENTATION Computer science Amplifier 020208 electrical & electronic engineering Two step 020206 networking & telecommunications Successive approximation ADC Hardware_PERFORMANCEANDRELIABILITY 02 engineering and technology Dead zone Dual (category theory) Hardware_INTEGRATEDCIRCUITS 0202 electrical engineering electronic engineering information engineering Electronic engineering Hardware_ARITHMETICANDLOGICSTRUCTURES |
| Zdroj: | ISSCC |
| Popis: | The two-step SAR architecture has been a popular choice for power-efficient ADCs used in applications such as medical imaging. The simple and scalable architecture of the SAR ADC enables efficient multi-bit conversion per stage [1, 2] however, the maximum performance of the two-step SAR is limited by the residue amplifier. The ring amplifier (RAMP) has enabled efficient two-step SAR ADCs [3]. Despite this, RAMP-based high-precision ADCs (>16b) remain unexplored. This paper presents a two-step SAR ADC utilizing a fully differential RAMP achieving 95dB DR. Two techniques that contribute to the energy-efficiency of the ADC are also presented: dynamic digital supply and DAC impedance-matching. |
| Databáze: | OpenAIRE |
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