CMOS data converters for communications
CMOS data converters for communications
Design of Analog CMOS Integrated Circuits
Design of Analog CMOS Integrated Circuits
IEEE Transactions on Circuits and Systems Part I: Regular Papers
Behavioral modeling of pipeline ADC building blocks
International Journal of Circuit Theory and Applications
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A 1.2 V 10-bit 60 MS/s pipeline Analog-to-Digital Converter (ADC), fabricated in a 130 nm CMOS technology, is presented. The prototype is composed by five 3-bit pipeline stages and a Sample and Hold (S&H) circuit at the front. Two-stage Miller-compensated Operational Transconductance Amplifiers (OTAs), offset-compensated comparators and bootstrapping sampling switches have been used due to the low voltage supply requirements. Special attention has been paid to the reduction of the power consumption using a thorough design methodology. The converter only consumes 23 mW including on-chip reference voltages and bias current generators. The differential and integral nonlinearity of the ADC are below 0.60 and 0.61 LSBs, respectively. The pipeline converter achieves an effective resolution above 9 bits along the Nyquist bandwidth, and obtains 0.67 pJ energy consumption per conversion, making it one of the most energy-efficient 10-bit video-rate pipeline ADC reported to date.