Sagnik Bhar, Annapurna Mondal, S. Srimani, I. Hatai, Subhajit Das, K. Ghosh, H. Rahaman
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A low power driver amplifier for Fully Differential ADC
A driver circuit of an analog-to-digital converter (ADC) is one of the critical parts which influences the transient response, frequency response and the noise floor of the system. To satisfy the accuracy and speed requirements, a modified differential difference amplifier (DDA) Common Mode Feedback (CMFB) circuit is designed along with a folded cascode op-amp with a supply voltage of 1. 8V. The entire system is designed in CADENCE Virtuoso using 180nm technology library. Different parametric and statistical simulations have been performed to test its viability under the influence of mismatches and variations of different process parameters and temperature.
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