Abstract
In this paper we proposed an approach for obtaining optimal stable modulator coefficients, which satisfy both SNR and stable input limit requirements. The empirical (3rd to 5th order) stable input limit formula is presented. Modulator examples are presented to demonstrate the usage of proposed method. The simulation results show that nearly 1-bit (6 dB) resolution is improved with the proposed method. The op-amp dc-offset influence on modulator performance is also discussed.
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