Capacitor Mismatch-Insensitive Multiplying-DAC Topologies with Unity Feedback Factor

This chapter describes two capacitor mismatch-insensitive MDAC architectures with unity feedback factor. First, the conventional MDAC will be described and analysed, to be compared with the proposed circuits. Then, each one of the proposed MDACs will be discussed. Besides describing the basic concept, various analyses are carried out, namely, gain error, reference shifting error, feedback factor, and noise. These analyses show the benefits and limitations of each MDAC circuit. To conclude the section a comparative analysis is carried out with other MDAC and multiply-by-two amplifiers (MBTAs).