In the last years the interest toward low-power low-voltage integrated systems has consistently grown due to the increasing importance of portable equipment and to the reduction of the supply voltage of modern scaled-down technology IC [1, 2]. In such systems, a number of analog functions can be efficiently implemented with SC technique which ensures performance accuracy and large dynamic range. At low supply voltage these features have to be maintained. In particular the large output swing (rail-to-rail) must be targeted to achieve a sufficient dynamic range. This is because with the supply voltage reduction the noise level remains to first order constant, while the signal swing decreases more than linearly.
KeywordsSupply Voltage Output Swing Power Supply Rejection Ratio Virtual Ground CMFB Circuit
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