A CMOS low-voltage (1.2 V) switched buffer to be used as input stage in switched-opamp circuits is here presented. The circuit is based on the use of an op-amp featuring rail-to-rail input and output swing with constant transconductance (gm) over the input common mode voltage. The circuit operates from a single 1.2 V, consuming about 0.6 mW. The total harmonic distortion is about -61 dB for 5 MHz clock frequency with 2 Vpp input amplitude.
Ferri, G., Costa, A., Baschirotto, A. (1998). A 1.2 v rail-to-rail switched buffer. In Electronics, Circuits and Systems, 1998 IEEE International Conference on (pp.45-48). Institute of Electrical and Electronics Engineers Inc. [10.1109/ICECS.1998.813268].
A 1.2 v rail-to-rail switched buffer
BASCHIROTTO, ANDREA
1998
Abstract
A CMOS low-voltage (1.2 V) switched buffer to be used as input stage in switched-opamp circuits is here presented. The circuit is based on the use of an op-amp featuring rail-to-rail input and output swing with constant transconductance (gm) over the input common mode voltage. The circuit operates from a single 1.2 V, consuming about 0.6 mW. The total harmonic distortion is about -61 dB for 5 MHz clock frequency with 2 Vpp input amplitude.
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