Low voltage, high folding rate folding amplifier

Folding and Interpolating A/D converters have been shown to be an effective means of digitization of high bandwidth signals at intermediate resolution. The reduction in the number of comparators is obtained by the use of folding amplifiers, through generating more than one zero crossing points. This paper presents low voltage, high folding rate folding amplifier. The folding amplifier is designed based on simple low voltage folding principle with folding factor=8. The design is implemented using 0.18-um technology at 1.7V supply voltage. The simulation results are compared with current steering folding amplifier. The simulation result indicates that the zero crossing points obtained by using the method results in high-speed, low power operation.

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