A Single Op Amp Digitally Programmable Circuit for Minimal Realization of Arbitrary Gains

摘要

Three different configurations have been reported for programming explicitly inverting, positive fractional and non-inverting gains, respectively. This paper proposes a single operational amplifier digitally programmable circuit for a set of arbitrary gains, which may include inverting, positive fractional and/or non-inverting gains, with minimum number of elements. The design procedure is illustrated with an example.