A multiple-gain transconductance amplifier circuit is presented. It is developed by utilizing programmable gain source-coupling differential pair output stage forming multiple-gain transconductance amplifier outputs. A reconfigurable nth-order filter based on a multi-gain transconductance amplifier where the multi-gain transconductance amplifier includes a linear voltage-to-current converter and a programmable current-folding output stage was implemented. The filter achieves independent programmability while still using a single active device per pole. Further, the proposed multiple-gain transconductance amplifier can be employed to design poly phase filters and transconductance amplifier cell for an amplifier-based low-dropout regulator.