Unit cell-based dac

A unit cell-based Digital-To-Analog Converter (DAC) configured to operate in N consecutive phases, wherein the unit cell-based DAC comprises a plurality of unit cells and wherein a single transition between a first state and a second state of the unit cell-based DAC is caused by M transitions of the plurality of unit cells between corresponding first states and second states, where M is smaller than N, wherein each transition of a unit cell is configured to occur during one of the N consecutive phases, and wherein interconnections of the unit cells are reconfigurable such that the unit cell-based DAC is configured to switchably operate in one of a Pulse Amplitude Modulation 3-Level (PAM3) mode, in which the unit cell-based DAC converts a two-bit input signal into a three-level output signal, and a Pulse Amplitude Modulation 4-Level (PAM4) mode in which the unit cell-based DAC converts the two-bit input signal into a four-level output signal.