A method of fabricating a semiconductor device includes the steps of forming a series of layers formed on a substrate, the layers including a first plurality of layers including an n-type ohmic contact layer, a p-type modulation doped quantum well structure, an n-type modulation doped quantum well structure, and a fourth plurality of layers including a p-type ohmic contact layer. The circuit furthermore comprises a comparator with a first input, a second input and a comparator output, a feedback capacitor connected to an offset tuning input of the input amplifier stage, and a plurality of switches that are controllable by switching signals to allow the circuit to be switched from a first phase to a second phase. A digital camera can support many different printers, each with its own set of parameters such as for example print size, pixel size, colorimetry, sensitometry, and artifacts compensation.