Abstract: An image processing method and analog front end circuit are described. An analog signal is converted to digital form to obtain a digital signal by increasing a conversion resolution value of an analog-to-digital converter module. The digital signal is subsequently amplified to obtain an amplified digital output signal.

Abstract: A digital to analog converter (DAC) converts a plurality of digital input data into a plurality of analog output signals. The DAC includes an element pool having a plurality of elements, a random number generator for converting the digital input data into a set of control signals, a plurality of summing nodes for generating analog output signals, and a plurality of switches for connecting the elements to the summing nodes. The switches are controlled by the control signals. Because of the control of the random number generator, the element signals transferring to the summing nodes can be used alternatively and simultaneously.