A system and method for generating an analog signal is disclosed. In one embodiment, system includes a first-in, first-out (FIFO) buffer configured to receive and store a plurality of digital values written to the FIFO buffer. The system further includes a digital-to-analog converter (DAC) coupled to read the digital values from the FIFO buffer and configured to convert the digital values to an analog signal. The FIFO buffer is configured to operate in a first mode in which writes to the FIFO buffer are inhibited and current digital values stored in the FIFO buffer are provided to the DAC in a repeating sequence.