The DAC is programmable from effectively zero volts up to 2.55V. For output voltages up to 5.1V, the feedback is divided by 2. When the pre-scalar is set to a gain of one half, the DC gain in the PID compensator is doubled. The XRP7724 has 3 input pre-scalars with output voltages from zero volts up to 1.6, 3.2, or 5.5V.