Patent ID: 8493253

Claim:
An N-bit digital-to-analog converting device for converting an N-bit binary digital signal into an analog voltage according to a clock signal that alternates between first and second states, N being an integer not less than two, said N-bit digital-to-analog converting device comprising: a decoder operable for converting the digital signal into a multi-bit thermometer code during each cycle of the clock signal; a random number generator operable to generate a reset signal having at least one high logic level bit and at least one low logic level bit, the high and low logic level bits of the reset signal being equal in number and having a random, time-varying arrangement; and a converting module adapted for receiving the clock signal, coupled electrically to said decoder and said random number generator, and configured to convert the thermometer code into the analog voltage corresponding to the digital signal when the clock signal is in the first state, and to reset the analog voltage to a reset value according to the reset signal when the clock signal is in the second state.