Patent ID: 7801498

Claim:
A circuit of a system-on-chip to transmit an analog signal at a given transmission frequency modulated by a digital input signal coded in a number m of bits, where m is a given integer number, the circuit comprising: at least one circuit output path to deliver the analog signal to be transmitted; a power supply to deliver an activation voltage; and a number 2 m −1 of unit cells, each including: a first block including at least one input path coupled to the power supply to receive the activation voltage through a respective one of switching elements, and at least one output path, and a second block including at least a first input path coupled to the output path of the first block, at least a second input path to receive a local oscillator signal, and at least one output path coupled to the circuit output path, wherein the switching elements are each controlled as a function of a value of a bit of the digital input signal, a bit of index j of the digital input signal, where j is between 0 and m−1, is adapted to control the switching elements respectively associated with the unit cells of a group of 2 j unit cells.