Patent ID: 8319676

Claim:
A method for converting a digital input signal (S_de) to an analog output signal (S_aa), characterized by the following steps: a) generating an analog first intermediate signal (S_z 1 ) from a first pulse-width modulated signal (S_p 1 ), b) generating an analog second intermediate signal (S_z 2 ) from a second pulse-width modulated signal (S_p 2 ), c) converting the second intermediate signal (S_z 2 ) to a third intermediate signal (S_z 3 ), said conversion being controlled by a third pulse-width modulated signal (S_p 3 ), d) generating an analog fourth intermediate signal (S_z 4 ) from the third intermediate signal (S_z 3 ), and e) generating the analog output signal (S_aa) from the first intermediate signal (S_z 1 ) and the fourth intermediate signal (S_z 4 ), f) wherein said first, second and/or third pulse-width modulated signal (S_p 1 , S_p 2 , S_p 3 ) is derived from the digital input signal (S_de).