| 摘要 |
A digital/analog converter circuit having a first and a second D/A converter device of the pulse-width-modulation type for receiving the upper l-bit data and the lower m-bit data which, together, represent the digital input data of l + m bits, and for generating a first and a second pulse signal in accordance with the upper and the lower bit data, and comprising an analog signal generator circuit for generating a direct voltage which corresponds to the sum of the mean value of the first pulse signal and the mean value of 1/2<I> of the second pulse signal, characterised in that the analog signal generator circuit contains a voltage divider (32) which divides the voltage of the second pulse signal by 2<I>, and a direct voltage generator circuit (33, 34, 36; 40, 42, 44), which outputs a direct voltage which corresponds to the sum of the mean value of the output signal of the voltage divider circuit (32) and the mean value of the first pulses. <IMAGE> |
