| 摘要 |
An analog-to-digital or digital-to-analog converter comprises: a signal input terminal an integrator connected to the signal input terminal; a plurality of constant current sources connected to the integrator so that the integrator is supplied with respective constant currents; a first counter having a first predetermined number of bits for higher significant bits and a second counter having a second predetermined number of bits for lower significant bits; and a clock signal generator for generating a first clock signal having a first clock frequency and being supplied to the first counter and a second clock signal having a second frequency higher than the first clock frequency and being supplied to the second counter; and currents of the plurality of constant current sources are respectively determined according to the first and second predetermined numbers of bits and the first and second clock frequencies of the first and second clock signals, respectively. |
