| 摘要 |
Switching circuits (15; I1; 2R; I2, 2R; etc) are connected to respective branch points, of an IC D/A converter, constituted by an output terminal (Vout) of the converter and connection points between series connected first resistors (R) and a second, terminating resistor (2R). …<??>At least one switching circuit (15), for example dealing with the most significant bit (Ao) of a digital signal input, has a configuration in which the relevant branch point (0 min ) is supplied from a first voltage supply level (VREF) and from a second voltage supply level (ground) respectively through different resistors (2R min , 2R sec ), in dependence upon the value of the most significant bit. …<??>The different resistors have slightly different nominal resistance values so as to compensate for the effects of substrate bias voltage. |
