| 摘要 |
A digital-to-analog converter well suited for fabrication in monolithic form, in which lower-order bits of the input are converted by means of binary-weighted current switches, and higher-order bits of the input are converted by means of a thermometer-type decoder and current segment switches. Specifcally, the converter includes a digital input register, a second register to receive the lower-order bits of the input, a set of binary-weighted current switches to generate an analog signal component proportional to the lower-order bits of the input, a thermometer-type decode to decode the higher-order bits of the input, and a set of identical current segment switches to generate an analog signal component proportional to the higher-order bits of the input. Importantly there is also a third register between the decoder and the identical current segment switches, to insure that the current-weighted switches and the identical current segment switches are actuated simultaneously to minimize output transients. |
