| 摘要 |
A digital-to-analogue converter, comprising an input (20) for receiving a digital input signal (Yin); a first terminal (80) for delivering a first analogue signal (Iout+, V1+); a second terminal (110) for delivering a second analogue signal (Jout+, V2+); an input controller (30) adapted to generate a first digital word (X1) in response to the digital input signal (Yin); a first analogue signal generator (70) adapted to generate said first analogue signal (Iout+, V1+); the first analogue signal generator (70) comprising a first dump terminal (85) and a first plurality of current sources (I1, ..., IM) individually controllable to deliver currents to either the first terminal (80) or to the first dump terminal (85) in response to said first digital word (X1); wherein the input controller (30) includes means for inverting said digital input signal (Yin); the input controller (30) being adapted to generate a second digital word (X2) in response to said inverted signal (Y*in); and a second analogue signal generator (100) adapted to generate said second analogue signal (Jout+,V2+), the second analogue signal generator (100) comprising a second dump terminal (115) and a second plurality of current sources (J1, ..., JM) individually controllable to deliver currents to either the second terminal (110) or to the second dump terminal (115) in response to said second digital word (X2). |
