摘要 |
A digital-to-analog converter network for converting a digital signal having a plurality of binary bits into an analog output signal includes an R-2R ladder array (8a), a reference current source (IREF), a plurality of switches (S1, S2, ...S9) associated with ladder sections of the ladder array (8a), and an operational amplifier (14). An equalization circuit (17) is operatively coupled to the inverting input of the operational amplifier (14) for selectively switching in a code-dependent impedance so that the effective output impedance of the ladder array (8a) remains substantially constant with binary codes of the digital input signal. <IMAGE> |
申请人 |
ADVANCED MICRO DEVICES, INC., SUNNYVALE, CALIF., US |
发明人 |
LINZ, ALFREDO R., AUSTIN TEXAS 78745, US;PETERSON, JOE W., AUSTIN TEXAS 78758, US;NAIR, VELAYUDHAN VIJAYAKUMARAN, AUSTIN TEXAS 78749, US |