Digital logic buffer for converting single polarity analog signals to dual polarity analog signals

摘要

A digital logic buffer device for generating dual polarity analog signals is described. In the presently preferred embodiment, buffer receives the positive polarity analog output of a digital-to-analog converter (VDAC), and a sign bit. If the sign bit indicates that a positive polarity is required, the buffer will output approximately VDAC. If a negative polarity is required, aproximately -VDAC will be generated.