Before revision: A 1-bit DAC (sometimes called Bitstream converter by Philips) is used as a consumer electronics marketing term describing an oversampling digital-to-analog converter (DAC) with an actual 1-bit DAC (that is, a simple "on/off" switch) in a delta-sigma loop operating at many multiples of the sampling frequency .
After revision: A 1-bit DAC (sometimes called Bitstream converter by Philips) is used as a consumer electronics marketing term describing an oversampling digital-to-analog converter (DAC) that utilizes a digital noise shaping delta-sigma modulatorthat outputs to an actual 1-bit DAC (which could be fully differential to minimize crosstalk) operating at many multiples of the sampling frequency .