资 源 简 介
digital audio playback system. It is comprised of a mulTIbit sigmadeltamodulator, high performance digital interpolaTIon filters,and conTInuous-TIme differential current output DACs. Otherfeatures include an on-chip clickless stereo attenuator and mutecapability, programmed through an SPI compatible serial controlport. The AD1955 is fully compatible with all known DVD audioformats including 192 kHz as well as 96 kHz sample frequenciesand 24 bits. It is also backward compatible by supporting 50 μs/15 μs digital de-emphasis intended for “redbook” compact discs,as well as de-emphasis at 32 kHz and 48 kHz sample rates.The AD1955 has a very flexible serial data input port thatallows for glueless interconnection to a variety of ADCs, DSPs,SACD decoders, external digital filters, AES/EBU receivers, and(continued on page 12)
