AD1893

a FEATURES Low Cost LQFP and PDIP Packages 3 V Supply Performance Specified—Very Low Power Automatically Senses Sample Frequencies—No Programming Required Rejects Sample Clock Jitter Accommodates Dynamically Changing Asynchronous Sample Clocks 8 kHz to 56 kHz Sample Clock Frequency Range Approximately 1:2 to 2:1 Ratio Between Sample Clocks –96 dB THD+N at 1 kHz 96 dB Dynamic Range Optimal Clock Tracking Control—Slow/Fast Settling Modes Linear Phase in All Modes Automatic Output Mute Flexible Four-Wire Serial Interfaces with Right-Justified Mode Power-Down Mode On-Chip Oscillator APPLICATIONS Consumer CD-R, DAT, DCC, MD and 8 mm Video Tape Recorders Including Portables Digital Audio Communication/Network Systems Computer Multimedia Systems Low Cost SamplePort® 16-Bit Stereo Asynchronous Sample Rate Converter AD1893 SYSTEM DIAGRAM EXAMPLE FREQUENCIES: DAT 48kHz OR CD 44.1kHz OR BROADCAST 32kHz EXAMPLE FREQUENCIES: DAT 48kHz OR CD 44.1kHz OR BROADCAST 32kHz AD1893 INPUT SAMPLE CLOCK INPUT SERIAL DATA OUTPUT SAMPLE CLOCK OUTPUT SERIAL DATA The AD1893 uses multirate digital signal processing techniques to construct an output sample stream from the input sample stream. The input word width is 4 to 16 bits for the AD1893. Shorter input words are automatically zero-filled in the LSBs. The output word width is 24 bits. The user can receive as many of the output bits as desired. Internal arithmetic is performed with 22-bit coefficients and 27-bit accumulation. The digital samples ...