AD1891

a FEATURES Automatically Sense Sample Frequencies—No Programming Required Tolerant of Sample Clock Jitter Smooth Transition When Sample Clock Frequencies Cross Accommodate Dynamically Changing Asynchronous Sample Clocks 8 kHz to 56 kHz Sample Clock Frequency Range 1:2 to 2:1 Ratio Between Sample Clocks –106 dB THD+N at 1 kHz (AD1890) 120 dB Dynamic Range (AD1890) Optimal Clock Tracking Control –Short/Long Group Delay Modes –Slow/Fast Settling Modes Linear Phase in All Modes Equivalent of 4 Million 22-Bit FIR Filter Coefficients Stored On-Chip Automatic Output Mute Flexible Four Wire Serial Interfaces Low Power APPLICATIONS Digital Mixing Consoles and Digital Audio Workstations CD-R, DAT, DCC and MD Recorders Multitrack Digital Audio and Video Tape Recorders Studio to Transmitter Links Digital Audio Signal Routers/Switches Digital Audio Broadcast Equipment High Quality D/A Converters Digital Tape Recorder Varispeed Applications Computer Communication and Multimedia Systems PRODUCT OVERVIEW SamplePort Stereo Asynchronous Sample Rate Converters AD1890/AD1891 SYSTEM DIAGRAM EXAMPLE FREQUENCIES: DAT 48kHz OR CD 44.1kHz OR BROADCAST 32kHz INPUT SAMPLE CLOCK EXAMPLE FREQUENCIES: DAT 48kHz OR CD 44.1kHz OR BROADCAST 32kHz OUTPUT SAMPLE CLOCK AD1890/ AD1891 INPUT SERIAL DATA OUTPUT SERIAL DATA the two clocks. The input and output sample clock frequencies can nominally range from 8 kHz to 56 kHz, and the ratio between them can vary from 1:2 to 2:1. The AD1890/AD1891 use multirate ...