Analog Devices AD1877
The AD1877 is a stereo, 16-bit oversampling ADC based on Sigma Delta (∑∆) technology intended primarily for digital audio bandwidth applications requiring a single 5 V power supply. Each single-ended channel consists of a fourth-order one-bit noise shaping modulator and a digital decimation filter. The AD1877 accepts a 256 × F S or a 384 × FS input clock (FS is the sampling frequency) and operates in both serial port “master” and “slave” modes.FEATURES
Single 5 V Power Supply Single-Ended Dual-Channel Analog Inputs 92 dB (Typ) Dynamic Range 90 dB (Typ) S/(THD+N) 0.006 dB Decimator Passband Ripple Fourth-Order, 64-Times Oversampling ⌺⌬ Modulator Three-Stage, Linear-Phase Decimator 256 ؋ F S or 384 ؋ F S Input Clock Less than 100●W (Typ) Power-Down Mode Input Overrange Indication On-Chip Voltage Reference Flexible Serial Output Interface 28-Lead SOIC Package
APPLICATIONS
Consumer Digital Audio Receivers Digital Audio Recorders, Including Portables CD-R, DCC, MD and DAT Multimedia and Consumer Electronic Equipment Sampling Music Synthesizers Digital Karaoke Systems LRCK WCLK BCLK DVDD1 DGND1 RDEDGE S/M 384/256 AVDD 1 2 3 4 5 6 7 8 9 D A C Single-Supply 16-Bit ⌺⌬ Stereo ADC AD1877* FUNCTIONAL BLOCK DIAGRAM SERIAL OUTPUT INTERFACE CLOCK DIVIDER 28 27 26 THREE-STAGE FIR DECIMATION FILTER THREE-STAGE FIR DECIMATION FILTER 25 CLKIN TAG SOUT DVDD2 24 DGND2 23 RESET MSBDLY RLJUST AGND VINR CAPR1 CAPR2 AGNDR VREFR D A C D A C D A C 22...