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SM5846AP 数据表(PDF) 1 Page - Nippon Precision Circuits Inc |
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SM5846AP 数据表(HTML) 1 Page - Nippon Precision Circuits Inc |
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1 / 36 page  SM5846AP NIPPON PRECISION CIRCUITS—1 NIPPON PRECISION CIRCUITS INC. Audio ICs Multi-function Digital Filter OVERVIEW The SM5846AP is a multi-function digital filter that incorporates 4/8 times oversampling digital audio signal reproduction, digital deemphasis, digital attenuation and soft mute functions. The I/O inter- face allows serial data transmission of 16/20/24/32- bit input data and 20/24-bit output data. FEATURES Functions s 8-times oversampling (interpolation) s Switchable 8/4 times oversampling output s Two master clock frequencies (refer to Clock Functions) • 384fs/512fs (normal-speed sampling) • 192fs/256fs (high-speed sampling) s Digital deemphasis • Compatible with 32/44.1/48 kHz (normal- speed) and 64/88.2/96 kHz (high-speed) input sampling frequencies • ON/OFF control s Digital attenuator • 128-step attenuation using linear 7-bit data set- ting s Soft muting • 1016/fs (normal-speed sampling) • 2032/fs (high-speed sampling) s Output data round-off operation (normal round-off or rectangular distribution dither round-off) s Selectable LR clock polarity s Microprocessor controllable s Input data format • 2s complement, MSB first, alternating L/R serial • 16/20/24/32-bit data selectable s Output data format • 2s complement, MSB first, simultaneous L/R serial • 20/24-bit data selectable. s 24-bit internal data processing s Jitter-free mode/synchronous mode selectable s Crystal oscillator circuit built-in s TTL-compatible outputs s Molybdenum-gate CMOS Filter Construction s Interpolation filter (linear 3-stage FIR filter) • Normal-speed sampling mode 1st stage (fs to 2fs) 121st order 2nd stage (2fs to 4fs) 21st order 3rd stage (4fs to 8fs) 13th order • High-speed sampling mode: 1st stage (fs to 2fs) 177th order 2nd stage (2fs to 4fs) 29th order 3rd stage (4fs to 8fs) 17th order s Deemphasis filter (IIR filter) s Arithmetic units •25 × 24-bit parallel adder • 32-bit accumulator s Overflow limiter built-in Applications s Digital audio equipment PINOUT (TOP VIEW) ORDERING INFOMATION Device Package SM5846AP 28pin DIP LRCI BCKO WCKO DOR BCKI MDS 1 2 3 4 5 6 7 18 19 20 21 22 23 24 DOL VDD2 DIN CKEN XTI XTO VDD1 DITH CKO VSS1 CKS ASEL2/MDCK 8 9 10 11 12 HS/MDT VSS2 ASEL1 TEST2 15 16 17 OBS TEST1 13 14 28 27 26 25 SYNC/MDLE RST DEEM LRS |
类似零件编号 - SM5846AP |
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类似说明 - SM5846AP |
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