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SM5843AP1 датащи(PDF) 1 Page - Nippon Precision Circuits Inc |
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SM5843AP1 датащи(HTML) 1 Page - Nippon Precision Circuits Inc |
1 / 24 page SM5843A ×1 NIPPON PRECISION CIRCUITS—1 NIPPON PRECISION CIRCUITS INC. Audio Multi-function Digital Filter OVERVIEW The SM5843A ×1 is a multi-function digital filter IC, fabricated using NPC’s Molybdenum-gate CMOS process, for digital audio reproduction equipment. It features 8-times oversampling (interpolation), digital deemphasis and soft muting functions. It accepts 16, 18, or 20-bit input data, and outputs data in 18 or 20- bit format. It operates using either a 384fs or 256fs system clock. FEATURES s Filter configuration (2-channel processing) • 8-times oversampling (interpolation) - 3-stage FIR configuration • Deemphasis filter - IIR filter configuration for correct gain and phase characteristics - 2-channel independent ON/OFF control - 32/44.1/48 kHz sampling frequency (fs) • 21 × 22-bit parallel multiplier/25-bit accumulator for high precision • Overflow limiter s 2 oversampling filter characteristics • Sharp roll-off characteristic (response 1) - ≤ ±0.00005 dB passband ripple (0 to 0.4535fs) - ≥ 110 dB stopband attenuation (0.5465fs to 7.4535fs) • Slow roll-off characteristic (response 2) - ≤ ±0.00003 dB passband ripple (0 to 0.235fs) - ≥ 77 dB stopband attenuation (0.745fs to 7.255fs) s Soft muting s Digital attenuator s Input data format • 2s complement, MSB first - LR alternating, 16/18/20-bit serial, trailing data - LR alternating, 20-bit serial, leading data - LR simultaneous, 20-bit serial, leading data s Output data format • 2s complement, MSB first, LR simultaneous • 18/20-bit serial • BCKO burst (NPC format) s Dither processing ON/OFF control s Jitter-free/Sync mode selectable s 256fs/384fs system clock selectable • 21.2/14.2MHz maximum frequency (384fs/256fs) s 5 V supply s Crystal oscillator circuit built-in s TTL-compatible input/outputs s 28-pin plastic DIP and SOP s Molybdenum-gate CMOS APPLICATIONS s CD players s DAT players s PCM systems ORDERING INFOMATION Device Package SM5843AP1 28pin DIP SM5843AS1 28pin SOP |
Аналогичный номер детали - SM5843AP1 |
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Аналогичное описание - SM5843AP1 |
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