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SM5843AP1 参数 Datasheet PDF下载

SM5843AP1图片预览
型号: SM5843AP1
PDF下载: 下载PDF文件 查看货源
内容描述: 音频多功能数字滤波器 [Audio Multi-function Digital Filter]
分类和应用: 外围集成电路光电二极管LTE
文件页数/大小: 24 页 / 263 K
品牌: NPC [ NIPPON PRECISION CIRCUITS INC ]
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SM5843A×1  
Audio Multi-function Digital Filter  
NIPPON PRECISION CIRCUITS INC.  
5 V supply  
OVERVIEW  
Crystal oscillator circuit built-in  
TTL-compatible input/outputs  
28-pin plastic DIP and SOP  
Molybdenum-gate CMOS  
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.  
APPLICATIONS  
CD players  
DAT players  
PCM systems  
FEATURES  
ORDERING INFOMATION  
Filter configuration (2-channel processing)  
• 8-times oversampling (interpolation)  
- 3-stage FIR configuration  
• Deemphasis filter  
- IIR filter configuration for correct gain and  
phase characteristics  
Device  
Package  
28pin DIP  
28pin SOP  
SM5843AP1  
SM5843AS1  
- 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  
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)  
Soft muting  
Digital attenuator  
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  
Output data format  
• 2s complement, MSB first, LR simultaneous  
• 18/20-bit serial  
• BCKO burst (NPC format)  
Dither processing ON/OFF control  
Jitter-free/Sync mode selectable  
256fs/384fs system clock selectable  
• 21.2/14.2MHz  
(384fs/256fs)  
maximum  
frequency  
NIPPON PRECISION CIRCUITS—1