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SM5849 PDF预览

SM5849

更新时间: 2024-02-01 03:06:20
品牌 Logo 应用领域
NPC 转换器
页数 文件大小 规格书
26页 351K
描述
Asynchronous Sample Rate Converter

SM5849 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:QFP, QFP80,.55SQ,20Reach Compliance Code:unknown
风险等级:5.92商用集成电路类型:CONSUMER CIRCUIT
JESD-30 代码:S-PQFP-G80JESD-609代码:e0
端子数量:80最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:QFP封装等效代码:QFP80,.55SQ,20
封装形状:SQUARE封装形式:FLATPACK
电源:3.3 V认证状态:Not Qualified
子类别:Other Consumer ICs表面贴装:YES
技术:CMOS温度等级:INDUSTRIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:0.5 mm端子位置:QUAD

SM5849 数据手册

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SM5849AF  
Asynchronous Sample Rate Converter  
NIPPON PRECISION CIRCUITS INC.  
OVERVIEW  
The SM5849AF is a digital audio signal, asynchronous sample rate converter LSI. It supports 16/20/24-bit  
word length input data, 16/20/24-bit word length output data, 2kHz to 100kHz input sample rate range, and  
4kHz to 200kHz output sample rate range. It also features a built-in digital deemphasis filter and digital attenu-  
ator.  
FEATURES  
Functions  
Filter Characteristics and Converter Efficiency  
Left/right-channel processing (stereo)  
2 to 100kHz input sample rate range (fsi)  
4 to 200kHz output sample rate range (fso)  
0.45 to 2.2-times variable sample rate conversion  
ratio (fso/fsi)  
Asynchronous input and output timing (clock  
inputs)  
System clock inputs (input and output clocks inde-  
pendent)  
24-bit internal data word length  
Deemphasis filter characteristics (IIR filter)  
• ±0.03dB gain deviation from ideal filter charac-  
teristics  
Anti-aliasing LPF characteristics  
• Output/input sample rate conversion ratio auto-  
matic filter select (6 FIR filters)  
- Up converter LPF  
1.0 to 2.2 times  
• 256fsi or 384fsi input system clock select  
• 256fso or 384fso output system clock select  
Deemphasis filter  
- Down converter LPF I  
0.92 times: 48.0 to 44.1kHz  
- Down converter LPF II  
• IIR-type filter  
• 44.1, 48 or 32kHz  
0.73 times: 44.1 to 32.0kHz  
- Down converter LPF III  
Digital attenuator  
• 11-bit data, 1025 levels  
0.67 times: 48.0 to 32.0kHz  
- Down converter LPF IV  
• Smooth attenuation change  
• +12dB gain shift function  
Direct mute function  
0.5 times: 48.0 to 24.0kHz  
- Down converter LPF V  
0.45 times: 48.0 to 22.1kHz  
• ±0.00005dB passband ripple  
• > 110dB stopband attenuation  
Converter noise levels  
≤ −110dB internal calculation (quantization)  
noise  
98dB (16-bit output), 122dB (20-bit output),  
and 146dB (24-bit output) word rounding  
noise  
Through mode operation  
• Direct connection from input to output  
Output data clocks (LRCO, BCKO)  
• Slave mode: external input  
• Master mode: output system clock generated  
internally  
Dither round-off processing  
• Dither round-off ON/OFF selectable  
3.3V single supply  
Output S/N ratio (theoretical values)  
80-pin QFP  
Silicon-gate CMOS process  
S/N ratio  
Output s ignal  
16-bit input  
word length  
20-bit input  
word length  
24-bit input  
word length  
word length  
16 bits  
20 bits  
24 bits  
94.8dB  
97.7dB  
97.7dB  
97.7dB  
109.5dB  
109.7dB  
97.7dB  
109.7dB  
110dB  
NIPPON PRECISION CIRCUITS—1  

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