- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄378697 > SM5841HP (Seiko NPC Corporation) Audio Multi-function Digital Filter PDF資料下載
參數(shù)資料
| 型號(hào)： | SM5841HP |
| 廠商： | Seiko NPC Corporation |
| 英文描述： | Audio Multi-function Digital Filter |
| 中文描述： | 音頻多功能數(shù)字濾波器 |
| 文件頁(yè)數(shù)： | 11/20頁(yè) |
| 文件大小： | 167K |
| 代理商： | SM5841HP |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)當(dāng)前第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)
SM5841H
NIPPON PRECISION CIRCUITS—11
FUNCTIONAL DESCRIPTION
The basic arithmetic block is shown in figure 1, and
the function of each block is described in the follow-
ing sections.
8-times Oversampling (Interpolation)
The interpolation arithmetic block is comprised of 3
cascaded, 2-times FIR interpolation filters, as shown
in figure 1.
The input signal is sampled at rate fs, and then 8-
times oversampling data is output. Sampling noise in
the 0.5465fs to 7.4535fs stopband is removed by the
interpolation filter.
Digital Deemphasis (DSF1, DSF2)
The digital deemphasis filter has the same construc-
tion as analog filters. It is implemented as an IIR fil-
ter to faithfully reproduce the gain and phase
characteristics of standard analog deemphasis filters.
The filter coefficients for fs = 32.0/44.1/48.0 kHz
sampling frequency are selected by DSF1 and DSF2
when the sampling frequency is specified, as shown
in the following table.
Figure 1. Arithmetic block diagram
Input
fs
13th - order
2
×
interpolator
2fs
4fs
69th - order
2
×
interpolator
8fs
fs
fs
fs
9th - order
2
×
interpolator
Attenuator
Deemphasis IIR filter
1st FIR
3rd FIR
2nd FIR
Output
DSF1
DSF2
Deemphasis
Sampling frequency
LOW
LOW
On
44.1 kHz
LOW
HIGH
On
48.0 kHz
HIGH
LOW
Off
–
HIGH
HIGH
On
32.0 kHz
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SM5841HS | Audio Multi-function Digital Filter |
| SM5842 | High-Class Audio Multi-function Digital Filter |
| SM5842AP | High-Class Audio Multi-function Digital Filter |
| SM5842APT | High-Class Audio Multi-function Digital Filter |
| SM5844 | Asynchronous Sample Rate Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SM5841HS | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Audio Multi-function Digital Filter |
| SM5842 | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:High-Class Audio Multi-function Digital Filter |
| SM5842AP | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:High-Class Audio Multi-function Digital Filter |
| SM5842APT | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:High-Class Audio Multi-function Digital Filter |
| SM5843A | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Audio Multi-function Digital Filter |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。