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參數(shù)資料
| 型號(hào)： | SM5842AP |
| 廠商： | Seiko NPC Corporation |
| 英文描述： | High-Class Audio Multi-function Digital Filter |
| 中文描述： | 高級(jí)音頻多功能數(shù)字濾波器 |
| 文件頁數(shù)： | 1/23頁 |
| 文件大小： | 201K |
| 代理商： | SM5842AP |
SM5842AP/APT
NIPPON PRECISION CIRCUITS—1
NIPPON PRECISION CIRCUITS INC.
High-Class Audio Multi-function Digital Filter
OVERVIEW
The SM5842AP/APT is a multi-function digital filter
IC, fabricated using NPC’s Molybdenum-gate
CMOS process, for digital audio reproduction equip-
ment. It features 8-times oversampling (interpola-
tion), independent left and right-channel digital
deemphasis, and soft muting functions. It accepts 16,
18, 20 or 24-bit input data, and outputs data in 18,
20, 22 or 24-bit format. It operates using either a
384fs or 256fs system clock at sampling frequencies
up to 48 kHz + 10% (384fs SM5842AP, 384/256fs
SM5842APT).
FEATURES
Functions
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L/R 2-channel processing
8-times oversampling (interpolation)
≤
±0.00002 dB passband ripple
≥
117 dB stopband attenuation
Digital deemphasis
32/44.1/48 kHz sampling frequency (fs)
2-channel independent ON/OFF control
Soft muting
2-channel independent ON/OFF control
Input data format
2s complement, MSB first
- LR alternating, 16/18/20/24-bit serial, trail-
ing data
- LR alternating, 24-bit serial, leading data
- LR simultaneous, 24-bit serial, leading data
Output data format
2s complement, MSB first, LR simultaneous
18/20/22/24-bit serial
BCKO burst (NPC format)
Dither round-up processing
ON (dither rounding)/OFF (normal rounding)
control
25-bit internal data length
Jitter-free function for correct operation in the
presence of jitter between the system clock and
LRCI clock
ON (jitter-free mode)/OFF (sync mode) control
256fs/384fs system clock selectable
384fs
- 21.2 MHz maximum frequency (at maximum
fs = 55.2 kHz)
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256fs
- 13 MHz maximum frequency (at maximum
fs = 50.7 kHz, SM5842AP)
- 14.2 MHz maximum frequency (at maximum
fs = 55.2 kHz, SM5842APT)
Crystal oscillator circuit built-in
TTL-compatible input/outputs
5.0 ± 0.25 V supply
Molybdenum-gate CMOS process
28-pin plastic DIP
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Filter Configuration
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Linear phase 3-stage FIR interpolation filter
169-tap 1st stage (fs to 2fs)
29-tap 2nd stage (2fs to 4fs)
17-tap 3rd stage (4fs to 8fs)
Deemphasis filter
- IIR filter configuration for accurate gain and
phase characteristics
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×
24-bit parallel multiplier/32-bit accumulator
for high precision
Overflow limiter built-in
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APPLICATIONS
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CD players
DAT players
PCM systems
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PINOUT
MUTEL
INF1N
IW2N / DIR
BCKI
DI / INF2N
LRCI
XTI
DOL
XTO
BCKO
1
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14
CKSLN
VSS
RSTN
CKO
OW1N
OW2N
SYNCN
WCKO
DOR
IW1N / DIL
VDD
DITHN
DG
MUTER
FSEL2
FSEL1
DEMPL
DEMPR
S
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SM5842APT | High-Class Audio Multi-function Digital Filter |
| SM5844 | Asynchronous Sample Rate Converter |
| SM5844AF | Asynchronous Sample Rate Converter |
| SM5847 | High-fidelity Digital Audio, Multi-function Digital Filter |
| SM5847AF | High-fidelity Digital Audio, Multi-function Digital Filter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| SM5843AP1 | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Audio Multi-function Digital Filter |
| SM5843AS1 | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Audio Multi-function Digital Filter |
| SM5844 | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Asynchronous Sample Rate Converter |
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