Datasheet > SM5843A

SM5843A

更新时间： 2024-09-30 22:50:15

品牌	Logo	应用领域
NPC		/
页数	文件大小	规格书
24页	263K
描述
Audio Multi-function Digital Filter

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数据手册

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SM5843A 数据手册

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

12 3 4 5 6 7...24

中文翻译

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与SM5843A相关器件

型号	品牌	获取价格	描述	数据表
SM5843AP1	NPC	获取价格	Audio Multi-function Digital Filter
SM5843AS1	NPC	获取价格	Audio Multi-function Digital Filter
SM5844	NPC	获取价格	Asynchronous Sample Rate Converter
SM5844AF	NPC	获取价格	Asynchronous Sample Rate Converter
SM5846AP	NPC	获取价格	Multi-function Digital Filter
SM5846AP_06	NPC	获取价格	Multi-function Digital Filter
SM5847	NPC	获取价格	High-fidelity Digital Audio, Multi-function Digital Filter
SM5847AF	NPC	获取价格	High-fidelity Digital Audio, Multi-function Digital Filter
SM5849	NPC	获取价格	Asynchronous Sample Rate Converter
SM5849AF	NPC	获取价格	Asynchronous Sample Rate Converter