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SM5841H

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
20页	168K
描述
Audio Multi-function Digital Filter

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SM5841H 数据手册

SM5841H

NIPPON PRECISION CIRCUITS INC.

Audio Multi-function Digital Filter

OVERVIEW

ORDERING INFOMATION

The SM5841H is an 8-times oversampling (interpo-

lation) digital ﬁlter for digital audio reproduction

equipment. It accepts 16 or 18-bit input data, and

outputs data in 16, 18 or 20-bit format, making a

wide range of interfaces possible. It also features

digital deemphasis for 3 sampling frequencies, a

noise shaper to reduce quantization noise, a DC off-

set output and other circuits.

Device

Package

18pin DIP

22pin SOP

SM5841HP

SM5841HS

FEATURES

Functions

■ 2-channel processing

■ 8-times (8fs) oversampling (interpolation)

■ Digital deemphasis (fs = 48/44.1/32 kHz)

■ Serial input data

2s complement, MSB ﬁrst, 16/18-bit

■ Serial output data

2s complement, MSB ﬁrst, 16/18/20-bit

■ 1st-order noise shaper (for 16/18-bit output only)

■ 256fs/384fs system clock selectable

■ Output data DC offset (approximately 0.8%)

ON/OFF control

■ TTL-compatible input/outputs

■ 5 V (standard) supply

■ 3.2 V operating voltage

■ Molybdenum-gate CMOS

Filter Characteristics

■ 3-stage DC FIR interpolation ﬁlter

1st stage (fs → 2fs), 69-tap

2nd stage (2fs → 4fs), 13-tap

3rd stage (4fs → 8fs), 9-tap

■ IIR deemphasis ﬁlter for gain and phase character-

istics close to those of analog ﬁlters

■ Overﬂow limiter built-in

APPLICATIONS

■ Digital ampliﬁers

■ CD players

■ DAT players

■ DBS systems

■ PCM systems

NIPPON PRECISION CIRCUITS—1

12 3 4 5 6 7...20

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