SM5876AM 查看數據表（PDF） - Nippon Precision Circuits

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SM5876AM

3rd-order Σ∆, 2-channel D/A Converter

Nippon Precision Circuits  

NIPPON PRECISION CIRCUITS INC.

SM5876AM

3rd-order Σ∆, 2-channel D/A Converter

OVERVIEW

The SM5876AM is a 3rd-order Σ∆, 2-channel D/A

converter LSI for CD-ROM digital audio reproduc-

tion equipment. It incorporates an 8-times oversam-

pling digital filter, deemphasis filter, attenuator, and

soft mute circuits built-in., using NPC’s Molybde-

num-gate CMOS technology.

The SM5876AM operates from a 2.7 to 5.5 V supply,

and is available in 24-pin SSOPs.

FEATURES

s System clock

• 768fs (33.8688MHz)

• 384fs (16.9344MHz)

s Crystal oscillator circuit built-in

s Infinity-zero detector circuit built-in

s MSB first, rear-packed serial data input format

(≤ 64fs bit clock)

s 8-times oversampling digital filter

• 32 dB stopband attenuation

• ±0.05 dB passband ripple

• −0.34 dB passband correction for 70 kHz LPF

s 3-line microcontroller interface for output mode

and attenuator control settings

s 16 output modes

s Deemphasis filter operation

• 36 dB stopband attenuation

• −0.09 to +0.23 dB deviation

• −0.34 dB passband correction for 70 kHz LPF

s Attenuator

• 8-bit attenuator (linear 256 steps)

• Independent left/right-channel set function

• Soft mute function (approx. 1024/fs mute time)

s Σ∆ 2-channel D/A converter

• 3rd-order noise shaper

• 32fs oversampling

s 44.1 kHz sampling frequency

s 2.7 to 5.5 V operating supply voltage range (4.5 to

5.5 V operating supply voltage range with 768fs

system clock)

s 24-pin SSOP

s Molybdenum-gate CMOS process

PINOUT

MLEN 1

CKSL

CKO

DVSS

BCKI

DI

DVDD

LRCI

TSTN

LO

AVDDL

LON 12

24 MCK

MDT

RSTN

MUTEO

XVSS

XTO

XTI

XVDD

RO

AVDDR

RON

13 AVSS

PACKAGE DIMENSIONS

Unit: mm

24-pin SSOP

10.05 0.20

10.20 0.30

0.7

0.8

0.36 0.10

0.15

+

−

00..105

0.50 0.20

0 10

NIPPON PRECISION CIRCUITS—1

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