SM5876AM datasheet(1/17 Pages) NPC

No de pièce	SM5876AM

Description	3rd-order, 2-channel D/A Converter

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Fabricant	NPC [Nippon Precision Circuits Inc]

Site Internet	http://www.npc.co.jp/en

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SM5876AM

NIPPON PRECISION CIRCUITS—1

NIPPON PRECISION CIRCUITS INC.

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

PACKAGE DIMENSIONS

Unit: mm

24-pin SSOP

MLEN

CKSL

CKO

DVSS

BCKI

DI

DVDD

MCK

MDT

RSTN

MUTEO

XVSS

XTO

XTI

LRCI

XVDD

TSTN

LO

AVDDL

RO

AVDDR

RON

LON

AVSS

1

12

13

24

0.7

0.8

0.36 0.10

10.20 0.30

10.05 0.20

0.15

+ 0.1

− 0.05

010

0.50 0.20

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