SM5877AM datasheet(1/16 Pages) NPC

Il numero della parte	SM5877AM

Spiegazioni elettronici	3rd-order , 2-channel D/A Converter

PDF	16 Pages

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Produttore elettronici	NPC [Nippon Precision Circuits Inc]

Homepage	http://www.npc.co.jp/en

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1 / 16 page

SM5877AM

NIPPON PRECISION CIRCUITS—1

NIPPON PRECISION CIRCUITS INC.

3rd-order

Σ∆, 2-channel D/A Converter

OVERVIEW

The SM5877AM is a 3rd-order

Σ∆, 2-channel D/A

converter LSI for digital audio reproduction equip-

ment. It also incorporates an 8-times oversampling

digital ﬁlter and analog, post-converter lowpass ﬁl-

ters.

The SM5877AM has digital deemphasis ﬁlter, atten-

uator, and soft mute circuits built-in. Double-speed

operation and low-voltage operation are also sup-

ported.

The SM5877AM operates from a 2.7 to 5.5 V supply,

and is available in 24-pin SSOPs.

FEATURES

s

2.7 to 5.5 V operating supply voltage range

s

4.5 to 5.5 V operating supply voltage range for

double-speed mode

s

44.1 kHz sampling frequency

s

Normal

(384fs)

and

double-speed

(192fs),

16.9344 MHz system clock

s

16.9344 MHz crystal oscillator circuits built-in

s

16-bit, 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

s

Deemphasis ﬁlter operation

• 36 dB stopband attenuation

•

−0.09 to +0.23 dB deviation from ideal deem-

phasis ﬁlter characteristics

s

Attenuator

• 6-bit attenuator (64 steps)

• Soft mute function when MODE is HIGH

(approx. 1024/fs total muting time)

s

Built-in inﬁnity-zero detector

s

Σ∆ 2-channel D/A converter

• 3rd-order noise shaper

• 32fs oversampling (16fs for double-speed

mode)

s

3rd-order analog, post-converter lowpass ﬁlters

built-in (165 kHz cut-off frequency)

s

24-pin SSOP

s

Molybdenum-gate CMOS process

PINOUT

PACKAGE DIMENSIONS

Unit: mm

24-pin SSOP

Package Marking

1

MUTE

2

DEEM

3

CKO

4

DVSS

5

BCKI

6

DI

7

DVDD

8

LRCI

9

TSTN

10

TO1

11

AVDDL

12

LO

13

AVSS

14

RO

15

AVDDR

16

MUTEO

17

XVDD

18

XTI

19

XTO

20

XVSS

21

DS

22

RSTN

23

MODE

24

ATCK

SM5877AM

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

M

A

7

8

5

M

S

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