SM6451AV datasheet(1/12 Pages) NPC

Part #	SM6451AV

Description	Audio Variable Volume IC

PDF	12 Pages

Scroll/Zoom	100%

Manufacturer	NPC [Nippon Precision Circuits Inc]

Direct Link	http://www.npc.co.jp/en

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SM6451AV

NIPPON PRECISION CIRCUITS—1

NIPPON PRECISION CIRCUITS INC.

Audio Variable Volume IC

OVERVIEW

The SM6451AV is a 3-wire serial-controlled elec-

tronic variable volume IC for audio applications. It

provides electronic volume control for a stereo sys-

tem (left and right channels), and independent chan-

nel attenuation and muting, with greatly enhanced

digital zip noise suppression. The chip address func-

tion allows up to four SM6451AV devices to be con-

nected and individually controlled over the 3-wire

control interface from a single CPU. It is available in

16-pin VSOP packages.

FEATURES

s

Stereo inputs and outputs

s

Attenuation function

• 2-channel independent control

• 1.0 dB/step over 80 steps

• 0 to

−80 dB range

s

Mute function

s

3-wire serial data control (MDT, MCK, MLEN)

s

Chip addressing (up to 4 devices can be connected

in parallel)

s

Low noise

•

≤ 0.002% THD + noise

• 10 µVrms residual noise

s

5 V single power supply

s

Silicon-gate CMOS process

APPLICATIONS

s

Audio equipment

ORDERING INFORMATION

PINOUT

(Top View)

PACKAGE DIMENSIONS

(Unit: mm)

16 pin VSOP

Device

Package

SM6451AV

16-pin VSOP

1

9

16

8

RSTN

ADRS1

ADRS2

DVDD

LOUT

LIN

AVDD

MDT

MCK

MLEN

DVSS

ROUT

RIN

AVSS

VRL

VRR

5.1 0.2

0.22

+ 0.10

- 0.05

010

0.5 0.2

0.275TYP

0.65

0.10

0.12 M

0.15

+ 0.1

- 0.05

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SM6451AV Datasheet(PDF) 1 Page - Nippon Precision Circuits Inc

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