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LA4571MB

Low-voltage Headphone Amplifier for Stereo Audio

SANYO -> Panasonic 

Ordering number:ENN3534

Monolithic Linear IC

LA4571MB

Low-voltage Headphone Amplifier

for Stereo Audio

Overview

The LA4571MB is a low-voltage, stereo headphone am-

plifier incorporating both tape head preamplifiers and head-

phone power amplifiers in a single chip, making it ideal for

portable battery-powered equipment. It features logic-level

controlled output signal muting, excellent noise character-

istics and easy interconnection with signal sources, such as

an AM/FM tuner IC.

The LA4571MB requires no input or output coupling ca-

pacitors. A buffer amplifier with 10Ω output impedance

reduces the size of the virtual-earth decoupling capacitor.

The preamplifier and power amplifier inputs only require

the addition of an external capacitor to provide high-fre-

quency noise filtering.

The LA4571MB operates from a 3V supply and is avail-

able in 20-pin MFPs.

Features

• Stereo tape head preamplifiers and headphone power

amplifiers on chip.

• Output signal muting.

• Low noise.

• 8Ω speaker driver.

• 3V supply.

• 20-pin MFP.

Package Dimensions

unit:mm

3036B-MFP20

[LA4571MB]

20

11

1

10

12.6

0.15

0.35

1.27 0.59

SANYO : MFP20

Specifications

Maximum Ratings at Ta = 25˚C

Parameter

Supply voltage

Allowable power dissipation

Operating temperature

Storage temperature

Symbol

VCC max

Pd max

Topr

Tstg

Recommended Operating Conditions at Ta = 25˚C

Parameter

Supply voltage

Supply voltage range

Symbol

VCC

VCC op

Conditions

Conditions

Ratings

Unit

4.5 V

400 mW

–20 to +75 ˚C

–40 to +125 ˚C

Ratings

Unit

3.0 V

1.8 to 3.6 V

Any and all SANYO products described or contained herein do not have specifications that can handle

applications that require extremely high levels of reliability, such as life-support systems, aircraft’s

control systems, or other applications whose failure can be reasonably expected to result in serious

physical and/or material damage. Consult with your SANYO representative nearest you before using

any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other

parameters) listed in products specifications of any and all SANYO products described or contained

herein.

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

40500TN (KT)/3271TS (US) No.3534–1/9

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