Datasheet > LA4581M

LA4581M

更新时间： 2024-10-28 23:44:47

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描述
Preamplifier + Power Amplifier for 3V Headphone Stereos(215.50 k)

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LA4581M 数据手册

Ordering number: EN3535A

Monolithic Linear IC

LA4581MB

Preamplifier + Power Amplifier

for 3V Headphone Stereos

Overview

Package Dimensions

unit : mm

The LA4581MB is an auto reverse-supported preamplifier +

power amplifier IC that is intended for use in 3V headphone

stereos.

3112-MFP24S

[LA4581MB]

Features

Preamplifier muting and preamplifier output on/off can be

implemented with one pin. This IC can easily be used to

construct a set with a radio.

The power amplifier needs no input/output coupling

capacitor.

A high-frequency cut capacitor is connected to the

preamplifier input pin and the power amplifier input pin.

(Anti-buzz provision)

Because V_refAMP (r₀= 10 Ω) is built in, the virtual

grounding impedance is about 10 Ω. This eliminates the

SANYO : MFP24S

need for a large capacitor.

8 Ω speaker drivable.

Specifications

Maximum Ratings at Ta = 25 C

Parameter

Symbol

max

Conditions

Ratings

Unit

Maximum supply voltage

Allowable power dissipation

Operating temperature

Storage temperature

4.5

Pd max

Topr

530

–20 to +75

–40 to +125

Tstg

Operating Conditions at Ta = 25 C

Parameter

Symbol

Conditions

Ratings

3.0

Unit

Recommended supply voltage

Operating supply voltage range

1.8 to 3.6

Operating Characteristics at Ta = 25 C, V = 3.0 V, f = 1 kHz, 0.775 V = 0 dBm,

R_L= 10 kΩ (preamplifier), R_L= 16 Ω (power amplifier)

Parameter

[Pre + Power]

Symbol

Output

min

typ

max

Unit

Quiescent current

Rg = 2.2 kΩ (preamplifer) V = 0 V

CCO

Voltage gain (Closed)

= –5 dBm

Continued on next page.

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

22896HA(II) No.3535-1/8

12 3 4 5 6 7 8

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