Datasheet > AUD4886

AUD4886

更新时间： 2022-01-10 13:39:18

品牌	Logo	应用领域
其他 - ETC		音频放大器
页数	文件大小	规格书
13页	399K
描述
2*2W Stereo Audio Amplifier with Shutdown AB类双声道音频IC，和国半的LM4992pin-pin

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AUD4886 数据手册

September 2007

AUD4886

2 x 2W Stereo Audio Amplifier with Shutdown

General Description

Key Specifications

The AUD4886 is a stereo audio power amplifier essentially ꢀ Wide Power Supply

designed for communication purpose such as mobile phone

and other portable devices. It can deliver 1 watt, per channel,

of continuous average power to an 8 Ohm BTL load. There is

less than 1% distortion from a 5V DC power supply.

Voltage Range

2.7V < V_DD< 5.5V

0.2% (typ)

64 dB (typ)

ꢀ

Typical THD at 1W, 8Ω, 1kHz

High PSRR

Low Quiescent Current

2.5 mA per ch (typ)

The AUD4886 were specifically designed to provide high

quality output power with a minimal amount of external

components. It requires no output coupling capacitors, for

this reason, it is perfectly meet the needs of mobile phone

and other low voltage applications where require the

consumption of power in the smallest amount.

Features

ꢀ

Space Saving Thermal Package

Ultra Low Current Shutdown

Mode

ꢀ

External Gain Configuration

Unity-gain stable

Can drive C_Lup to 200pF

The AUD4886 allows shutdown control on each channel, if

both shutdown control pin is being driven to logic low, a low

power consumption shutdown mode will be activated.

Additionally, the AUD4886 features an internal thermal

shutdown protection mechanism.

Applications

ꢀ

Mobile Phones

PDAs

Notebook Computers

Portable electronic devices

The AUD4886 has an advanced pop & click circuitry that

eliminates the noise during turning on and turning off of the

device.

Typical Application

V_DD

C _S

1.0µF

R_F

20kΩ

Audio

R_i

Input

20kΩ

- IN

V_O

1 -

+ IN

C_i

0.39µF

20kΩ

R_L

8Ω

Bypass

V_IH

C _B

1.0µF

V_O

1 +

V_IL

A_V= -1

V_DD/2

ShutDown

Shutdown

Control

Shutdown

Control

V_DD/2

V_O

2 +

A_V= -1

V_IH

V_IL

Bypass

R_L

8Ω

C _B

1.0µF

20kΩ

Audio

Input

+ IN

- IN

R_i

20kΩ

V_O

2 -

0.1

C_i

0.39µF

GND

10^-4

10^-3

10^-2

10^-1

10⁰

R_F

20kΩ

Output Power (W)

Figure 1 Audio Power Amplifier with A_V= 2

Figure 2 THD + N vs Output Power

http://www.analogexpress.com

V1.0

12 3 4 5 6 7...13

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