Datasheet > AD52651A

AD52651A

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
晶豪 - ESMT		驱动器音频放大器
页数	文件大小	规格书
3页	171K
描述
2.5W/CH Stereo Filter-less Class-D Audio Amplifier with Headphone Driver

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AD52651A 数据手册

ESMT

Preliminary

AD52651A

2.5W/CH Stereo Filter-less Class-D Audio Amplifier with

Headphone Driver

Features

Description

z Supply voltage range: 2.5 V to 5.5 V

z Support single-ended or differential analog input

z Low static operation current

z Low shut-down current

z Short power-on transient time

z Two volume control modes

The AD52651A is a stereo, filter-less class-D

audio amplifier with headphone driver. Operating

with 5.0V loudspeaker driver supply, it can deliver

2.5W/CH output power into 4 Ω loudspeaker within

10% THD+N and 120mW/CH output power into 16Ω

headphone within 1% THD+N.

DC volume control from -38dB to +20dB

4-step volume gain of +6, +12, +18, +24dB

z Independent power-down control for left or right

channel

z Overload and thermal protection

z Loudspeaker power within 10% THD+N

1.5W/ch into 8Ω loudspeaker

2.5W/ch into 4Ω loudspeaker

z Loudspeaker efficiency

The AD52651A has two volume control modes by

setting MODE pin. While MODE pin is set logic high,

AD52651A is in DC volume control mode with

31-step volume gain from -38 dB to +20dB, adjusted

by the DC voltage applied on G0 pin. Otherwise,

AD52651A is the 4-step volume gain mode with

+6dB, +12dB, +18dB, and +24dB gain, selected by

setting G0 and G1 pins. The two volume adjustment

modes are designed to fit the different volume

control requirements in various applications. Beside

stereo class-D amplifier, AD52651 has built-in an

inverted stereo class-AB headphone driver. With the

independent power-down control for left or right

channel, the AD52651 is more convenient to control

the left and right channels.

89% @ 8Ω, P_{o,10% THD+N}

84% @ 4Ω, P_{o,10% THD+N}

z Headphone power within 1% THD+N

120mW/ch into 16Ω headphone

Applications

z Monitor audio

z PDA

z Portable multimedia devices

z Notebook computer

z Mobile phone

The AD52651A packaged as E-TSSOP 24L is a

stereo audio amplifier with high efficiency, which

leads to longer battery left, less heat sink

requirement, smaller board size and lower system

cost, and suitable for the notebook computer, and

portable multimedia devices.

Functional Block Diagram

Elite Semiconductor Memory Technology Inc.

Publication Date: Sep. 2007

Revision: 0.1

1/20

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