AD82551A

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	182K
描述
Stereo Digital Audio Amplifier with Headphone Driver

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AD82551A 数据手册

ESMT

AD82551A

Stereo Digital Audio Amplifier with Headphone Driver

z CD and DVD

z TV audio

z Internet audio

z USB speaker

z MP3

z Headphone Amplifier

z PDA

z Portable / Handheld

z Mobile phone

z Car audio

Features

z 16/18/20/24-bit input with I²S data format

z PSNR & DR (A-weighting)

Loudspeaker: 98dB (PSNR), 102dB (DR)

Headphone: 87dB (PSNR), 96dB (DR)

z Multiple sampling frequencies (Fs)

8kHz, 12kHz, 16kHz, 22.05kHz, 24kHz

32kHz, 44.1kHz, 48kHz,

64kHz, 88.2kHz and 96kHz

z System clock = 256Fs

z 8Fs switching for loudspeakers and headphones

z Single or dual supply

Single supply: 3.0~3.3V for the whole chip

Dual supply:3.0~5V for loudspeaker drivers

3.0~3.3V for others

Description

This is a stereo digital audio amplifier with high

power efficiency, which leads to longer battery life,

less heat sink requirement, smaller board size and

lower system cost. AD82551A can detect

headphone connection and choose to drive either

stereo loudspeakers or stereo headphones.

Operating with 3.0/3.3/5V loudspeaker driver supply,

each loudspeaker channel can typically deliver

0.8/1.0/2.3W to a 4Ω loudspeaker, respectively, with

less than 1% THD+N. Operating with 3.0/3.3V

headphone driver supply, each headphone channel

can typically deliver 29/35mW to 32Ω, 54/65mW to

16Ω and 94/113mW to 8Ω, respectively, with less

than 1% THD+N.

z Loudspeaker power

2.3W into 4Ω load @ 0dB 1kHz sinewave input

1.3W into 8Ω load @ 0dB 1kHz sinewave input

z Loudspeaker power efficiency (η)

86% for 4Ω @ 0dB 1kHz sinewave input

91% for 8Ω @ 0dB 1kHz sinewave input

z Headphone power

35mW into 32Ω @1kHz and 1% THD+N

65mW into 16Ω @1kHz and 1% THD+N

113mW into 8Ω @1kHz and 1% THD+N

z Volume control

53steps:0~-40dB(1dB/step) -42~-64dB(2dB/step)

z Mute function

z Power down function

ORDERING INFORMATION

z Anti-pop design

z Over-temperature protection

z Under-voltage shutdown

Product Number

AD82551A-CG

Package

Comments

Pb-free

z Short-circuit detection

24L SSOP 209mil

Applications

Functional Block Diagram

Elite Semiconductor Memory Technology Inc.

Publication Date：Apr. 2007

Revision：1.1 1/15

12 3

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