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发布者:微桥 发布时间:2011-11-17 阅读:7186次    关键字: 音频功放
AD5265A-2.5W Stereo Filter-less Class-D音频功放


AD5265A-2.5W/CH Stereo Filter-less Class-D Audio Amplifier with Headphone Driver DataSheet 
 
Features
􀁺 Supply voltage range: 2.5 V to 5.5 V
􀁺 Support single-ended or differential analog input
􀁺 Low static operation current
􀁺 Low shut-down current
􀁺 Short power-on transient time
􀁺 Two volume control modes
􀂄 DC volume control from -38dB to +20dB
􀂄 4-step volume gain of +6, +12, +18, +24dB
􀁺 Independent shut-down control for left or right channel
􀁺 Short-circuit and thermal protection
􀁺 Loudspeaker power within 10% THD+N
􀂄 1.5W/ch into 8Ω loudspeaker
􀂄 2.5W/ch into 4Ω loudspeaker
􀁺 Loudspeaker efficiency
􀂄 90% @ 8Ω, Po,10% THD+N
􀂄 85% @ 4Ω, Po,10% THD+N
􀁺 Headphone power within 1% THD+N
􀂄 120mW/ch into 16Ω headphone
Applications
􀁺 Monitor audio
􀁺 PDA
􀁺 Portable multimedia devices
􀁺 Notebook computer
􀁺 Mobile phone
Description
    The AD5265A 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.
    The AD5265A has two volume control modes by setting MODE pin. While MODE pin is set logic high,AD5265A 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, AD5265A 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. Not only the stereo class-D amplifier, AD5265A also has a fixed
gain (-1V/V) stereo class-AB headphone driver.
    The AD5265A packaged as E-TSSOP 24L is a stereo audio amplifier with high efficiency, which leads to longer battery life, less heat sink requirement, smaller board size and lower system cost, and suitable for the notebook computer, and
portable multimedia devices. With the independent shut-down control for left or right channel, the AD5265A is more convenient to control the left and
right channels.
 

Audio Power Amplifier > Class D Analog Class-D Amplifier

Part Number

Description

Output Power(W)

Typical THD+N(%)

PSRR(dB)

Vdd range

Shutdown current (uA)

Earphone

Package

EMA2011

 2.7W Mono Filter-less

 2.7(4ohm, 5V, 10%THD+N)

 0.24(2.0W, 4ohm, 1KHz)

 -60

 2.5~5.5

 <1

 N/A

 MSOP8, TDFN-8, WLCSP-9

AD5165A

 2.5W Mono, filter-less

 2.6(4ohm, 5V, 10%THD+N)

 0.17(1.8W, 4ohm, 1KHz)

 -65

 2.5~5.5

 <1

 N/A

 DFN-8, WLCSP-9

AD5265A

 2.5W Stereo

 2.5(4ohm, 5V, 10%THD+N)

 0.12(1.8W, 4ohm, 1KHz)

 -65

 2.5~5.5

 0.1

 Stereo

 E-TSSOP-24

AD52660A

 10Wx2/20Wx1; Stereo/Mono

 15(8ohm, 15V, 10%THD+N)

 0.07(7.5W, 8ohm, 1KHz)

 -65

 8~15; Integrated regulator(5V)

 <10

 N/A

 E-LQFP-48

AD52582A

 18Wx2 Stereo

 18(4ohm, 24V, 10%THD+N)

 0.05(10W, 24V, 4ohm, 1KHz)

 -48

 3.15~3.6

 <50

 N/A

 E-TSSOP-24

EMA2016

 2.5Wx2 Stereo

 2.5(4ohm, 5V, 10%THD+N)

 0.18(1.8W, 4ohm, 1KHz)

 -55

 2.8~5.5

 <1

 N/A

 SOP-16

AD52650

 2.5W Stereo

 2.5(4ohm, 5V, 10%THD+N)

 0.12(1.8W, 4ohm, 1KHz)

 -65

 2.5-5.5

 0.1

 N/A

 E-TSSOP-24

AD52651

 3W Stereo

 3(4ohm, 5V, 10%THD+N)

 0.2(2W, 4ohm, 1kHz)

 -55

 3~5

 <1

 N/A

 SSOP-24

AD52655

 2.5W Stereo with power limit

 2.45(4ohm, 5V, 1%THD+N)

 0.2(2W, 4ohm, 1KHz)

 -55

 3~5

 <1

 N/A

 SSOP-24

AD52583

 18W Stereo Class-D Audio Amplifier with power limit

 18W/Ch into 4ohm @ 10% THD+N

 14W/Ch into 4ohm @ 1% THD+N

 -66dB

 10~26

 10

 NO

 E-TSSOP-24

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