2.5w/ch stereo filter-less class-d audio amplifier

features:

zsupply voltage range: 2.5 v to 5.5 v

zsupport single-ended or differential analog input

zlow static operation current

zlow shut-down current

zshort power-on transient time

ztwo volume control modes

dc volume control from -38db to +20db

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

zindependent shut-down control for left or right channel

zshort-circuit and thermal protection

zloudspeaker power within 10% thd+n

1.5w/ch into 8ωloudspeaker

2.5w/ch into 4ωloudspeaker

zloudspeaker efficiency

90% @ 8ω, po,10% thd+n

85% @ 4ω, po,10% thd+n

applications:

zmonitor audio

zpda

zportable multimedia devices

znotebook computer

zmobile phone

description:

the ad52650 is a stereo, filter-less class-d audio amplifier. operating with 5.0v loudspeaker driver

supply, it can deliver 2.5w/ch output power into 4ωloudspeaker within 10% thd+n.

the ad52650 has two volume control modes by setting mode pin. while mode pin is set logic high,

ad52650 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, ad52650 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.

the ad52650 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 ad52650 is more convenient to control the left and right channels.