LM4928 datasheet(1/20 Pages) NSC

부품명	LM4928

상세설명	1.2 Watt Stereo Fully Differential Audio Amplifier with RF Suppression and Shutdown Low

PDF	20 Pages

Scroll/Zoom	100%

제조업체	NSC [National Semiconductor (TI)]

홈페이지	http://www.national.com

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LM4928

1.2 Watt Stereo Fully Differential Audio Amplifier with RF

Suppression and Shutdown Low

General Description

The LM4928 is an stereo fully differential stereo audio power

amplifier primarily designed for demanding applications in

mobile phones and other portable communication devices. It

is capable of delivering 1.2 watts of continuous average

power to a 8

Ω load with less than 1% distortion (THD+N)

from a 5V

DC power supply.

Boomer audio power amplifiers were designed specifically to

provide high quality output power with a minimal amount of

external components. The LM4928 does not require output

coupling capacitors or bootstrap capacitors, and therefore is

ideally suited for mobile phone and other low voltage appli-

cations where minimal power consumption is a primary re-

quirement.

The LM4928 features a low-power consumption shutdown

mode. To facilitate this, shutdown may be enabled by logic

low. Additionally, the LM4928 features an internal thermal

shutdown protection mechanism.

The LM4928 contains advanced pop & click circuitry which

eliminates noises which would otherwise occur during

turn-on and turn-off transitions.

Key Specifications

j Improved PSRR at 217Hz

90dB (typ)

j Output Power at 5.0V @ 1% THD+N (8

Ω) 1.2W (typ)

j Output Power at 3.0V @ 1% THD+N (8

Ω)400mW (typ)

j Shutdown Current

0.1µA (typ)

Features

n

RF Suppression Circuitry

n

Fully differential amplification

n

Available in space-saving micro SMD and LLP packages

n

Ultra low current shutdown mode

n

Can drive capacitive loads up to 100pF

n

Improved pop & click circuitry eliminates noises during

turn-on and turn-off transitions

n

2.4 - 5.5V operation

n

No output coupling capacitors, snubber networks or

bootstrap capacitors required

Applications

n

Mobile phones

n

PDAs

n

Portable electronic devices and accessories

Boomer® is a registered trademark of National Semiconductor Corporation.

February 2006

DS201600

www.national.com

유사한 부품 번호 - LM4928

제조업체	부품명	데이터시트	상세설명
Texas Instruments	LM4928	1Mb / 28P	Audio Power Amplifier Series 1.2 Watt Stereo Fully Differential Audio Amplifier with RF Suppression and Shutdown Low
	LM4928	1Mb / 25P	LM4928 Boomer™ Audio Power Amplifier Series 1.2 Watt Stereo Fully Differential Audio Amplifier with RF Suppression and Shutdown Low REVISED APRIL 2013
	LM4928SD/NOPB	1Mb / 28P	Audio Power Amplifier Series 1.2 Watt Stereo Fully Differential Audio Amplifier with RF Suppression and Shutdown Low
	LM4928SD/NOPB	1Mb / 25P	LM4928 Boomer™ Audio Power Amplifier Series 1.2 Watt Stereo Fully Differential Audio Amplifier with RF Suppression and Shutdown Low REVISED APRIL 2013
	LM4928SD/NOPB.A	1Mb / 25P	LM4928 Boomer™ Audio Power Amplifier Series 1.2 Watt Stereo Fully Differential Audio Amplifier with RF Suppression and Shutdown Low REVISED APRIL 2013

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National Semiconductor ...	LM4894	770Kb / 19P	1 Watt Fully Differential Audio Power Amplifier With Shutdown Select
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	LM4941	714Kb / 13P	1.25 Watt Fully Differential Audio Power Amplifier With RF Suppression and Shutdown
	LM4923	390Kb / 14P	1.1 Watt Fully Differential Audio Power Amplifier With Shutdown Select
Texas Instruments	LM4898	1Mb / 23P	1 Watt Fully Differential Audio Power Amplifier With Shutdown Select
	LM4928	1Mb / 28P	Audio Power Amplifier Series 1.2 Watt Stereo Fully Differential Audio Amplifier with RF Suppression and Shutdown Low
	LM4941	965Kb / 23P	1.25 Watt Fully Differential Audio Power Amplifier With RF Suppression and Shutdown
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LM4928 데이터시트(PDF) 1 Page - National Semiconductor (TI)

LM4928 데이터시트(HTML) 1 Page - National Semiconductor (TI)

유사한 부품 번호 - LM4928

유사한 설명 - LM4928

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