LM4934 datasheet(1/39 Pages) NSC

номер детали	LM4934

подробное описание детали	3D Audio Sub-System with Stereo Speaker, OCL/SE Stereo Headphone, Earpiece and Mono Line Level Outputs

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производитель	NSC [National Semiconductor (TI)]

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LM4934

3D Audio Sub-System with Stereo Speaker, OCL/SE

Stereo Headphone, Earpiece and Mono Line Level

Outputs

General Description

The LM4934 is an integrated audio sub-system designed for

stereo cell phone applications. Operating on a 3.3V supply, it

combines a stereo speaker amplifier delivering 520mW per

channel into an 8

Ω load, a stereo headphone amplifier de-

livering 36mW per channel into a 32

Ω load, a mono earpiece

amplifier delivering 55mW into a 32

Ω load, and a line output

for an external powered handsfree speaker. It integrates the

audio amplifiers, volume control, mixer, power management

control, and National 3D enhancement all into a single pack-

age. In addition, the LM4934 routes and mixes the stereo

and mono inputs into multiple distinct output modes. The

LM4934 features an I2S serial interface for full range audio

and an I2C/SPI compatible interface for control.

Boomer audio power amplifiers are designed specifically to

provide high quality output power with a minimal amount of

external components.

Key Specifications

j POUT, Stereo BTL, 8

Ω, 3.3V,

1% THD+N

520mW (typ)

j POUT HP, 32

Ω, 3.3V, 1% THD+N

36mW (typ)

j POUT Mono Earpiece, 32

Ω, 3.3V,

1% THD+N

55mW (typ)

j Shutdown current

0.6µA (typ)

j DAC SNR

95dB (typ)

Features

n

18-bit stereo DAC

n

Multiple distinct output modes

n

Stereo speaker amplifier

n

Stereo headphone amplifier

n

Mono earpiece amplifier

n

Mono Line Output for external handsfree carkit

n

Independent Left, Right, headphone and Mono speaker

volume controls

n

National 3D enhancement with programmable effect

level

n

I

2C/SPI (selectable) compatible interface

n

Ultra low shutdown current

n

Click and Pop Suppression circuit

Applications

n

Cell Phones

n

PDAs

Boomer® is a registered trademark of National Semiconductor Corporation.

November 2005

DS201669

www.national.com

Аналогичный номер детали - LM4934

производитель	номер детали	датащи	подробное описание детали
National Semiconductor ...	LM4934	1Mb / 39P	3D Audio Sub-System with Stereo Speaker, OCL/SE Stereo Headphone, Earpiece and Mono Line Level Outputs
National Semiconductor ...	LM4934	1Mb / 39P	3D Audio Sub-System with Stereo Speaker, OCL/SE Stereo Headphone, Earpiece and Mono Line Level Outputs

More results

Аналогичное описание - LM4934

производитель	номер детали	датащи	подробное описание детали
National Semiconductor ...	LM4934	1Mb / 39P	3D Audio Sub-System with Stereo Speaker, OCL/SE Stereo Headphone, Earpiece and Mono Line Level Outputs
Texas Instruments	LM4947	1Mb / 37P	[Old version datasheet] Mono Class D and Stereo Audio Sub-System with OCL Headphone Amplifier and National 3D
National Semiconductor ...	LM49120	721Kb / 28P	Audio Sub-System with Mono Class AB Loudspeaker Amplifier and Stereo OCL/SE Headphone Amplifier
Texas Instruments	LM49120	1Mb / 29P	[Old version datasheet] Audio Sub-System with Mono Class AB Loudspeaker Amplifier and Stereo OCL/SE Headphone Amplifier
National Semiconductor ...	LM49321	1Mb / 42P	Audio Sub-System with Stereo DAC, Mono Class AB Loudspeaker Amplifier, OCL/SE Stereo Headphone Output and RF Suppression
Texas Instruments	LM49321	1Mb / 45P	[Old version datasheet] Audio Sub-System with Stereo DAC, Mono Class AB Loudspeaker Amplifier, OCL/SE Stereo Headphone Output and RF Suppression
Texas Instruments	LM49321	1,022Kb / 45P	[Old version datasheet] LM49321 Audio Sub-System with Stereo DAC, Mono Class AB Loudspeaker Amplifier, OCL/SE Stereo Headphone Output and RF Suppression
National Semiconductor ...	LM4947	1Mb / 32P	Mono Class D and Stereo Audio Subsystem with OCL Headphone Amplifier and National 3D
Texas Instruments	LM4937	1Mb / 41P	[Old version datasheet] Audio Sub-System with OCL Stereo Headphone Output and RF Suppression
National Semiconductor ...	LM4930	994Kb / 35P	Audio Subsystem with Stereo Headphone & Mono Speaker Amplifiers

More results

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