LM4857

Name: LM4857
Brand: TI
SKU: LM4857
Price: 1.212 USD

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Audioverstärker der Klasse AB, 1,2 W, Stereo, Analog-Eingang, mit 3D-Erweiterung & 16 Ausgangsmodi

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Datenblatt

document-pdfAcrobat LM4857 Stereo 1.2W Audio Sub-system with 3D Enhancement datasheet (Rev. I) (Englisch)

LM4857

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Datenblatt

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Produktdetails

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Rating

Catalog

Operating temperature range (°C)

-40 to 85

UQFN (NJD)

28

25 mm² 5 x 5

Stereo Speaker Amplifier
Stereo Headphone Amplifier
Mono Earpiece Amplifier
Mono Line Output for External Handsfree Carkit
Independent Left, Right, and Mono Volume Controls
TI 3D Enhancement
I²C Compatible Interface
Ultra low Shutdown Current
Click and Pop Suppression Circuit
16 distinct Output Modes
Thermal Shutdown Protection
Available in DSBGA and UQFN packages

Key Specifications

POUT, Stereo Loudspeakers, 4Ω, 5V, 1% THD+N (LM4857SP) 1.6W (typ)
POUT, Stereo Loudspeakers, 8Ω, 5V, 1% THD+N 1.2W (typ)
POUT, Stereo Headphones, 32Ω, 5V, 1% THD+N 75mW (typ)
POUT, Mono Earpiece, 32Ω, 5V, 1% THD+N 100mW (typ)
POUT, Stereo Loudspeakers, 8Ω, 3.3V, 1% THD+N 495mW (typ)
POUT, Stereo Headphones, 32Ω, 3.3V, 1% THD+N 33mW (typ)
POUT, Mono Earpiece, 32Ω, 3.3V, 1% THD+N 43mW (typ)
Shutdown Current 0.06μA (typ)

All trademarks are the property of their respective owners.

Stereo Speaker Amplifier
Stereo Headphone Amplifier
Mono Earpiece Amplifier
Mono Line Output for External Handsfree Carkit
Independent Left, Right, and Mono Volume Controls
TI 3D Enhancement
I²C Compatible Interface
Ultra low Shutdown Current
Click and Pop Suppression Circuit
16 distinct Output Modes
Thermal Shutdown Protection
Available in DSBGA and UQFN packages

Key Specifications

POUT, Stereo Loudspeakers, 4Ω, 5V, 1% THD+N (LM4857SP) 1.6W (typ)
POUT, Stereo Loudspeakers, 8Ω, 5V, 1% THD+N 1.2W (typ)
POUT, Stereo Headphones, 32Ω, 5V, 1% THD+N 75mW (typ)
POUT, Mono Earpiece, 32Ω, 5V, 1% THD+N 100mW (typ)
POUT, Stereo Loudspeakers, 8Ω, 3.3V, 1% THD+N 495mW (typ)
POUT, Stereo Headphones, 32Ω, 3.3V, 1% THD+N 33mW (typ)
POUT, Mono Earpiece, 32Ω, 3.3V, 1% THD+N 43mW (typ)
Shutdown Current 0.06μA (typ)

All trademarks are the property of their respective owners.

The LM4857 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 495mW per channel into an 8Ω load, a stereo headphone amplifier delivering 33mW per channel into a 32Ω load, a mono earpiece amplifier delivering 43mW into a 32Ω load, and a line output for an external powered handsfree speaker. It integrates the audio amplifiers, volume control, mixer, power management control, and TI 3D enhancement all into a single package. In addition, the LM4857 routes and mixes the stereo and mono inputs into 16 distinct output modes. The LM4857 is controlled through an I²C compatible interface. Other features include an ultra-low current shutdown mode and thermal shutdown protection.

Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal amount of external components.

The LM4857 is available in a 30-bump DSBGA package and a 28–lead UQFN package.

The LM4857 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 495mW per channel into an 8Ω load, a stereo headphone amplifier delivering 33mW per channel into a 32Ω load, a mono earpiece amplifier delivering 43mW into a 32Ω load, and a line output for an external powered handsfree speaker. It integrates the audio amplifiers, volume control, mixer, power management control, and TI 3D enhancement all into a single package. In addition, the LM4857 routes and mixes the stereo and mono inputs into 16 distinct output modes. The LM4857 is controlled through an I²C compatible interface. Other features include an ultra-low current shutdown mode and thermal shutdown protection.

Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal amount of external components.

The LM4857 is available in a 30-bump DSBGA package and a 28–lead UQFN package.

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	Typ	Titel		Datum
*	Data sheet	LM4857 Stereo 1.2W Audio Sub-system with 3D Enhancement datasheet (Rev. I)		19 Apr 2013

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LM4857

Audioverstärker der Klasse AB, 1,2 W, Stereo, Analog-Eingang, mit 3D-Erweiterung & 16 Ausgangsmodi

LM4857

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Key Specifications

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