Texas Instruments LM4674A Filterless 2.5 Stereo Class D Audio Power Amplifier LM4674ATL/NOPB

Description
Filterless 2.5 Stereo Class D Audio Power Amplifier 16-DSBGA -40 to 85
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Description
Filterless 2.5 Stereo Class D Audio Power Amplifier 16-DSBGA -40 to 85
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Datasheet
Datasheet Summary
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The LM4674A is a filterless stereo Class D audio power amplifier capable of delivering 2.5W per channel into a 4,Ѷ load with less than 10% total harmonic distortion plus noise (THD+N). It operates from a single supply voltage ranging from 2.4V to 5.5V, making it suitable for battery-powered applications. The device features a low noise PWM architecture that eliminates the need for an output filter, thereby reducing the external component count and simplifying the design. It includes logic-selectable gain options and independent shutdown controls for each channel, which enhance power savings in mixed mono/stereo applications. The LM4674A also incorporates output short circuit protection and click and pop suppression to minimize audible transients during power-up and shutdown. With a compact 2mm x 2mm x 0.6mm DSBGA package, it is designed for space-constrained applications such as mobile phones, PDAs, and laptops. The amplifier achieves high efficiency, with typical values of 85% at 500mW output into an 8,Ѷ load at 3.6V.

Datasheet Summary
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The LM4674A is a filterless stereo Class D audio power amplifier capable of delivering 2.5W per channel into a 4,Ѷ load with less than 10% total harmonic distortion plus noise (THD+N). It operates from a single supply voltage ranging from 2.4V to 5.5V, making it suitable for battery-powered applications. The device features a low noise PWM architecture that eliminates the need for an output filter, thereby reducing the external component count and simplifying the design. It includes logic-selectable gain options and independent shutdown controls for each channel, which enhance power savings in mixed mono/stereo applications. The LM4674A also incorporates output short circuit protection and click and pop suppression to minimize audible transients during power-up and shutdown. With a compact 2mm x 2mm x 0.6mm DSBGA package, it is designed for space-constrained applications such as mobile phones, PDAs, and laptops. The amplifier achieves high efficiency, with typical values of 85% at 500mW output into an 8,Ѷ load at 3.6V.

Suppliers

Company
Product
Description
Supplier Links
LM4674A Filterless 2.5 Stereo Class D Audio Power Amplifier - LM4674ATL/NOPB - Texas Instruments
Dallas, TX, United States
LM4674A Filterless 2.5 Stereo Class D Audio Power Amplifier
LM4674ATL/NOPB
LM4674A Filterless 2.5 Stereo Class D Audio Power Amplifier LM4674ATL/NOPB
Filterless 2.5 Stereo Class D Audio Power Amplifier 16-DSBGA -40 to 85

Filterless 2.5 Stereo Class D Audio Power Amplifier 16-DSBGA -40 to 85

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Audio Amplifiers - LM4674ATL/NOPBDKR-ND - DigiKey
Thief River Falls, MN, United States
Audio Amplifiers
LM4674ATL/NOPBDKR-ND
Audio Amplifiers LM4674ATL/NOPBDKR-ND
Amplifier IC 2-Channel (Stereo) Class D 16-DSBGA

Amplifier IC 2-Channel (Stereo) Class D 16-DSBGA

Buy Now Datasheet
Audio Amplifiers - LM4674ATL/NOPBCT-ND - DigiKey
Thief River Falls, MN, United States
Audio Amplifiers
LM4674ATL/NOPBCT-ND
Audio Amplifiers LM4674ATL/NOPBCT-ND
Amplifier IC 2-Channel (Stereo) Class D 16-DSBGA

Amplifier IC 2-Channel (Stereo) Class D 16-DSBGA

Buy Now Datasheet
Audio Amplifiers - LM4674ATL/NOPBTR-ND - DigiKey
Thief River Falls, MN, United States
Audio Amplifiers
LM4674ATL/NOPBTR-ND
Audio Amplifiers LM4674ATL/NOPBTR-ND
Amplifier IC 2-Channel (Stereo) Class D 16-DSBGA

Amplifier IC 2-Channel (Stereo) Class D 16-DSBGA

Buy Now Datasheet
Audio Amplifier 742-LM4674ATL/NOPB
Filterless 2.5 Stereo Class D Audio Power Amplifier 16-DSBGA -40 to 85 Product overview: LM4674ATL/NOPB from Texas Instruments is an Audio Amplifier for embedded electronics, industrial equipment, maintenance repair, OEM production, and component sourcing. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include key electrical ratings, package details, and application requirements. Search-friendly keywords include Audio Amplifier, Audio Amplifiers, electronic component, datasheet, replacement part. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 742-LM4674ATL/NOPB can be used for catalog matching and distributor lookup.

Filterless 2.5 Stereo Class D Audio Power Amplifier 16-DSBGA -40 to 85 Product overview: LM4674ATL/NOPB from Texas Instruments is an Audio Amplifier for embedded electronics, industrial equipment, maintenance repair, OEM production, and component sourcing. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include key electrical ratings, package details, and application requirements. Search-friendly keywords include Audio Amplifier, Audio Amplifiers, electronic component, datasheet, replacement part. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 742-LM4674ATL/NOPB can be used for catalog matching and distributor lookup.

Supplier's Site Datasheet
Sheung Wan, Hong Kong
Audio Amplifiers
LM4674ATL/NOPB
Audio Amplifiers LM4674ATL/NOPB
Audio Amplifiers Filterless 2.5 Stereo Class D Audio Power Amplifier 16-DSBGA -40 to 85

Audio Amplifiers Filterless 2.5 Stereo Class D Audio Power Amplifier 16-DSBGA -40 to 85

Buy Now Datasheet
Audio Amplifiers - LM4674ATL/NOPB - Quarktwin Technology Ltd.
Shenzhen, Guangdong, China
Audio Amplifiers
LM4674ATL/NOPB
Audio Amplifiers LM4674ATL/NOPB
Amplifier IC 2-Channel (Stereo) Class D 16-DSBGA

Amplifier IC 2-Channel (Stereo) Class D 16-DSBGA

Buy Now Datasheet
Audio Amplifiers - LM4674ATL/NOPB - Quarktwin Technology Ltd.
Shenzhen, Guangdong, China
Audio Amplifiers
LM4674ATL/NOPB
Audio Amplifiers LM4674ATL/NOPB
Amplifier IC 2-Channel (Stereo) Class D 16-DSBGA

Amplifier IC 2-Channel (Stereo) Class D 16-DSBGA

Buy Now
Futian, China
Integrated Circuits (ICs) - Linear - Amplifiers
LM4674ATL/NOPB
Integrated Circuits (ICs) - Linear - Amplifiers LM4674ATL/NOPB
IC AMP CLASS D STER 2.5W 16DSBGA

IC AMP CLASS D STER 2.5W 16DSBGA

Supplier's Site
Linear - Amplifiers - Audio - LM4674ATL/NOPB - Lingto Electronic Limited
Shenzhen, China
Linear - Amplifiers - Audio
LM4674ATL/NOPB
Linear - Amplifiers - Audio LM4674ATL/NOPB
IC AMP CLASS D STER 2.5W 16DSBGA

IC AMP CLASS D STER 2.5W 16DSBGA

Supplier's Site Datasheet

Technical Specifications

  Texas Instruments DigiKey ERSAELECTRONICS PTE. LTD. VAST STOCK CO., LIMITED Quarktwin Technology Ltd. Shenzhen Shengyu Electronics Technology Limited Lingto Electronic Limited
Product Category Audio Amplifier Chips Audio Amplifier Chips Audio Amplifier Chips Operational Amplifiers Audio Amplifier Chips Operational Amplifiers Audio Amplifier Chips
Product Number LM4674ATL/NOPB LM4674ATL/NOPBDKR-ND 742-LM4674ATL/NOPB LM4674ATL/NOPB LM4674ATL/NOPB LM4674ATL/NOPB LM4674ATL/NOPB
Product Name LM4674A Filterless 2.5 Stereo Class D Audio Power Amplifier Audio Amplifiers Audio Amplifier Audio Amplifiers Audio Amplifiers Integrated Circuits (ICs) - Linear - Amplifiers Linear - Amplifiers - Audio
RoHS Compliant RoHS RoHS RoHS
Supply Voltage (VS) 2.4 to 5.5 volts 2.4 to 5.5 volts 2.4 to 5.5 volts 2.4 to 5.5 volts 5.5 to 2.4 volts
Output Power 1.2 watts 2.5 watts 2.5 watts 2.5 watts
Operating Temperature -40 to 85 C (-40 to 185 F) -40 to 85 C (-40 to 185 F) -40 C (-40 F) -40 to 85 C (-40 to 185 F) -40 to 85 C (-40 to 185 F) -40 to 85 C (-40 to 185 F)
Package Type DSBGA 16-WFBGA, DSBGA Tape and Reel 16-WFBGA, DSBGA 16-WFBGA, DSBGA
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